./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:55:19,653 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:55:19,716 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:55:19,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:55:19,723 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:55:19,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:55:19,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:55:19,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:55:19,742 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:55:19,742 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:55:19,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:55:19,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:55:19,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:55:19,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:55:19,743 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:55:19,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:55:19,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:55:19,744 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:55:19,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:55:19,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:55:19,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:55:19,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:55:19,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:55:19,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:55:19,745 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:55:19,745 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:55:19,745 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:55:19,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:55:19,745 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:55:19,745 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:55:19,745 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:55:19,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:55:19,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:55:19,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:55:19,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:55:19,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:55:19,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:55:19,746 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:55:19,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:55:19,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:55:19,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:55:19,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:55:19,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:55:19,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:55:19,747 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:55:19,747 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 -> dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 [2025-02-06 18:55:20,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:55:20,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:55:20,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:55:20,019 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:55:20,020 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:55:20,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-02-06 18:55:21,230 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f92094313/779c76b3de154d23a1322586ee06b574/FLAGbf19324fe [2025-02-06 18:55:21,548 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:55:21,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-02-06 18:55:21,555 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f92094313/779c76b3de154d23a1322586ee06b574/FLAGbf19324fe [2025-02-06 18:55:21,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f92094313/779c76b3de154d23a1322586ee06b574 [2025-02-06 18:55:21,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:55:21,830 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:55:21,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:55:21,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:55:21,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:55:21,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:55:21" (1/1) ... [2025-02-06 18:55:21,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d0a3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:21, skipping insertion in model container [2025-02-06 18:55:21,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:55:21" (1/1) ... [2025-02-06 18:55:21,847 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:55:21,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:55:21,994 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:55:22,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:55:22,018 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:55:22,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22 WrapperNode [2025-02-06 18:55:22,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:55:22,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:55:22,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:55:22,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:55:22,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (1/1) ... [2025-02-06 18:55:22,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (1/1) ... [2025-02-06 18:55:22,043 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2025-02-06 18:55:22,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:55:22,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:55:22,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:55:22,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:55:22,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (1/1) ... [2025-02-06 18:55:22,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (1/1) ... [2025-02-06 18:55:22,050 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (1/1) ... [2025-02-06 18:55:22,058 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 18:55:22,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (1/1) ... [2025-02-06 18:55:22,063 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (1/1) ... [2025-02-06 18:55:22,065 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (1/1) ... [2025-02-06 18:55:22,066 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (1/1) ... [2025-02-06 18:55:22,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (1/1) ... [2025-02-06 18:55:22,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (1/1) ... [2025-02-06 18:55:22,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:55:22,069 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:55:22,069 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:55:22,069 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:55:22,070 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (1/1) ... [2025-02-06 18:55:22,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:55:22,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:22,092 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 18:55:22,095 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 18:55:22,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:55:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:55:22,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:55:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:55:22,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:55:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:55:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:55:22,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:55:22,115 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 18:55:22,176 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:55:22,179 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:55:22,370 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:55:22,371 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:55:22,491 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:55:22,495 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:55:22,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:55:22 BoogieIcfgContainer [2025-02-06 18:55:22,495 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:55:22,497 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:55:22,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:55:22,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:55:22,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:55:21" (1/3) ... [2025-02-06 18:55:22,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ce1e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:55:22, skipping insertion in model container [2025-02-06 18:55:22,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:55:22" (2/3) ... [2025-02-06 18:55:22,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ce1e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:55:22, skipping insertion in model container [2025-02-06 18:55:22,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:55:22" (3/3) ... [2025-02-06 18:55:22,504 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2025-02-06 18:55:22,517 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:55:22,520 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy11.wvr.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-02-06 18:55:22,520 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:55:22,577 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:55:22,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2025-02-06 18:55:22,636 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-02-06 18:55:22,639 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:55:22,641 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 8. Compared 80 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-06 18:55:22,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2025-02-06 18:55:22,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2025-02-06 18:55:22,651 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:55:22,666 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;@128d512c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:55:22,666 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-06 18:55:22,676 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:55:22,677 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-06 18:55:22,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:55:22,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:22,677 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:55:22,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:22,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash 210847816, now seen corresponding path program 1 times [2025-02-06 18:55:22,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:22,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47037090] [2025-02-06 18:55:22,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:22,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:22,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:55:22,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:55:22,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:22,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:22,857 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 18:55:22,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:22,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47037090] [2025-02-06 18:55:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47037090] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:22,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:22,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:55:22,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761674828] [2025-02-06 18:55:22,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:22,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:55:22,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:22,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:55:22,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:55:22,891 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:55:22,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 18:55:22,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:22,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:55:22,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:23,069 INFO L124 PetriNetUnfolderBase]: 173/330 cut-off events. [2025-02-06 18:55:23,069 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-02-06 18:55:23,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 330 events. 173/330 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1462 event pairs, 42 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 609. Up to 151 conditions per place. [2025-02-06 18:55:23,074 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 38 selfloop transitions, 5 changer transitions 2/52 dead transitions. [2025-02-06 18:55:23,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 209 flow [2025-02-06 18:55:23,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:55:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:55:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-02-06 18:55:23,084 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.640625 [2025-02-06 18:55:23,085 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 4 states and 82 transitions. [2025-02-06 18:55:23,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 209 flow [2025-02-06 18:55:23,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 202 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:55:23,091 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 84 flow [2025-02-06 18:55:23,093 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2025-02-06 18:55:23,098 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-02-06 18:55:23,098 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 84 flow [2025-02-06 18:55:23,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 18:55:23,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:23,099 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:55:23,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:55:23,100 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:23,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:23,102 INFO L85 PathProgramCache]: Analyzing trace with hash 210847817, now seen corresponding path program 1 times [2025-02-06 18:55:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:23,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940620763] [2025-02-06 18:55:23,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:23,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:23,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:55:23,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:55:23,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:23,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:23,204 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 18:55:23,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:23,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940620763] [2025-02-06 18:55:23,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940620763] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:23,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:23,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:55:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070486200] [2025-02-06 18:55:23,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:23,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:55:23,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:23,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:55:23,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:55:23,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2025-02-06 18:55:23,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 18:55:23,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:23,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2025-02-06 18:55:23,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:23,360 INFO L124 PetriNetUnfolderBase]: 173/349 cut-off events. [2025-02-06 18:55:23,360 INFO L125 PetriNetUnfolderBase]: For 39/48 co-relation queries the response was YES. [2025-02-06 18:55:23,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 349 events. 173/349 cut-off events. For 39/48 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1646 event pairs, 34 based on Foata normal form. 21/339 useless extension candidates. Maximal degree in co-relation 514. Up to 139 conditions per place. [2025-02-06 18:55:23,364 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2025-02-06 18:55:23,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 235 flow [2025-02-06 18:55:23,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:55:23,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:55:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2025-02-06 18:55:23,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65625 [2025-02-06 18:55:23,369 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 84 flow. Second operand 4 states and 84 transitions. [2025-02-06 18:55:23,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 235 flow [2025-02-06 18:55:23,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:55:23,373 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 139 flow [2025-02-06 18:55:23,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2025-02-06 18:55:23,374 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2025-02-06 18:55:23,374 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 139 flow [2025-02-06 18:55:23,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 18:55:23,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:23,375 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:55:23,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:55:23,375 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:23,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:23,376 INFO L85 PathProgramCache]: Analyzing trace with hash 210847851, now seen corresponding path program 1 times [2025-02-06 18:55:23,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:23,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534316471] [2025-02-06 18:55:23,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:23,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:23,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:55:23,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:55:23,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:23,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:23,435 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 18:55:23,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534316471] [2025-02-06 18:55:23,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534316471] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:23,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:23,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:55:23,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672777744] [2025-02-06 18:55:23,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:23,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:23,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:23,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:23,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:55:23,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-06 18:55:23,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:55:23,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:23,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-06 18:55:23,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:23,600 INFO L124 PetriNetUnfolderBase]: 232/410 cut-off events. [2025-02-06 18:55:23,600 INFO L125 PetriNetUnfolderBase]: For 210/214 co-relation queries the response was YES. [2025-02-06 18:55:23,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 410 events. 232/410 cut-off events. For 210/214 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1854 event pairs, 36 based on Foata normal form. 20/407 useless extension candidates. Maximal degree in co-relation 958. Up to 271 conditions per place. [2025-02-06 18:55:23,604 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 43 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2025-02-06 18:55:23,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 291 flow [2025-02-06 18:55:23,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:55:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:55:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2025-02-06 18:55:23,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4875 [2025-02-06 18:55:23,606 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 139 flow. Second operand 5 states and 78 transitions. [2025-02-06 18:55:23,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 291 flow [2025-02-06 18:55:23,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:55:23,609 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 144 flow [2025-02-06 18:55:23,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2025-02-06 18:55:23,610 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2025-02-06 18:55:23,610 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 144 flow [2025-02-06 18:55:23,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:55:23,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:23,611 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:55:23,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:55:23,611 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:23,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:23,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2053651036, now seen corresponding path program 1 times [2025-02-06 18:55:23,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:23,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026914095] [2025-02-06 18:55:23,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:23,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:23,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:55:23,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:55:23,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:23,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:23,676 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 18:55:23,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:23,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026914095] [2025-02-06 18:55:23,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026914095] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:23,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:23,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:55:23,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990761867] [2025-02-06 18:55:23,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:23,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:55:23,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:23,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:55:23,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:55:23,683 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:23,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 18:55:23,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:23,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:23,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:23,760 INFO L124 PetriNetUnfolderBase]: 173/344 cut-off events. [2025-02-06 18:55:23,761 INFO L125 PetriNetUnfolderBase]: For 376/396 co-relation queries the response was YES. [2025-02-06 18:55:23,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 344 events. 173/344 cut-off events. For 376/396 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1607 event pairs, 97 based on Foata normal form. 36/352 useless extension candidates. Maximal degree in co-relation 558. Up to 235 conditions per place. [2025-02-06 18:55:23,763 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 33 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2025-02-06 18:55:23,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 242 flow [2025-02-06 18:55:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:55:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:55:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2025-02-06 18:55:23,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-02-06 18:55:23,764 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 144 flow. Second operand 3 states and 55 transitions. [2025-02-06 18:55:23,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 242 flow [2025-02-06 18:55:23,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:55:23,766 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 136 flow [2025-02-06 18:55:23,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2025-02-06 18:55:23,767 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2025-02-06 18:55:23,767 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 136 flow [2025-02-06 18:55:23,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 18:55:23,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:23,768 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:23,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:55:23,768 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:23,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:23,769 INFO L85 PathProgramCache]: Analyzing trace with hash 758323542, now seen corresponding path program 1 times [2025-02-06 18:55:23,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:23,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608144105] [2025-02-06 18:55:23,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:23,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:23,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:55:23,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:55:23,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:23,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:23,807 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 18:55:23,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:23,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608144105] [2025-02-06 18:55:23,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608144105] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:23,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:23,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:55:23,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959561015] [2025-02-06 18:55:23,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:23,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:55:23,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:23,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:55:23,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:55:23,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:55:23,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 136 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 18:55:23,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:23,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:55:23,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:23,904 INFO L124 PetriNetUnfolderBase]: 178/332 cut-off events. [2025-02-06 18:55:23,905 INFO L125 PetriNetUnfolderBase]: For 321/341 co-relation queries the response was YES. [2025-02-06 18:55:23,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 332 events. 178/332 cut-off events. For 321/341 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1379 event pairs, 51 based on Foata normal form. 20/320 useless extension candidates. Maximal degree in co-relation 497. Up to 149 conditions per place. [2025-02-06 18:55:23,907 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 36 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2025-02-06 18:55:23,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 302 flow [2025-02-06 18:55:23,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:55:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:55:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-02-06 18:55:23,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-02-06 18:55:23,909 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 136 flow. Second operand 4 states and 76 transitions. [2025-02-06 18:55:23,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 302 flow [2025-02-06 18:55:23,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:55:23,911 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 177 flow [2025-02-06 18:55:23,911 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2025-02-06 18:55:23,912 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2025-02-06 18:55:23,912 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 177 flow [2025-02-06 18:55:23,912 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 18:55:23,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:23,912 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:23,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:55:23,915 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:23,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:23,916 INFO L85 PathProgramCache]: Analyzing trace with hash 758323543, now seen corresponding path program 1 times [2025-02-06 18:55:23,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:23,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146132726] [2025-02-06 18:55:23,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:23,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:23,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:55:23,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:55:23,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:23,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:23,998 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 18:55:23,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:23,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146132726] [2025-02-06 18:55:23,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146132726] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:23,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:23,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:55:23,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100004497] [2025-02-06 18:55:23,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:23,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:55:23,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:24,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:55:24,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:55:24,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2025-02-06 18:55:24,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 177 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 18:55:24,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:24,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2025-02-06 18:55:24,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:24,104 INFO L124 PetriNetUnfolderBase]: 195/380 cut-off events. [2025-02-06 18:55:24,104 INFO L125 PetriNetUnfolderBase]: For 431/451 co-relation queries the response was YES. [2025-02-06 18:55:24,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 380 events. 195/380 cut-off events. For 431/451 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1683 event pairs, 54 based on Foata normal form. 30/394 useless extension candidates. Maximal degree in co-relation 615. Up to 161 conditions per place. [2025-02-06 18:55:24,107 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 20 changer transitions 0/61 dead transitions. [2025-02-06 18:55:24,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 61 transitions, 409 flow [2025-02-06 18:55:24,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:55:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:55:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2025-02-06 18:55:24,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-02-06 18:55:24,110 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 177 flow. Second operand 4 states and 80 transitions. [2025-02-06 18:55:24,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 61 transitions, 409 flow [2025-02-06 18:55:24,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 61 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:55:24,114 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 309 flow [2025-02-06 18:55:24,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=309, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2025-02-06 18:55:24,114 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2025-02-06 18:55:24,115 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 309 flow [2025-02-06 18:55:24,115 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 18:55:24,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:24,115 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:24,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:55:24,115 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:24,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash 758323577, now seen corresponding path program 1 times [2025-02-06 18:55:24,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:24,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094549084] [2025-02-06 18:55:24,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:24,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:24,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:55:24,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:55:24,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:24,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:24,168 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 18:55:24,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:24,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094549084] [2025-02-06 18:55:24,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094549084] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:24,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:24,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:55:24,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943483009] [2025-02-06 18:55:24,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:24,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:24,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:24,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:24,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:55:24,178 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-06 18:55:24,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:55:24,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:24,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-06 18:55:24,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:24,295 INFO L124 PetriNetUnfolderBase]: 254/428 cut-off events. [2025-02-06 18:55:24,295 INFO L125 PetriNetUnfolderBase]: For 653/685 co-relation queries the response was YES. [2025-02-06 18:55:24,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 428 events. 254/428 cut-off events. For 653/685 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1687 event pairs, 22 based on Foata normal form. 47/473 useless extension candidates. Maximal degree in co-relation 830. Up to 262 conditions per place. [2025-02-06 18:55:24,298 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 56 selfloop transitions, 7 changer transitions 0/67 dead transitions. [2025-02-06 18:55:24,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 67 transitions, 543 flow [2025-02-06 18:55:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:55:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:55:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2025-02-06 18:55:24,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2025-02-06 18:55:24,300 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 309 flow. Second operand 5 states and 74 transitions. [2025-02-06 18:55:24,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 67 transitions, 543 flow [2025-02-06 18:55:24,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:55:24,303 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 304 flow [2025-02-06 18:55:24,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2025-02-06 18:55:24,304 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2025-02-06 18:55:24,304 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 304 flow [2025-02-06 18:55:24,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:55:24,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:24,304 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:24,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:55:24,305 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:24,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:24,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2126317864, now seen corresponding path program 1 times [2025-02-06 18:55:24,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:24,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842852108] [2025-02-06 18:55:24,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:24,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:24,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:55:24,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:55:24,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:24,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:24,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842852108] [2025-02-06 18:55:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842852108] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:24,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:24,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:55:24,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406382031] [2025-02-06 18:55:24,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:24,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:24,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:24,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:24,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:55:24,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:24,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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 18:55:24,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:24,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:24,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:24,502 INFO L124 PetriNetUnfolderBase]: 174/329 cut-off events. [2025-02-06 18:55:24,502 INFO L125 PetriNetUnfolderBase]: For 695/717 co-relation queries the response was YES. [2025-02-06 18:55:24,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 329 events. 174/329 cut-off events. For 695/717 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1348 event pairs, 35 based on Foata normal form. 34/362 useless extension candidates. Maximal degree in co-relation 867. Up to 157 conditions per place. [2025-02-06 18:55:24,507 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 42 selfloop transitions, 24 changer transitions 0/73 dead transitions. [2025-02-06 18:55:24,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 73 transitions, 582 flow [2025-02-06 18:55:24,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:55:24,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:55:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2025-02-06 18:55:24,509 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55625 [2025-02-06 18:55:24,510 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 304 flow. Second operand 5 states and 89 transitions. [2025-02-06 18:55:24,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 73 transitions, 582 flow [2025-02-06 18:55:24,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 550 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:55:24,514 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 408 flow [2025-02-06 18:55:24,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2025-02-06 18:55:24,515 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2025-02-06 18:55:24,516 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 408 flow [2025-02-06 18:55:24,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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 18:55:24,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:24,517 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:24,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:55:24,517 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:24,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:24,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2033194593, now seen corresponding path program 1 times [2025-02-06 18:55:24,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:24,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985157674] [2025-02-06 18:55:24,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:24,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:24,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:55:24,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:55:24,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:24,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:24,552 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 18:55:24,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:24,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985157674] [2025-02-06 18:55:24,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985157674] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:24,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:24,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:55:24,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166157379] [2025-02-06 18:55:24,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:24,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:55:24,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:24,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:55:24,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:55:24,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:24,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 18:55:24,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:24,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:24,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:24,629 INFO L124 PetriNetUnfolderBase]: 174/314 cut-off events. [2025-02-06 18:55:24,629 INFO L125 PetriNetUnfolderBase]: For 1020/1040 co-relation queries the response was YES. [2025-02-06 18:55:24,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 314 events. 174/314 cut-off events. For 1020/1040 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1219 event pairs, 76 based on Foata normal form. 33/345 useless extension candidates. Maximal degree in co-relation 823. Up to 233 conditions per place. [2025-02-06 18:55:24,632 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 50 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2025-02-06 18:55:24,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 578 flow [2025-02-06 18:55:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:55:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:55:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-02-06 18:55:24,632 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-02-06 18:55:24,633 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 408 flow. Second operand 3 states and 52 transitions. [2025-02-06 18:55:24,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 578 flow [2025-02-06 18:55:24,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:55:24,636 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 393 flow [2025-02-06 18:55:24,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2025-02-06 18:55:24,636 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2025-02-06 18:55:24,636 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 393 flow [2025-02-06 18:55:24,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 18:55:24,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:24,637 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:24,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:55:24,637 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:24,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:24,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1941299316, now seen corresponding path program 1 times [2025-02-06 18:55:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:24,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818285234] [2025-02-06 18:55:24,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:24,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:24,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:24,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:24,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:24,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:24,712 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 18:55:24,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:24,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818285234] [2025-02-06 18:55:24,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818285234] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:24,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:24,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:55:24,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887235839] [2025-02-06 18:55:24,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:24,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:55:24,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:24,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:55:24,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:24,721 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:55:24,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 393 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 18:55:24,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:24,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:55:24,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:24,931 INFO L124 PetriNetUnfolderBase]: 256/477 cut-off events. [2025-02-06 18:55:24,931 INFO L125 PetriNetUnfolderBase]: For 1123/1133 co-relation queries the response was YES. [2025-02-06 18:55:24,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1711 conditions, 477 events. 256/477 cut-off events. For 1123/1133 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2117 event pairs, 30 based on Foata normal form. 15/492 useless extension candidates. Maximal degree in co-relation 1033. Up to 140 conditions per place. [2025-02-06 18:55:24,934 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 51 selfloop transitions, 37 changer transitions 0/92 dead transitions. [2025-02-06 18:55:24,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 92 transitions, 747 flow [2025-02-06 18:55:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 18:55:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 18:55:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2025-02-06 18:55:24,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2025-02-06 18:55:24,937 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 393 flow. Second operand 9 states and 158 transitions. [2025-02-06 18:55:24,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 92 transitions, 747 flow [2025-02-06 18:55:24,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 723 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:55:24,942 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 535 flow [2025-02-06 18:55:24,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=535, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2025-02-06 18:55:24,944 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2025-02-06 18:55:24,945 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 535 flow [2025-02-06 18:55:24,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 18:55:24,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:24,945 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:24,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:55:24,945 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:24,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:24,946 INFO L85 PathProgramCache]: Analyzing trace with hash -636298681, now seen corresponding path program 1 times [2025-02-06 18:55:24,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:24,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432612540] [2025-02-06 18:55:24,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:24,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:24,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:24,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:24,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:24,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:25,010 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 18:55:25,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432612540] [2025-02-06 18:55:25,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432612540] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:25,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:25,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:55:25,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876025581] [2025-02-06 18:55:25,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:25,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:55:25,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:25,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:55:25,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:25,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:25,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:25,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:25,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:25,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:25,220 INFO L124 PetriNetUnfolderBase]: 329/568 cut-off events. [2025-02-06 18:55:25,220 INFO L125 PetriNetUnfolderBase]: For 1989/1989 co-relation queries the response was YES. [2025-02-06 18:55:25,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2290 conditions, 568 events. 329/568 cut-off events. For 1989/1989 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2409 event pairs, 62 based on Foata normal form. 10/577 useless extension candidates. Maximal degree in co-relation 1796. Up to 256 conditions per place. [2025-02-06 18:55:25,225 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 61 selfloop transitions, 38 changer transitions 0/101 dead transitions. [2025-02-06 18:55:25,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 1034 flow [2025-02-06 18:55:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:55:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:55:25,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2025-02-06 18:55:25,226 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48046875 [2025-02-06 18:55:25,226 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 535 flow. Second operand 8 states and 123 transitions. [2025-02-06 18:55:25,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 1034 flow [2025-02-06 18:55:25,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 894 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-06 18:55:25,233 INFO L231 Difference]: Finished difference. Result has 61 places, 77 transitions, 698 flow [2025-02-06 18:55:25,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=61, PETRI_TRANSITIONS=77} [2025-02-06 18:55:25,233 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2025-02-06 18:55:25,233 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 77 transitions, 698 flow [2025-02-06 18:55:25,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:25,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:25,234 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:25,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:55:25,234 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:25,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:25,235 INFO L85 PathProgramCache]: Analyzing trace with hash -624071021, now seen corresponding path program 2 times [2025-02-06 18:55:25,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:25,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882839002] [2025-02-06 18:55:25,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:55:25,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:25,241 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:25,243 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:25,243 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:55:25,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:25,314 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 18:55:25,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:25,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882839002] [2025-02-06 18:55:25,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882839002] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:25,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:25,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:55:25,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566289935] [2025-02-06 18:55:25,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:25,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:55:25,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:25,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:55:25,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:25,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:25,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 77 transitions, 698 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:25,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:25,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:25,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:25,494 INFO L124 PetriNetUnfolderBase]: 341/608 cut-off events. [2025-02-06 18:55:25,494 INFO L125 PetriNetUnfolderBase]: For 1701/1701 co-relation queries the response was YES. [2025-02-06 18:55:25,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 608 events. 341/608 cut-off events. For 1701/1701 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2616 event pairs, 74 based on Foata normal form. 10/617 useless extension candidates. Maximal degree in co-relation 2077. Up to 200 conditions per place. [2025-02-06 18:55:25,499 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 59 selfloop transitions, 42 changer transitions 0/103 dead transitions. [2025-02-06 18:55:25,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 1060 flow [2025-02-06 18:55:25,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:55:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:55:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2025-02-06 18:55:25,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2025-02-06 18:55:25,500 INFO L175 Difference]: Start difference. First operand has 61 places, 77 transitions, 698 flow. Second operand 8 states and 121 transitions. [2025-02-06 18:55:25,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 1060 flow [2025-02-06 18:55:25,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 1011 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-06 18:55:25,508 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 846 flow [2025-02-06 18:55:25,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=846, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2025-02-06 18:55:25,509 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2025-02-06 18:55:25,509 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 846 flow [2025-02-06 18:55:25,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:25,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:25,509 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:25,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:55:25,509 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:25,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:25,510 INFO L85 PathProgramCache]: Analyzing trace with hash -633331960, now seen corresponding path program 2 times [2025-02-06 18:55:25,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:25,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391167863] [2025-02-06 18:55:25,510 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:55:25,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:25,514 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:25,518 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:25,518 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:55:25,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:25,592 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 18:55:25,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:25,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391167863] [2025-02-06 18:55:25,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391167863] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:25,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:25,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:55:25,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164541147] [2025-02-06 18:55:25,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:25,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:55:25,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:25,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:55:25,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:25,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:55:25,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 846 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 18:55:25,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:25,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:55:25,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:25,832 INFO L124 PetriNetUnfolderBase]: 348/649 cut-off events. [2025-02-06 18:55:25,833 INFO L125 PetriNetUnfolderBase]: For 2768/2782 co-relation queries the response was YES. [2025-02-06 18:55:25,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2894 conditions, 649 events. 348/649 cut-off events. For 2768/2782 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3133 event pairs, 36 based on Foata normal form. 25/666 useless extension candidates. Maximal degree in co-relation 2487. Up to 300 conditions per place. [2025-02-06 18:55:25,838 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 56 changer transitions 2/122 dead transitions. [2025-02-06 18:55:25,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 122 transitions, 1397 flow [2025-02-06 18:55:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:55:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:55:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2025-02-06 18:55:25,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-06 18:55:25,839 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 846 flow. Second operand 8 states and 144 transitions. [2025-02-06 18:55:25,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 122 transitions, 1397 flow [2025-02-06 18:55:25,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 122 transitions, 1351 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 18:55:25,849 INFO L231 Difference]: Finished difference. Result has 76 places, 90 transitions, 1082 flow [2025-02-06 18:55:25,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1082, PETRI_PLACES=76, PETRI_TRANSITIONS=90} [2025-02-06 18:55:25,849 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 43 predicate places. [2025-02-06 18:55:25,849 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 90 transitions, 1082 flow [2025-02-06 18:55:25,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 18:55:25,849 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:25,849 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:25,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:55:25,850 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:25,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:25,850 INFO L85 PathProgramCache]: Analyzing trace with hash -636305191, now seen corresponding path program 3 times [2025-02-06 18:55:25,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:25,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75166853] [2025-02-06 18:55:25,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:55:25,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:25,854 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:25,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:25,856 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:55:25,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:25,907 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 18:55:25,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:25,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75166853] [2025-02-06 18:55:25,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75166853] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:25,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:25,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:55:25,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091562958] [2025-02-06 18:55:25,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:25,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:55:25,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:25,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:55:25,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:25,911 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:25,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 90 transitions, 1082 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:25,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:25,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:25,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:26,082 INFO L124 PetriNetUnfolderBase]: 379/673 cut-off events. [2025-02-06 18:55:26,082 INFO L125 PetriNetUnfolderBase]: For 3358/3362 co-relation queries the response was YES. [2025-02-06 18:55:26,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3186 conditions, 673 events. 379/673 cut-off events. For 3358/3362 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3056 event pairs, 67 based on Foata normal form. 20/692 useless extension candidates. Maximal degree in co-relation 2895. Up to 172 conditions per place. [2025-02-06 18:55:26,087 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 62 selfloop transitions, 47 changer transitions 0/111 dead transitions. [2025-02-06 18:55:26,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 111 transitions, 1384 flow [2025-02-06 18:55:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:55:26,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:55:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2025-02-06 18:55:26,088 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2025-02-06 18:55:26,088 INFO L175 Difference]: Start difference. First operand has 76 places, 90 transitions, 1082 flow. Second operand 8 states and 119 transitions. [2025-02-06 18:55:26,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 111 transitions, 1384 flow [2025-02-06 18:55:26,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 111 transitions, 1147 flow, removed 4 selfloop flow, removed 9 redundant places. [2025-02-06 18:55:26,101 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 913 flow [2025-02-06 18:55:26,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=913, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2025-02-06 18:55:26,102 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2025-02-06 18:55:26,102 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 913 flow [2025-02-06 18:55:26,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:26,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:26,102 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:26,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:55:26,103 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:26,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:26,103 INFO L85 PathProgramCache]: Analyzing trace with hash -322605960, now seen corresponding path program 3 times [2025-02-06 18:55:26,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:26,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559417379] [2025-02-06 18:55:26,103 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:55:26,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:26,106 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:26,109 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:26,109 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:55:26,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:26,198 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 18:55:26,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:26,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559417379] [2025-02-06 18:55:26,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559417379] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:26,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:26,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:55:26,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893928418] [2025-02-06 18:55:26,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:26,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:55:26,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:26,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:55:26,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:26,205 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:26,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 913 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:26,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:26,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:26,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:26,375 INFO L124 PetriNetUnfolderBase]: 413/760 cut-off events. [2025-02-06 18:55:26,375 INFO L125 PetriNetUnfolderBase]: For 2434/2438 co-relation queries the response was YES. [2025-02-06 18:55:26,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 760 events. 413/760 cut-off events. For 2434/2438 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3674 event pairs, 91 based on Foata normal form. 19/778 useless extension candidates. Maximal degree in co-relation 3061. Up to 360 conditions per place. [2025-02-06 18:55:26,380 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 49 changer transitions 3/113 dead transitions. [2025-02-06 18:55:26,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 113 transitions, 1322 flow [2025-02-06 18:55:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:55:26,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:55:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2025-02-06 18:55:26,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2025-02-06 18:55:26,381 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 913 flow. Second operand 6 states and 106 transitions. [2025-02-06 18:55:26,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 113 transitions, 1322 flow [2025-02-06 18:55:26,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 113 transitions, 1223 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-02-06 18:55:26,389 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 969 flow [2025-02-06 18:55:26,389 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=969, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2025-02-06 18:55:26,390 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 40 predicate places. [2025-02-06 18:55:26,390 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 969 flow [2025-02-06 18:55:26,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:26,390 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:26,390 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:26,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 18:55:26,390 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:26,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:26,390 INFO L85 PathProgramCache]: Analyzing trace with hash -633325121, now seen corresponding path program 1 times [2025-02-06 18:55:26,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:26,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292702316] [2025-02-06 18:55:26,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:26,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:26,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:26,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:26,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:26,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:26,439 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 18:55:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292702316] [2025-02-06 18:55:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292702316] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:26,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:26,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:55:26,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178207876] [2025-02-06 18:55:26,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:26,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:55:26,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:26,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:55:26,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:26,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:26,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 969 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:26,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:26,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:26,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:26,618 INFO L124 PetriNetUnfolderBase]: 415/754 cut-off events. [2025-02-06 18:55:26,619 INFO L125 PetriNetUnfolderBase]: For 2550/2558 co-relation queries the response was YES. [2025-02-06 18:55:26,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 754 events. 415/754 cut-off events. For 2550/2558 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3626 event pairs, 109 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 3083. Up to 328 conditions per place. [2025-02-06 18:55:26,623 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 46 changer transitions 0/111 dead transitions. [2025-02-06 18:55:26,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 1320 flow [2025-02-06 18:55:26,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:55:26,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:55:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2025-02-06 18:55:26,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2025-02-06 18:55:26,625 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 969 flow. Second operand 6 states and 98 transitions. [2025-02-06 18:55:26,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 1320 flow [2025-02-06 18:55:26,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 1233 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-06 18:55:26,635 INFO L231 Difference]: Finished difference. Result has 78 places, 92 transitions, 1066 flow [2025-02-06 18:55:26,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1066, PETRI_PLACES=78, PETRI_TRANSITIONS=92} [2025-02-06 18:55:26,635 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2025-02-06 18:55:26,636 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 92 transitions, 1066 flow [2025-02-06 18:55:26,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:26,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:26,636 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:26,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 18:55:26,636 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:26,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:26,636 INFO L85 PathProgramCache]: Analyzing trace with hash -624070690, now seen corresponding path program 1 times [2025-02-06 18:55:26,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:26,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37226345] [2025-02-06 18:55:26,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:26,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:26,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:26,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:26,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:26,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:26,699 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 18:55:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:26,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37226345] [2025-02-06 18:55:26,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37226345] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:26,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:26,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:55:26,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667047691] [2025-02-06 18:55:26,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:26,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:55:26,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:26,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:55:26,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:26,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:26,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 92 transitions, 1066 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:26,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:26,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:26,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:26,898 INFO L124 PetriNetUnfolderBase]: 431/795 cut-off events. [2025-02-06 18:55:26,898 INFO L125 PetriNetUnfolderBase]: For 3106/3114 co-relation queries the response was YES. [2025-02-06 18:55:26,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3516 conditions, 795 events. 431/795 cut-off events. For 3106/3114 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3903 event pairs, 76 based on Foata normal form. 16/811 useless extension candidates. Maximal degree in co-relation 3226. Up to 389 conditions per place. [2025-02-06 18:55:26,903 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 51 changer transitions 2/121 dead transitions. [2025-02-06 18:55:26,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 121 transitions, 1484 flow [2025-02-06 18:55:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:55:26,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:55:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2025-02-06 18:55:26,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2025-02-06 18:55:26,906 INFO L175 Difference]: Start difference. First operand has 78 places, 92 transitions, 1066 flow. Second operand 6 states and 109 transitions. [2025-02-06 18:55:26,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 121 transitions, 1484 flow [2025-02-06 18:55:26,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 1462 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 18:55:26,918 INFO L231 Difference]: Finished difference. Result has 84 places, 93 transitions, 1195 flow [2025-02-06 18:55:26,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1195, PETRI_PLACES=84, PETRI_TRANSITIONS=93} [2025-02-06 18:55:26,919 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2025-02-06 18:55:26,919 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 93 transitions, 1195 flow [2025-02-06 18:55:26,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:26,920 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:26,920 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:26,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 18:55:26,920 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:26,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash -311557230, now seen corresponding path program 2 times [2025-02-06 18:55:26,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:26,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149519096] [2025-02-06 18:55:26,921 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:55:26,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:26,925 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:26,928 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:26,928 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:55:26,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:26,997 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 18:55:26,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:26,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149519096] [2025-02-06 18:55:26,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149519096] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:26,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:26,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:55:26,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258902280] [2025-02-06 18:55:26,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:26,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:55:26,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:26,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:55:26,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:27,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:55:27,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 93 transitions, 1195 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 18:55:27,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:27,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:55:27,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:27,220 INFO L124 PetriNetUnfolderBase]: 393/752 cut-off events. [2025-02-06 18:55:27,221 INFO L125 PetriNetUnfolderBase]: For 4453/4487 co-relation queries the response was YES. [2025-02-06 18:55:27,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3490 conditions, 752 events. 393/752 cut-off events. For 4453/4487 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3848 event pairs, 54 based on Foata normal form. 30/777 useless extension candidates. Maximal degree in co-relation 3188. Up to 399 conditions per place. [2025-02-06 18:55:27,227 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 57 selfloop transitions, 57 changer transitions 3/123 dead transitions. [2025-02-06 18:55:27,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 123 transitions, 1600 flow [2025-02-06 18:55:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:55:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:55:27,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2025-02-06 18:55:27,229 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2025-02-06 18:55:27,229 INFO L175 Difference]: Start difference. First operand has 84 places, 93 transitions, 1195 flow. Second operand 8 states and 142 transitions. [2025-02-06 18:55:27,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 123 transitions, 1600 flow [2025-02-06 18:55:27,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 123 transitions, 1531 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-02-06 18:55:27,244 INFO L231 Difference]: Finished difference. Result has 90 places, 94 transitions, 1288 flow [2025-02-06 18:55:27,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1288, PETRI_PLACES=90, PETRI_TRANSITIONS=94} [2025-02-06 18:55:27,245 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 57 predicate places. [2025-02-06 18:55:27,245 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 94 transitions, 1288 flow [2025-02-06 18:55:27,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 18:55:27,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:27,245 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:27,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 18:55:27,245 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:27,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:27,246 INFO L85 PathProgramCache]: Analyzing trace with hash -311557231, now seen corresponding path program 2 times [2025-02-06 18:55:27,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:27,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925830517] [2025-02-06 18:55:27,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:55:27,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:27,251 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:27,254 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:27,254 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:55:27,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:27,301 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 18:55:27,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:27,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925830517] [2025-02-06 18:55:27,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925830517] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:27,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:27,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:55:27,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809320356] [2025-02-06 18:55:27,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:27,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:55:27,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:27,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:55:27,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:27,308 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:27,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 94 transitions, 1288 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:27,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:27,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:27,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:27,464 INFO L124 PetriNetUnfolderBase]: 447/832 cut-off events. [2025-02-06 18:55:27,464 INFO L125 PetriNetUnfolderBase]: For 5215/5215 co-relation queries the response was YES. [2025-02-06 18:55:27,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 832 events. 447/832 cut-off events. For 5215/5215 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4143 event pairs, 111 based on Foata normal form. 12/843 useless extension candidates. Maximal degree in co-relation 3655. Up to 431 conditions per place. [2025-02-06 18:55:27,470 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 66 selfloop transitions, 42 changer transitions 2/112 dead transitions. [2025-02-06 18:55:27,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 112 transitions, 1637 flow [2025-02-06 18:55:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:55:27,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:55:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2025-02-06 18:55:27,471 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2025-02-06 18:55:27,471 INFO L175 Difference]: Start difference. First operand has 90 places, 94 transitions, 1288 flow. Second operand 6 states and 95 transitions. [2025-02-06 18:55:27,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 112 transitions, 1637 flow [2025-02-06 18:55:27,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 112 transitions, 1493 flow, removed 6 selfloop flow, removed 7 redundant places. [2025-02-06 18:55:27,491 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 1267 flow [2025-02-06 18:55:27,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1267, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2025-02-06 18:55:27,492 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 57 predicate places. [2025-02-06 18:55:27,492 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 1267 flow [2025-02-06 18:55:27,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:27,492 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:27,492 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:27,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-06 18:55:27,492 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:27,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:27,493 INFO L85 PathProgramCache]: Analyzing trace with hash -322268041, now seen corresponding path program 3 times [2025-02-06 18:55:27,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:27,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319328643] [2025-02-06 18:55:27,493 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:55:27,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:27,496 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:27,498 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:27,498 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:55:27,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:27,540 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 18:55:27,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:27,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319328643] [2025-02-06 18:55:27,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319328643] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:27,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:27,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:55:27,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787361307] [2025-02-06 18:55:27,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:27,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:55:27,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:27,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:55:27,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:27,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:27,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 1267 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:27,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:27,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:27,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:27,686 INFO L124 PetriNetUnfolderBase]: 431/804 cut-off events. [2025-02-06 18:55:27,686 INFO L125 PetriNetUnfolderBase]: For 5018/5018 co-relation queries the response was YES. [2025-02-06 18:55:27,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3734 conditions, 804 events. 431/804 cut-off events. For 5018/5018 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3991 event pairs, 103 based on Foata normal form. 12/815 useless extension candidates. Maximal degree in co-relation 3525. Up to 303 conditions per place. [2025-02-06 18:55:27,692 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 64 selfloop transitions, 41 changer transitions 0/107 dead transitions. [2025-02-06 18:55:27,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 107 transitions, 1541 flow [2025-02-06 18:55:27,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:55:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:55:27,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2025-02-06 18:55:27,693 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2025-02-06 18:55:27,693 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 1267 flow. Second operand 6 states and 91 transitions. [2025-02-06 18:55:27,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 107 transitions, 1541 flow [2025-02-06 18:55:27,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 107 transitions, 1294 flow, removed 4 selfloop flow, removed 10 redundant places. [2025-02-06 18:55:27,714 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 1074 flow [2025-02-06 18:55:27,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1074, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2025-02-06 18:55:27,715 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2025-02-06 18:55:27,715 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 1074 flow [2025-02-06 18:55:27,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:55:27,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:27,716 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:27,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 18:55:27,716 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:27,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:27,716 INFO L85 PathProgramCache]: Analyzing trace with hash -310108155, now seen corresponding path program 1 times [2025-02-06 18:55:27,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:27,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316649198] [2025-02-06 18:55:27,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:27,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:27,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:27,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:27,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:27,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:27,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:27,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316649198] [2025-02-06 18:55:27,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316649198] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:27,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:27,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:55:27,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733889924] [2025-02-06 18:55:27,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:27,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:27,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:27,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:27,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:55:27,777 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:27,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 1074 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 18:55:27,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:27,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:27,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:27,877 INFO L124 PetriNetUnfolderBase]: 284/575 cut-off events. [2025-02-06 18:55:27,877 INFO L125 PetriNetUnfolderBase]: For 3018/3038 co-relation queries the response was YES. [2025-02-06 18:55:27,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2628 conditions, 575 events. 284/575 cut-off events. For 3018/3038 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2986 event pairs, 42 based on Foata normal form. 16/585 useless extension candidates. Maximal degree in co-relation 2443. Up to 345 conditions per place. [2025-02-06 18:55:27,881 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 51 selfloop transitions, 42 changer transitions 0/101 dead transitions. [2025-02-06 18:55:27,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 1315 flow [2025-02-06 18:55:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:55:27,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:55:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2025-02-06 18:55:27,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-06 18:55:27,884 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 1074 flow. Second operand 5 states and 80 transitions. [2025-02-06 18:55:27,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 1315 flow [2025-02-06 18:55:27,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 1215 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-02-06 18:55:27,894 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 1042 flow [2025-02-06 18:55:27,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1042, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2025-02-06 18:55:27,895 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 46 predicate places. [2025-02-06 18:55:27,895 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 1042 flow [2025-02-06 18:55:27,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 18:55:27,895 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:27,895 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:27,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-06 18:55:27,895 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:27,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:27,896 INFO L85 PathProgramCache]: Analyzing trace with hash -311082000, now seen corresponding path program 3 times [2025-02-06 18:55:27,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:27,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471702273] [2025-02-06 18:55:27,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:55:27,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:27,899 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:55:27,903 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:55:27,904 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:55:27,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:27,951 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 18:55:27,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:27,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471702273] [2025-02-06 18:55:27,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471702273] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:27,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:27,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:55:27,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368365845] [2025-02-06 18:55:27,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:27,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:55:27,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:27,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:55:27,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:27,957 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:55:27,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 1042 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 18:55:27,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:27,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:55:27,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:28,124 INFO L124 PetriNetUnfolderBase]: 379/741 cut-off events. [2025-02-06 18:55:28,124 INFO L125 PetriNetUnfolderBase]: For 3099/3115 co-relation queries the response was YES. [2025-02-06 18:55:28,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3244 conditions, 741 events. 379/741 cut-off events. For 3099/3115 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3944 event pairs, 48 based on Foata normal form. 8/746 useless extension candidates. Maximal degree in co-relation 2989. Up to 345 conditions per place. [2025-02-06 18:55:28,129 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 55 selfloop transitions, 53 changer transitions 1/114 dead transitions. [2025-02-06 18:55:28,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 114 transitions, 1415 flow [2025-02-06 18:55:28,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:55:28,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:55:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2025-02-06 18:55:28,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2025-02-06 18:55:28,133 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 1042 flow. Second operand 8 states and 136 transitions. [2025-02-06 18:55:28,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 114 transitions, 1415 flow [2025-02-06 18:55:28,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 114 transitions, 1380 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:55:28,144 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 1144 flow [2025-02-06 18:55:28,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1144, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2025-02-06 18:55:28,145 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 54 predicate places. [2025-02-06 18:55:28,145 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 1144 flow [2025-02-06 18:55:28,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 18:55:28,145 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:28,145 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:28,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 18:55:28,145 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:28,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:28,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2045118613, now seen corresponding path program 1 times [2025-02-06 18:55:28,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:28,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825431149] [2025-02-06 18:55:28,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:28,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:28,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:55:28,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:28,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:28,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:28,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:28,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825431149] [2025-02-06 18:55:28,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825431149] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:28,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611843380] [2025-02-06 18:55:28,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:28,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:28,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:28,193 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 18:55:28,194 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 18:55:28,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:55:28,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:28,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:28,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:28,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:55:28,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:28,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:55:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:28,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611843380] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:28,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:55:28,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2025-02-06 18:55:28,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859010205] [2025-02-06 18:55:28,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:28,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:28,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:28,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:28,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:28,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:28,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 1144 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:28,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:28,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:28,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:28,492 INFO L124 PetriNetUnfolderBase]: 480/913 cut-off events. [2025-02-06 18:55:28,492 INFO L125 PetriNetUnfolderBase]: For 4161/4161 co-relation queries the response was YES. [2025-02-06 18:55:28,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4021 conditions, 913 events. 480/913 cut-off events. For 4161/4161 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4796 event pairs, 50 based on Foata normal form. 13/926 useless extension candidates. Maximal degree in co-relation 3802. Up to 346 conditions per place. [2025-02-06 18:55:28,499 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 107 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2025-02-06 18:55:28,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 142 transitions, 1806 flow [2025-02-06 18:55:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:55:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:55:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2025-02-06 18:55:28,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2025-02-06 18:55:28,501 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 1144 flow. Second operand 7 states and 118 transitions. [2025-02-06 18:55:28,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 142 transitions, 1806 flow [2025-02-06 18:55:28,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1679 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-06 18:55:28,516 INFO L231 Difference]: Finished difference. Result has 91 places, 105 transitions, 1298 flow [2025-02-06 18:55:28,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1298, PETRI_PLACES=91, PETRI_TRANSITIONS=105} [2025-02-06 18:55:28,517 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 58 predicate places. [2025-02-06 18:55:28,517 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 105 transitions, 1298 flow [2025-02-06 18:55:28,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:28,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:28,518 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:28,526 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 18:55:28,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-02-06 18:55:28,722 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:28,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:28,722 INFO L85 PathProgramCache]: Analyzing trace with hash 31309578, now seen corresponding path program 1 times [2025-02-06 18:55:28,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:28,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688915823] [2025-02-06 18:55:28,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:28,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:55:28,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:28,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:28,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:28,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:28,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688915823] [2025-02-06 18:55:28,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688915823] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:28,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343875381] [2025-02-06 18:55:28,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:28,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:28,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:28,761 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 18:55:28,763 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 18:55:28,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:55:28,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:28,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:28,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:28,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:55:28,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:28,814 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:55:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:28,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343875381] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:28,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:55:28,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2025-02-06 18:55:28,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510403531] [2025-02-06 18:55:28,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:28,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:28,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:28,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:28,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:55:28,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:28,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 105 transitions, 1298 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:28,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:28,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:28,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:29,045 INFO L124 PetriNetUnfolderBase]: 523/996 cut-off events. [2025-02-06 18:55:29,046 INFO L125 PetriNetUnfolderBase]: For 4947/4951 co-relation queries the response was YES. [2025-02-06 18:55:29,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4591 conditions, 996 events. 523/996 cut-off events. For 4947/4951 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5222 event pairs, 60 based on Foata normal form. 16/1012 useless extension candidates. Maximal degree in co-relation 4293. Up to 392 conditions per place. [2025-02-06 18:55:29,055 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 112 selfloop transitions, 43 changer transitions 0/157 dead transitions. [2025-02-06 18:55:29,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 157 transitions, 2016 flow [2025-02-06 18:55:29,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:55:29,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:55:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2025-02-06 18:55:29,056 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2025-02-06 18:55:29,056 INFO L175 Difference]: Start difference. First operand has 91 places, 105 transitions, 1298 flow. Second operand 7 states and 115 transitions. [2025-02-06 18:55:29,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 157 transitions, 2016 flow [2025-02-06 18:55:29,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 157 transitions, 1973 flow, removed 16 selfloop flow, removed 1 redundant places. [2025-02-06 18:55:29,077 INFO L231 Difference]: Finished difference. Result has 99 places, 124 transitions, 1600 flow [2025-02-06 18:55:29,077 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1600, PETRI_PLACES=99, PETRI_TRANSITIONS=124} [2025-02-06 18:55:29,078 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 66 predicate places. [2025-02-06 18:55:29,078 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 124 transitions, 1600 flow [2025-02-06 18:55:29,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:29,078 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:29,078 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:29,086 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 18:55:29,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:29,279 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:29,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:29,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1928140258, now seen corresponding path program 2 times [2025-02-06 18:55:29,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:29,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772983858] [2025-02-06 18:55:29,280 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:55:29,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:29,284 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:29,288 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:29,288 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:55:29,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:29,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:29,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772983858] [2025-02-06 18:55:29,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772983858] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:29,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728656809] [2025-02-06 18:55:29,377 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:55:29,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:29,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:29,379 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 18:55:29,381 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 18:55:29,411 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:29,422 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:29,422 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:55:29,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:29,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:55:29,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:29,461 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:55:29,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728656809] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:29,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:55:29,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2025-02-06 18:55:29,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937613579] [2025-02-06 18:55:29,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:29,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:29,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:29,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:55:29,467 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:29,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 124 transitions, 1600 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:29,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:29,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:29,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:29,693 INFO L124 PetriNetUnfolderBase]: 547/1032 cut-off events. [2025-02-06 18:55:29,694 INFO L125 PetriNetUnfolderBase]: For 6233/6233 co-relation queries the response was YES. [2025-02-06 18:55:29,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5153 conditions, 1032 events. 547/1032 cut-off events. For 6233/6233 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5475 event pairs, 77 based on Foata normal form. 12/1044 useless extension candidates. Maximal degree in co-relation 4885. Up to 272 conditions per place. [2025-02-06 18:55:29,699 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 145 selfloop transitions, 31 changer transitions 8/186 dead transitions. [2025-02-06 18:55:29,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 186 transitions, 2546 flow [2025-02-06 18:55:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:55:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:55:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2025-02-06 18:55:29,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2025-02-06 18:55:29,700 INFO L175 Difference]: Start difference. First operand has 99 places, 124 transitions, 1600 flow. Second operand 7 states and 120 transitions. [2025-02-06 18:55:29,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 186 transitions, 2546 flow [2025-02-06 18:55:29,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 186 transitions, 2503 flow, removed 16 selfloop flow, removed 1 redundant places. [2025-02-06 18:55:29,720 INFO L231 Difference]: Finished difference. Result has 108 places, 138 transitions, 1828 flow [2025-02-06 18:55:29,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1828, PETRI_PLACES=108, PETRI_TRANSITIONS=138} [2025-02-06 18:55:29,721 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 75 predicate places. [2025-02-06 18:55:29,721 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 138 transitions, 1828 flow [2025-02-06 18:55:29,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:29,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:29,722 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:29,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 18:55:29,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:29,926 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:29,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash -574701994, now seen corresponding path program 3 times [2025-02-06 18:55:29,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:29,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886100404] [2025-02-06 18:55:29,927 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:55:29,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:29,930 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:55:29,932 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:29,932 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:55:29,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:29,956 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 18:55:29,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:29,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886100404] [2025-02-06 18:55:29,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886100404] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:29,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:29,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:55:29,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364096126] [2025-02-06 18:55:29,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:29,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:29,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:29,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:29,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:55:29,958 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:29,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 138 transitions, 1828 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:29,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:29,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:29,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:30,189 INFO L124 PetriNetUnfolderBase]: 602/1158 cut-off events. [2025-02-06 18:55:30,189 INFO L125 PetriNetUnfolderBase]: For 8103/8103 co-relation queries the response was YES. [2025-02-06 18:55:30,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6064 conditions, 1158 events. 602/1158 cut-off events. For 8103/8103 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6467 event pairs, 148 based on Foata normal form. 12/1170 useless extension candidates. Maximal degree in co-relation 5841. Up to 431 conditions per place. [2025-02-06 18:55:30,198 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 150 selfloop transitions, 66 changer transitions 4/222 dead transitions. [2025-02-06 18:55:30,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 222 transitions, 3104 flow [2025-02-06 18:55:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:55:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:55:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2025-02-06 18:55:30,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-02-06 18:55:30,200 INFO L175 Difference]: Start difference. First operand has 108 places, 138 transitions, 1828 flow. Second operand 8 states and 152 transitions. [2025-02-06 18:55:30,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 222 transitions, 3104 flow [2025-02-06 18:55:30,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 222 transitions, 3056 flow, removed 19 selfloop flow, removed 2 redundant places. [2025-02-06 18:55:30,225 INFO L231 Difference]: Finished difference. Result has 117 places, 159 transitions, 2306 flow [2025-02-06 18:55:30,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2306, PETRI_PLACES=117, PETRI_TRANSITIONS=159} [2025-02-06 18:55:30,226 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 84 predicate places. [2025-02-06 18:55:30,226 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 159 transitions, 2306 flow [2025-02-06 18:55:30,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:30,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:30,226 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:30,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-06 18:55:30,227 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:30,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:30,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1599698645, now seen corresponding path program 1 times [2025-02-06 18:55:30,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:30,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445728337] [2025-02-06 18:55:30,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:30,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:30,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:55:30,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:30,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:30,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:30,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:30,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445728337] [2025-02-06 18:55:30,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445728337] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:30,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197661889] [2025-02-06 18:55:30,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:30,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:30,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:30,272 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 18:55:30,276 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 18:55:30,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:55:30,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:30,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:30,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:30,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:55:30,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:30,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:55:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:30,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197661889] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:30,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:55:30,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-02-06 18:55:30,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924283592] [2025-02-06 18:55:30,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:30,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:30,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:30,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-06 18:55:30,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:30,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 159 transitions, 2306 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:30,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:30,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:30,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:30,605 INFO L124 PetriNetUnfolderBase]: 723/1411 cut-off events. [2025-02-06 18:55:30,605 INFO L125 PetriNetUnfolderBase]: For 10814/10818 co-relation queries the response was YES. [2025-02-06 18:55:30,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7750 conditions, 1411 events. 723/1411 cut-off events. For 10814/10818 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8412 event pairs, 86 based on Foata normal form. 17/1428 useless extension candidates. Maximal degree in co-relation 7281. Up to 428 conditions per place. [2025-02-06 18:55:30,614 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 142 selfloop transitions, 86 changer transitions 2/232 dead transitions. [2025-02-06 18:55:30,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 232 transitions, 3582 flow [2025-02-06 18:55:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:55:30,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:55:30,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2025-02-06 18:55:30,616 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2025-02-06 18:55:30,616 INFO L175 Difference]: Start difference. First operand has 117 places, 159 transitions, 2306 flow. Second operand 6 states and 118 transitions. [2025-02-06 18:55:30,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 232 transitions, 3582 flow [2025-02-06 18:55:30,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 232 transitions, 3503 flow, removed 23 selfloop flow, removed 1 redundant places. [2025-02-06 18:55:30,647 INFO L231 Difference]: Finished difference. Result has 126 places, 183 transitions, 2893 flow [2025-02-06 18:55:30,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2893, PETRI_PLACES=126, PETRI_TRANSITIONS=183} [2025-02-06 18:55:30,648 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 93 predicate places. [2025-02-06 18:55:30,648 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 183 transitions, 2893 flow [2025-02-06 18:55:30,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:30,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:30,649 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:30,656 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 18:55:30,849 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,SelfDestructingSolverStorable26 [2025-02-06 18:55:30,849 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:30,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1432880647, now seen corresponding path program 2 times [2025-02-06 18:55:30,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:30,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384185828] [2025-02-06 18:55:30,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:55:30,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:30,856 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:30,858 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:30,860 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:55:30,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384185828] [2025-02-06 18:55:30,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384185828] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:30,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105594890] [2025-02-06 18:55:30,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:55:30,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:30,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:30,954 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 18:55:30,956 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 18:55:30,990 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:30,999 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:30,999 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:55:30,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:31,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:55:31,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:31,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:55:31,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105594890] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:31,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:55:31,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2025-02-06 18:55:31,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869934240] [2025-02-06 18:55:31,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:31,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:31,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:31,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:31,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:55:31,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:31,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 183 transitions, 2893 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:31,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:31,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:31,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:31,305 INFO L124 PetriNetUnfolderBase]: 693/1340 cut-off events. [2025-02-06 18:55:31,305 INFO L125 PetriNetUnfolderBase]: For 12827/12827 co-relation queries the response was YES. [2025-02-06 18:55:31,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7922 conditions, 1340 events. 693/1340 cut-off events. For 12827/12827 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7817 event pairs, 99 based on Foata normal form. 6/1346 useless extension candidates. Maximal degree in co-relation 7715. Up to 337 conditions per place. [2025-02-06 18:55:31,315 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 156 selfloop transitions, 62 changer transitions 7/227 dead transitions. [2025-02-06 18:55:31,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 227 transitions, 3718 flow [2025-02-06 18:55:31,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:55:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:55:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2025-02-06 18:55:31,316 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.546875 [2025-02-06 18:55:31,316 INFO L175 Difference]: Start difference. First operand has 126 places, 183 transitions, 2893 flow. Second operand 8 states and 140 transitions. [2025-02-06 18:55:31,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 227 transitions, 3718 flow [2025-02-06 18:55:31,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 227 transitions, 3663 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-02-06 18:55:31,354 INFO L231 Difference]: Finished difference. Result has 135 places, 186 transitions, 3072 flow [2025-02-06 18:55:31,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3072, PETRI_PLACES=135, PETRI_TRANSITIONS=186} [2025-02-06 18:55:31,357 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 102 predicate places. [2025-02-06 18:55:31,358 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 186 transitions, 3072 flow [2025-02-06 18:55:31,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:31,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:31,358 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:31,367 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 18:55:31,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-06 18:55:31,558 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:31,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:31,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2014898084, now seen corresponding path program 4 times [2025-02-06 18:55:31,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:31,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305538824] [2025-02-06 18:55:31,559 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:55:31,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:31,563 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:31,566 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:31,567 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:55:31,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:31,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:31,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305538824] [2025-02-06 18:55:31,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305538824] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:31,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:31,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:55:31,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775984425] [2025-02-06 18:55:31,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:31,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:31,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:31,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:31,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:55:31,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:31,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 186 transitions, 3072 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:31,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:31,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:31,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:31,866 INFO L124 PetriNetUnfolderBase]: 635/1219 cut-off events. [2025-02-06 18:55:31,867 INFO L125 PetriNetUnfolderBase]: For 13774/13774 co-relation queries the response was YES. [2025-02-06 18:55:31,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7470 conditions, 1219 events. 635/1219 cut-off events. For 13774/13774 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6842 event pairs, 191 based on Foata normal form. 7/1226 useless extension candidates. Maximal degree in co-relation 7130. Up to 625 conditions per place. [2025-02-06 18:55:31,876 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 163 selfloop transitions, 29 changer transitions 8/202 dead transitions. [2025-02-06 18:55:31,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 202 transitions, 3536 flow [2025-02-06 18:55:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:55:31,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:55:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2025-02-06 18:55:31,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55625 [2025-02-06 18:55:31,877 INFO L175 Difference]: Start difference. First operand has 135 places, 186 transitions, 3072 flow. Second operand 5 states and 89 transitions. [2025-02-06 18:55:31,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 202 transitions, 3536 flow [2025-02-06 18:55:31,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 202 transitions, 3475 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-02-06 18:55:31,916 INFO L231 Difference]: Finished difference. Result has 136 places, 178 transitions, 2930 flow [2025-02-06 18:55:31,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2910, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2930, PETRI_PLACES=136, PETRI_TRANSITIONS=178} [2025-02-06 18:55:31,918 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 103 predicate places. [2025-02-06 18:55:31,919 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 178 transitions, 2930 flow [2025-02-06 18:55:31,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:31,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:31,919 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:31,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-02-06 18:55:31,919 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:31,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash -500558388, now seen corresponding path program 5 times [2025-02-06 18:55:31,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:31,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897305635] [2025-02-06 18:55:31,920 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:55:31,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:31,926 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:31,928 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:31,928 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:55:31,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:31,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:31,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897305635] [2025-02-06 18:55:31,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897305635] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:31,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288892083] [2025-02-06 18:55:31,958 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:55:31,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:31,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:31,962 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 18:55:31,963 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 18:55:31,988 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:31,997 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:31,998 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:55:31,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:31,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:55:31,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:32,011 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:55:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:32,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288892083] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:32,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:55:32,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-02-06 18:55:32,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203150906] [2025-02-06 18:55:32,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:32,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:32,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:32,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:32,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-06 18:55:32,046 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:32,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 178 transitions, 2930 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:32,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:32,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:32,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:32,274 INFO L124 PetriNetUnfolderBase]: 641/1262 cut-off events. [2025-02-06 18:55:32,274 INFO L125 PetriNetUnfolderBase]: For 14235/14235 co-relation queries the response was YES. [2025-02-06 18:55:32,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7566 conditions, 1262 events. 641/1262 cut-off events. For 14235/14235 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7211 event pairs, 81 based on Foata normal form. 12/1274 useless extension candidates. Maximal degree in co-relation 7333. Up to 348 conditions per place. [2025-02-06 18:55:32,284 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 138 selfloop transitions, 99 changer transitions 5/244 dead transitions. [2025-02-06 18:55:32,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 244 transitions, 4200 flow [2025-02-06 18:55:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:55:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:55:32,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2025-02-06 18:55:32,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2025-02-06 18:55:32,285 INFO L175 Difference]: Start difference. First operand has 136 places, 178 transitions, 2930 flow. Second operand 6 states and 118 transitions. [2025-02-06 18:55:32,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 244 transitions, 4200 flow [2025-02-06 18:55:32,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 244 transitions, 4130 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-06 18:55:32,361 INFO L231 Difference]: Finished difference. Result has 137 places, 201 transitions, 3571 flow [2025-02-06 18:55:32,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2750, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3571, PETRI_PLACES=137, PETRI_TRANSITIONS=201} [2025-02-06 18:55:32,362 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 104 predicate places. [2025-02-06 18:55:32,362 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 201 transitions, 3571 flow [2025-02-06 18:55:32,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:32,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:32,362 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:32,370 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 18:55:32,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:32,562 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:32,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:32,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1997905759, now seen corresponding path program 3 times [2025-02-06 18:55:32,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:32,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346619427] [2025-02-06 18:55:32,563 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:55:32,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:32,567 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:32,569 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:32,569 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 18:55:32,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:32,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:32,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346619427] [2025-02-06 18:55:32,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346619427] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:32,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308042319] [2025-02-06 18:55:32,644 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:55:32,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:32,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:32,647 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 18:55:32,649 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 18:55:32,678 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:32,687 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:32,687 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 18:55:32,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:32,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:55:32,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:32,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:55:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:32,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308042319] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:32,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:55:32,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 13 [2025-02-06 18:55:32,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683744415] [2025-02-06 18:55:32,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:32,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:32,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:32,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:32,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-02-06 18:55:32,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:32,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 201 transitions, 3571 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:32,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:32,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:32,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:33,036 INFO L124 PetriNetUnfolderBase]: 561/1113 cut-off events. [2025-02-06 18:55:33,037 INFO L125 PetriNetUnfolderBase]: For 15201/15201 co-relation queries the response was YES. [2025-02-06 18:55:33,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7146 conditions, 1113 events. 561/1113 cut-off events. For 15201/15201 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6187 event pairs, 106 based on Foata normal form. 13/1125 useless extension candidates. Maximal degree in co-relation 6840. Up to 408 conditions per place. [2025-02-06 18:55:33,047 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 153 selfloop transitions, 75 changer transitions 1/231 dead transitions. [2025-02-06 18:55:33,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 231 transitions, 4243 flow [2025-02-06 18:55:33,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:55:33,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:55:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2025-02-06 18:55:33,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-02-06 18:55:33,048 INFO L175 Difference]: Start difference. First operand has 137 places, 201 transitions, 3571 flow. Second operand 6 states and 117 transitions. [2025-02-06 18:55:33,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 231 transitions, 4243 flow [2025-02-06 18:55:33,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 231 transitions, 4180 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-02-06 18:55:33,093 INFO L231 Difference]: Finished difference. Result has 141 places, 197 transitions, 3724 flow [2025-02-06 18:55:33,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3308, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3724, PETRI_PLACES=141, PETRI_TRANSITIONS=197} [2025-02-06 18:55:33,095 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 108 predicate places. [2025-02-06 18:55:33,095 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 197 transitions, 3724 flow [2025-02-06 18:55:33,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:33,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:33,095 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:33,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 18:55:33,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:33,300 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:33,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:33,300 INFO L85 PathProgramCache]: Analyzing trace with hash -157342505, now seen corresponding path program 4 times [2025-02-06 18:55:33,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:33,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243173110] [2025-02-06 18:55:33,301 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:55:33,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:33,305 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:33,307 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:33,307 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:55:33,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:33,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:33,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243173110] [2025-02-06 18:55:33,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243173110] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:33,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:33,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:55:33,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718307781] [2025-02-06 18:55:33,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:33,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:33,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:33,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:33,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:55:33,340 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:33,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 197 transitions, 3724 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:33,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:33,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:33,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:33,557 INFO L124 PetriNetUnfolderBase]: 552/1097 cut-off events. [2025-02-06 18:55:33,557 INFO L125 PetriNetUnfolderBase]: For 17467/17467 co-relation queries the response was YES. [2025-02-06 18:55:33,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7347 conditions, 1097 events. 552/1097 cut-off events. For 17467/17467 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6104 event pairs, 91 based on Foata normal form. 10/1106 useless extension candidates. Maximal degree in co-relation 6890. Up to 375 conditions per place. [2025-02-06 18:55:33,562 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 176 selfloop transitions, 36 changer transitions 5/219 dead transitions. [2025-02-06 18:55:33,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 219 transitions, 4323 flow [2025-02-06 18:55:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:55:33,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:55:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2025-02-06 18:55:33,564 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2025-02-06 18:55:33,564 INFO L175 Difference]: Start difference. First operand has 141 places, 197 transitions, 3724 flow. Second operand 7 states and 115 transitions. [2025-02-06 18:55:33,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 219 transitions, 4323 flow [2025-02-06 18:55:33,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 219 transitions, 4268 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-02-06 18:55:33,592 INFO L231 Difference]: Finished difference. Result has 147 places, 193 transitions, 3663 flow [2025-02-06 18:55:33,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3651, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3663, PETRI_PLACES=147, PETRI_TRANSITIONS=193} [2025-02-06 18:55:33,593 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 114 predicate places. [2025-02-06 18:55:33,593 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 193 transitions, 3663 flow [2025-02-06 18:55:33,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:33,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:33,593 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:33,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-02-06 18:55:33,593 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:33,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1831087761, now seen corresponding path program 5 times [2025-02-06 18:55:33,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:33,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972144924] [2025-02-06 18:55:33,594 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:55:33,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:33,597 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:33,598 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:33,598 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:55:33,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:33,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:33,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972144924] [2025-02-06 18:55:33,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972144924] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:33,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:33,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:55:33,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646542967] [2025-02-06 18:55:33,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:33,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:33,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:33,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:33,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:55:33,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:33,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 193 transitions, 3663 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:33,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:33,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:33,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:33,807 INFO L124 PetriNetUnfolderBase]: 493/965 cut-off events. [2025-02-06 18:55:33,807 INFO L125 PetriNetUnfolderBase]: For 16207/16207 co-relation queries the response was YES. [2025-02-06 18:55:33,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6601 conditions, 965 events. 493/965 cut-off events. For 16207/16207 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5102 event pairs, 79 based on Foata normal form. 6/970 useless extension candidates. Maximal degree in co-relation 6281. Up to 338 conditions per place. [2025-02-06 18:55:33,813 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 140 selfloop transitions, 55 changer transitions 3/200 dead transitions. [2025-02-06 18:55:33,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 200 transitions, 3935 flow [2025-02-06 18:55:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:55:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:55:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2025-02-06 18:55:33,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49609375 [2025-02-06 18:55:33,814 INFO L175 Difference]: Start difference. First operand has 147 places, 193 transitions, 3663 flow. Second operand 8 states and 127 transitions. [2025-02-06 18:55:33,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 200 transitions, 3935 flow [2025-02-06 18:55:33,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 200 transitions, 3788 flow, removed 7 selfloop flow, removed 4 redundant places. [2025-02-06 18:55:33,841 INFO L231 Difference]: Finished difference. Result has 149 places, 179 transitions, 3380 flow [2025-02-06 18:55:33,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3380, PETRI_PLACES=149, PETRI_TRANSITIONS=179} [2025-02-06 18:55:33,841 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 116 predicate places. [2025-02-06 18:55:33,841 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 179 transitions, 3380 flow [2025-02-06 18:55:33,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:33,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:33,841 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:33,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-02-06 18:55:33,842 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:33,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1616690970, now seen corresponding path program 6 times [2025-02-06 18:55:33,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:33,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949041601] [2025-02-06 18:55:33,842 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 18:55:33,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:33,845 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:33,848 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:33,848 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 18:55:33,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:33,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:33,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949041601] [2025-02-06 18:55:33,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949041601] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:33,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707818085] [2025-02-06 18:55:33,917 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 18:55:33,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:33,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:33,920 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 18:55:33,922 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 18:55:33,948 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:55:33,957 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:55:33,958 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 18:55:33,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:33,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:55:33,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:33,990 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:55:33,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707818085] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:33,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:55:33,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2025-02-06 18:55:33,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328032263] [2025-02-06 18:55:33,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:33,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:55:33,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:33,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:55:33,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:55:33,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:33,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 179 transitions, 3380 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:33,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:33,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:33,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:34,189 INFO L124 PetriNetUnfolderBase]: 442/866 cut-off events. [2025-02-06 18:55:34,189 INFO L125 PetriNetUnfolderBase]: For 15004/15004 co-relation queries the response was YES. [2025-02-06 18:55:34,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5968 conditions, 866 events. 442/866 cut-off events. For 15004/15004 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4425 event pairs, 69 based on Foata normal form. 7/872 useless extension candidates. Maximal degree in co-relation 5887. Up to 287 conditions per place. [2025-02-06 18:55:34,193 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 125 selfloop transitions, 50 changer transitions 5/182 dead transitions. [2025-02-06 18:55:34,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 182 transitions, 3578 flow [2025-02-06 18:55:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:55:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:55:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2025-02-06 18:55:34,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48660714285714285 [2025-02-06 18:55:34,194 INFO L175 Difference]: Start difference. First operand has 149 places, 179 transitions, 3380 flow. Second operand 7 states and 109 transitions. [2025-02-06 18:55:34,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 182 transitions, 3578 flow [2025-02-06 18:55:34,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 182 transitions, 3443 flow, removed 11 selfloop flow, removed 10 redundant places. [2025-02-06 18:55:34,220 INFO L231 Difference]: Finished difference. Result has 142 places, 165 transitions, 3111 flow [2025-02-06 18:55:34,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2944, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3111, PETRI_PLACES=142, PETRI_TRANSITIONS=165} [2025-02-06 18:55:34,220 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 109 predicate places. [2025-02-06 18:55:34,221 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 165 transitions, 3111 flow [2025-02-06 18:55:34,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 18:55:34,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:34,221 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:34,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 18:55:34,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:34,421 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:34,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:34,422 INFO L85 PathProgramCache]: Analyzing trace with hash 256305277, now seen corresponding path program 1 times [2025-02-06 18:55:34,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:34,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430508393] [2025-02-06 18:55:34,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:34,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:34,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:55:34,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:34,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:34,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:34,527 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 18:55:34,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:34,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430508393] [2025-02-06 18:55:34,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430508393] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:34,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139028374] [2025-02-06 18:55:34,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:34,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:34,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:34,529 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:55:34,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 18:55:34,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:55:34,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:34,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:34,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:34,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:55:34,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:34,733 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 18:55:34,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:55:34,870 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 18:55:34,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139028374] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:55:34,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:55:34,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-02-06 18:55:34,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8543108] [2025-02-06 18:55:34,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:55:34,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 18:55:34,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:34,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 18:55:34,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2025-02-06 18:55:35,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2025-02-06 18:55:35,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 165 transitions, 3111 flow. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 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 18:55:35,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:35,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2025-02-06 18:55:35,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:37,291 INFO L124 PetriNetUnfolderBase]: 1153/2275 cut-off events. [2025-02-06 18:55:37,292 INFO L125 PetriNetUnfolderBase]: For 37296/37316 co-relation queries the response was YES. [2025-02-06 18:55:37,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15701 conditions, 2275 events. 1153/2275 cut-off events. For 37296/37316 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14916 event pairs, 54 based on Foata normal form. 68/2337 useless extension candidates. Maximal degree in co-relation 15083. Up to 440 conditions per place. [2025-02-06 18:55:37,305 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 180 selfloop transitions, 357 changer transitions 7/554 dead transitions. [2025-02-06 18:55:37,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 554 transitions, 9613 flow [2025-02-06 18:55:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-02-06 18:55:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2025-02-06 18:55:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 717 transitions. [2025-02-06 18:55:37,307 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2948190789473684 [2025-02-06 18:55:37,308 INFO L175 Difference]: Start difference. First operand has 142 places, 165 transitions, 3111 flow. Second operand 76 states and 717 transitions. [2025-02-06 18:55:37,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 554 transitions, 9613 flow [2025-02-06 18:55:37,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 554 transitions, 9384 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-06 18:55:37,402 INFO L231 Difference]: Finished difference. Result has 217 places, 412 transitions, 8561 flow [2025-02-06 18:55:37,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3006, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=8561, PETRI_PLACES=217, PETRI_TRANSITIONS=412} [2025-02-06 18:55:37,402 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 184 predicate places. [2025-02-06 18:55:37,403 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 412 transitions, 8561 flow [2025-02-06 18:55:37,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 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 18:55:37,403 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:37,403 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:37,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 18:55:37,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:37,604 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:37,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1715565361, now seen corresponding path program 1 times [2025-02-06 18:55:37,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:37,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957352796] [2025-02-06 18:55:37,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:37,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:37,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:55:37,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:37,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:37,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:37,727 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 18:55:37,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957352796] [2025-02-06 18:55:37,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957352796] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634090221] [2025-02-06 18:55:37,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:37,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:37,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:37,729 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:55:37,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 18:55:37,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:55:37,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:37,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:37,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:37,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:55:37,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:37,928 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 18:55:37,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:55:38,037 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 18:55:38,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634090221] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:55:38,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:55:38,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-02-06 18:55:38,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962778780] [2025-02-06 18:55:38,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:55:38,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 18:55:38,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:38,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 18:55:38,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2025-02-06 18:55:38,138 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2025-02-06 18:55:38,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 412 transitions, 8561 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 18:55:38,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:38,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2025-02-06 18:55:38,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:40,053 INFO L124 PetriNetUnfolderBase]: 1328/2592 cut-off events. [2025-02-06 18:55:40,053 INFO L125 PetriNetUnfolderBase]: For 44201/44201 co-relation queries the response was YES. [2025-02-06 18:55:40,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18663 conditions, 2592 events. 1328/2592 cut-off events. For 44201/44201 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16887 event pairs, 106 based on Foata normal form. 56/2648 useless extension candidates. Maximal degree in co-relation 18062. Up to 682 conditions per place. [2025-02-06 18:55:40,074 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 329 changer transitions 18/557 dead transitions. [2025-02-06 18:55:40,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 557 transitions, 10981 flow [2025-02-06 18:55:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-02-06 18:55:40,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2025-02-06 18:55:40,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 521 transitions. [2025-02-06 18:55:40,076 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29602272727272727 [2025-02-06 18:55:40,076 INFO L175 Difference]: Start difference. First operand has 217 places, 412 transitions, 8561 flow. Second operand 55 states and 521 transitions. [2025-02-06 18:55:40,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 557 transitions, 10981 flow [2025-02-06 18:55:40,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 557 transitions, 10022 flow, removed 135 selfloop flow, removed 9 redundant places. [2025-02-06 18:55:40,189 INFO L231 Difference]: Finished difference. Result has 268 places, 423 transitions, 8638 flow [2025-02-06 18:55:40,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7630, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=8638, PETRI_PLACES=268, PETRI_TRANSITIONS=423} [2025-02-06 18:55:40,190 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 235 predicate places. [2025-02-06 18:55:40,190 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 423 transitions, 8638 flow [2025-02-06 18:55:40,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 18:55:40,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:40,190 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:40,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 18:55:40,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-02-06 18:55:40,391 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:40,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:40,391 INFO L85 PathProgramCache]: Analyzing trace with hash -935700865, now seen corresponding path program 2 times [2025-02-06 18:55:40,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:40,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893362014] [2025-02-06 18:55:40,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:55:40,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:40,394 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:55:40,396 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:40,396 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:55:40,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:40,490 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 18:55:40,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:40,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893362014] [2025-02-06 18:55:40,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893362014] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:40,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:40,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:55:40,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178628234] [2025-02-06 18:55:40,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:40,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:55:40,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:40,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:55:40,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:55:40,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:40,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 423 transitions, 8638 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 18:55:40,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:40,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:40,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:41,083 INFO L124 PetriNetUnfolderBase]: 1341/2664 cut-off events. [2025-02-06 18:55:41,083 INFO L125 PetriNetUnfolderBase]: For 45276/45276 co-relation queries the response was YES. [2025-02-06 18:55:41,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19699 conditions, 2664 events. 1341/2664 cut-off events. For 45276/45276 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17914 event pairs, 207 based on Foata normal form. 16/2665 useless extension candidates. Maximal degree in co-relation 19193. Up to 1395 conditions per place. [2025-02-06 18:55:41,100 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 187 selfloop transitions, 287 changer transitions 3/509 dead transitions. [2025-02-06 18:55:41,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 509 transitions, 11031 flow [2025-02-06 18:55:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 18:55:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 18:55:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 225 transitions. [2025-02-06 18:55:41,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.439453125 [2025-02-06 18:55:41,101 INFO L175 Difference]: Start difference. First operand has 268 places, 423 transitions, 8638 flow. Second operand 16 states and 225 transitions. [2025-02-06 18:55:41,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 509 transitions, 11031 flow [2025-02-06 18:55:41,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 509 transitions, 10625 flow, removed 17 selfloop flow, removed 30 redundant places. [2025-02-06 18:55:41,275 INFO L231 Difference]: Finished difference. Result has 258 places, 475 transitions, 10146 flow [2025-02-06 18:55:41,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8273, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10146, PETRI_PLACES=258, PETRI_TRANSITIONS=475} [2025-02-06 18:55:41,276 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 225 predicate places. [2025-02-06 18:55:41,276 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 475 transitions, 10146 flow [2025-02-06 18:55:41,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 18:55:41,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:41,276 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:41,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-02-06 18:55:41,276 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:41,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:41,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1790871857, now seen corresponding path program 3 times [2025-02-06 18:55:41,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:41,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28141371] [2025-02-06 18:55:41,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:55:41,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:41,279 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:55:41,281 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:41,281 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:55:41,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:41,371 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 18:55:41,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:41,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28141371] [2025-02-06 18:55:41,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28141371] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:41,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:41,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:55:41,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968491466] [2025-02-06 18:55:41,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:41,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:55:41,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:41,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:55:41,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:55:41,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:41,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 475 transitions, 10146 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 18:55:41,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:41,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:41,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:42,062 INFO L124 PetriNetUnfolderBase]: 1410/2802 cut-off events. [2025-02-06 18:55:42,062 INFO L125 PetriNetUnfolderBase]: For 51699/51699 co-relation queries the response was YES. [2025-02-06 18:55:42,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21489 conditions, 2802 events. 1410/2802 cut-off events. For 51699/51699 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 19011 event pairs, 222 based on Foata normal form. 16/2803 useless extension candidates. Maximal degree in co-relation 20973. Up to 1449 conditions per place. [2025-02-06 18:55:42,079 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 196 selfloop transitions, 304 changer transitions 3/535 dead transitions. [2025-02-06 18:55:42,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 535 transitions, 12127 flow [2025-02-06 18:55:42,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:55:42,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:55:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 197 transitions. [2025-02-06 18:55:42,080 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43973214285714285 [2025-02-06 18:55:42,080 INFO L175 Difference]: Start difference. First operand has 258 places, 475 transitions, 10146 flow. Second operand 14 states and 197 transitions. [2025-02-06 18:55:42,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 535 transitions, 12127 flow [2025-02-06 18:55:42,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 535 transitions, 11950 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-02-06 18:55:42,263 INFO L231 Difference]: Finished difference. Result has 272 places, 503 transitions, 11468 flow [2025-02-06 18:55:42,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9981, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11468, PETRI_PLACES=272, PETRI_TRANSITIONS=503} [2025-02-06 18:55:42,263 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 239 predicate places. [2025-02-06 18:55:42,263 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 503 transitions, 11468 flow [2025-02-06 18:55:42,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 18:55:42,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:42,263 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:42,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-02-06 18:55:42,264 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:42,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:42,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1379888849, now seen corresponding path program 4 times [2025-02-06 18:55:42,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:42,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476807707] [2025-02-06 18:55:42,264 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:55:42,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:42,266 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:55:42,268 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:42,268 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:55:42,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:42,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:42,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476807707] [2025-02-06 18:55:42,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476807707] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:42,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993612679] [2025-02-06 18:55:42,402 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:55:42,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:42,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:42,404 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:55:42,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 18:55:42,433 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:55:42,444 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:42,445 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:55:42,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:42,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:55:42,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:42,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:55:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:42,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993612679] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:55:42,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:55:42,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-02-06 18:55:42,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609933148] [2025-02-06 18:55:42,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:55:42,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 18:55:42,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:42,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 18:55:42,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2025-02-06 18:55:42,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2025-02-06 18:55:42,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 503 transitions, 11468 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 18:55:42,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:42,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2025-02-06 18:55:42,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:44,807 INFO L124 PetriNetUnfolderBase]: 3531/6695 cut-off events. [2025-02-06 18:55:44,808 INFO L125 PetriNetUnfolderBase]: For 131632/131632 co-relation queries the response was YES. [2025-02-06 18:55:44,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52642 conditions, 6695 events. 3531/6695 cut-off events. For 131632/131632 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 50684 event pairs, 243 based on Foata normal form. 48/6743 useless extension candidates. Maximal degree in co-relation 52179. Up to 1327 conditions per place. [2025-02-06 18:55:44,915 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 394 selfloop transitions, 907 changer transitions 13/1316 dead transitions. [2025-02-06 18:55:44,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 1316 transitions, 30790 flow [2025-02-06 18:55:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-02-06 18:55:44,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2025-02-06 18:55:44,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 525 transitions. [2025-02-06 18:55:44,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29296875 [2025-02-06 18:55:44,916 INFO L175 Difference]: Start difference. First operand has 272 places, 503 transitions, 11468 flow. Second operand 56 states and 525 transitions. [2025-02-06 18:55:44,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 1316 transitions, 30790 flow [2025-02-06 18:55:45,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1316 transitions, 30431 flow, removed 17 selfloop flow, removed 6 redundant places. [2025-02-06 18:55:45,788 INFO L231 Difference]: Finished difference. Result has 343 places, 1098 transitions, 27971 flow [2025-02-06 18:55:45,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=11245, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=27971, PETRI_PLACES=343, PETRI_TRANSITIONS=1098} [2025-02-06 18:55:45,790 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 310 predicate places. [2025-02-06 18:55:45,790 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 1098 transitions, 27971 flow [2025-02-06 18:55:45,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 18:55:45,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:45,790 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:45,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-06 18:55:45,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-06 18:55:45,991 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:45,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:45,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1790872187, now seen corresponding path program 2 times [2025-02-06 18:55:45,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:45,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099387644] [2025-02-06 18:55:45,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:55:45,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:45,995 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:55:46,003 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:46,003 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:55:46,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:46,111 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 18:55:46,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099387644] [2025-02-06 18:55:46,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099387644] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:46,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:55:46,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:55:46,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845449918] [2025-02-06 18:55:46,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:46,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:55:46,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:46,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:55:46,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:55:46,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-06 18:55:46,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 1098 transitions, 27971 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 18:55:46,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:46,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-06 18:55:46,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:47,952 INFO L124 PetriNetUnfolderBase]: 3288/6453 cut-off events. [2025-02-06 18:55:47,952 INFO L125 PetriNetUnfolderBase]: For 170637/170685 co-relation queries the response was YES. [2025-02-06 18:55:47,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55943 conditions, 6453 events. 3288/6453 cut-off events. For 170637/170685 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 50546 event pairs, 580 based on Foata normal form. 26/6469 useless extension candidates. Maximal degree in co-relation 55501. Up to 3386 conditions per place. [2025-02-06 18:55:48,008 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 534 selfloop transitions, 551 changer transitions 4/1124 dead transitions. [2025-02-06 18:55:48,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 1124 transitions, 30420 flow [2025-02-06 18:55:48,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:55:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:55:48,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 185 transitions. [2025-02-06 18:55:48,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44471153846153844 [2025-02-06 18:55:48,009 INFO L175 Difference]: Start difference. First operand has 343 places, 1098 transitions, 27971 flow. Second operand 13 states and 185 transitions. [2025-02-06 18:55:48,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 1124 transitions, 30420 flow [2025-02-06 18:55:49,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1124 transitions, 29739 flow, removed 277 selfloop flow, removed 4 redundant places. [2025-02-06 18:55:49,257 INFO L231 Difference]: Finished difference. Result has 354 places, 1103 transitions, 28971 flow [2025-02-06 18:55:49,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=27290, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1098, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=543, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=28971, PETRI_PLACES=354, PETRI_TRANSITIONS=1103} [2025-02-06 18:55:49,258 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 321 predicate places. [2025-02-06 18:55:49,258 INFO L471 AbstractCegarLoop]: Abstraction has has 354 places, 1103 transitions, 28971 flow [2025-02-06 18:55:49,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 18:55:49,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:49,258 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:49,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-02-06 18:55:49,259 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:49,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:49,259 INFO L85 PathProgramCache]: Analyzing trace with hash 918406709, now seen corresponding path program 3 times [2025-02-06 18:55:49,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:49,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291430349] [2025-02-06 18:55:49,259 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:55:49,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:49,262 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:55:49,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:49,264 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 18:55:49,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:49,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:49,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291430349] [2025-02-06 18:55:49,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291430349] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:49,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078735069] [2025-02-06 18:55:49,449 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:55:49,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:49,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:49,451 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:55:49,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 18:55:49,479 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:55:49,489 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:49,489 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 18:55:49,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:49,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:55:49,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:49,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:55:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:49,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078735069] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:55:49,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:55:49,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-02-06 18:55:49,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758787570] [2025-02-06 18:55:49,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:55:49,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 18:55:49,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:49,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 18:55:49,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2025-02-06 18:55:49,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2025-02-06 18:55:49,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 1103 transitions, 28971 flow. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 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 18:55:49,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:49,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2025-02-06 18:55:49,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:53,195 INFO L124 PetriNetUnfolderBase]: 4737/9444 cut-off events. [2025-02-06 18:55:53,196 INFO L125 PetriNetUnfolderBase]: For 258101/258202 co-relation queries the response was YES. [2025-02-06 18:55:53,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82527 conditions, 9444 events. 4737/9444 cut-off events. For 258101/258202 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 78523 event pairs, 421 based on Foata normal form. 171/9609 useless extension candidates. Maximal degree in co-relation 81958. Up to 2154 conditions per place. [2025-02-06 18:55:53,323 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 404 selfloop transitions, 1226 changer transitions 16/1681 dead transitions. [2025-02-06 18:55:53,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1681 transitions, 46046 flow [2025-02-06 18:55:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-06 18:55:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-06 18:55:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 363 transitions. [2025-02-06 18:55:53,324 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3336397058823529 [2025-02-06 18:55:53,324 INFO L175 Difference]: Start difference. First operand has 354 places, 1103 transitions, 28971 flow. Second operand 34 states and 363 transitions. [2025-02-06 18:55:53,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1681 transitions, 46046 flow [2025-02-06 18:55:56,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1681 transitions, 44710 flow, removed 16 selfloop flow, removed 9 redundant places. [2025-02-06 18:55:56,044 INFO L231 Difference]: Finished difference. Result has 390 places, 1553 transitions, 43618 flow [2025-02-06 18:55:56,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=27989, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=796, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=43618, PETRI_PLACES=390, PETRI_TRANSITIONS=1553} [2025-02-06 18:55:56,047 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 357 predicate places. [2025-02-06 18:55:56,047 INFO L471 AbstractCegarLoop]: Abstraction has has 390 places, 1553 transitions, 43618 flow [2025-02-06 18:55:56,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 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 18:55:56,048 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:56,048 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:56,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 18:55:56,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:56,252 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:55:56,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:56,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1574735221, now seen corresponding path program 4 times [2025-02-06 18:55:56,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:56,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074399878] [2025-02-06 18:55:56,253 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:55:56,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:56,255 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:55:56,257 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:56,257 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:55:56,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:56,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:56,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074399878] [2025-02-06 18:55:56,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074399878] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:56,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318434452] [2025-02-06 18:55:56,358 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:55:56,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:56,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:56,360 INFO L229 MonitoredProcess]: Starting monitored process 14 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 18:55:56,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 18:55:56,389 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:55:56,401 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:55:56,401 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:55:56,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:56,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:55:56,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:56,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:55:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:55:56,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318434452] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:55:56,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:55:56,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-02-06 18:55:56,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976351459] [2025-02-06 18:55:56,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:55:56,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 18:55:56,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:56,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 18:55:56,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2025-02-06 18:55:56,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2025-02-06 18:55:56,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 1553 transitions, 43618 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 18:55:56,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:56,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2025-02-06 18:55:56,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:03,585 INFO L124 PetriNetUnfolderBase]: 8771/17089 cut-off events. [2025-02-06 18:56:03,585 INFO L125 PetriNetUnfolderBase]: For 468433/468437 co-relation queries the response was YES. [2025-02-06 18:56:03,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149475 conditions, 17089 events. 8771/17089 cut-off events. For 468433/468437 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 151189 event pairs, 671 based on Foata normal form. 184/17273 useless extension candidates. Maximal degree in co-relation 148976. Up to 3349 conditions per place. [2025-02-06 18:56:03,741 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 701 selfloop transitions, 2004 changer transitions 48/2755 dead transitions. [2025-02-06 18:56:03,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 2755 transitions, 79419 flow [2025-02-06 18:56:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-02-06 18:56:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2025-02-06 18:56:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 654 transitions. [2025-02-06 18:56:03,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29196428571428573 [2025-02-06 18:56:03,743 INFO L175 Difference]: Start difference. First operand has 390 places, 1553 transitions, 43618 flow. Second operand 70 states and 654 transitions. [2025-02-06 18:56:03,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 2755 transitions, 79419 flow [2025-02-06 18:56:11,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 2755 transitions, 77834 flow, removed 113 selfloop flow, removed 8 redundant places. [2025-02-06 18:56:11,778 INFO L231 Difference]: Finished difference. Result has 473 places, 2432 transitions, 73318 flow [2025-02-06 18:56:11,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=42523, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=73318, PETRI_PLACES=473, PETRI_TRANSITIONS=2432} [2025-02-06 18:56:11,781 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 440 predicate places. [2025-02-06 18:56:11,781 INFO L471 AbstractCegarLoop]: Abstraction has has 473 places, 2432 transitions, 73318 flow [2025-02-06 18:56:11,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 18:56:11,781 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:11,781 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:11,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 18:56:11,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:11,982 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:56:11,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:11,983 INFO L85 PathProgramCache]: Analyzing trace with hash -804247677, now seen corresponding path program 5 times [2025-02-06 18:56:11,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:11,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605703984] [2025-02-06 18:56:11,983 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:56:11,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:11,985 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:56:11,987 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:56:11,987 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:56:11,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:12,077 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 18:56:12,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:12,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605703984] [2025-02-06 18:56:12,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605703984] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:56:12,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721522017] [2025-02-06 18:56:12,077 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:56:12,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:12,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:56:12,081 INFO L229 MonitoredProcess]: Starting monitored process 15 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 18:56:12,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 18:56:12,107 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:56:12,119 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:56:12,119 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:56:12,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:12,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 18:56:12,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:56:12,211 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 18:56:12,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:56:12,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721522017] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:56:12,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:56:12,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2025-02-06 18:56:12,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352843307] [2025-02-06 18:56:12,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:56:12,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:56:12,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:12,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:56:12,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2025-02-06 18:56:12,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2025-02-06 18:56:12,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 2432 transitions, 73318 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:56:12,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:12,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2025-02-06 18:56:12,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:19,105 INFO L124 PetriNetUnfolderBase]: 7413/15622 cut-off events. [2025-02-06 18:56:19,105 INFO L125 PetriNetUnfolderBase]: For 576732/576780 co-relation queries the response was YES. [2025-02-06 18:56:19,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155208 conditions, 15622 events. 7413/15622 cut-off events. For 576732/576780 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 148369 event pairs, 892 based on Foata normal form. 186/15672 useless extension candidates. Maximal degree in co-relation 154607. Up to 5031 conditions per place. [2025-02-06 18:56:19,586 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 423 selfloop transitions, 2059 changer transitions 42/2609 dead transitions. [2025-02-06 18:56:19,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 2609 transitions, 83444 flow [2025-02-06 18:56:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 18:56:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 18:56:19,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2025-02-06 18:56:19,587 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2025-02-06 18:56:19,587 INFO L175 Difference]: Start difference. First operand has 473 places, 2432 transitions, 73318 flow. Second operand 11 states and 135 transitions. [2025-02-06 18:56:19,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 2609 transitions, 83444 flow [2025-02-06 18:56:29,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 2609 transitions, 82267 flow, removed 288 selfloop flow, removed 13 redundant places. [2025-02-06 18:56:29,716 INFO L231 Difference]: Finished difference. Result has 470 places, 2525 transitions, 79801 flow [2025-02-06 18:56:29,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=72167, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1927, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=79801, PETRI_PLACES=470, PETRI_TRANSITIONS=2525} [2025-02-06 18:56:29,719 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 437 predicate places. [2025-02-06 18:56:29,720 INFO L471 AbstractCegarLoop]: Abstraction has has 470 places, 2525 transitions, 79801 flow [2025-02-06 18:56:29,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:56:29,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:29,720 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:29,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 18:56:29,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-02-06 18:56:29,921 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:56:29,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:29,921 INFO L85 PathProgramCache]: Analyzing trace with hash -22200585, now seen corresponding path program 6 times [2025-02-06 18:56:29,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:29,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723448425] [2025-02-06 18:56:29,921 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 18:56:29,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:29,923 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:56:29,925 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:56:29,925 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 18:56:29,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:30,010 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 18:56:30,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:30,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723448425] [2025-02-06 18:56:30,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723448425] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:56:30,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:56:30,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:56:30,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728410183] [2025-02-06 18:56:30,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:56:30,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:56:30,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:30,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:56:30,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:56:30,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-06 18:56:30,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 2525 transitions, 79801 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 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 18:56:30,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:30,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-06 18:56:30,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:39,308 INFO L124 PetriNetUnfolderBase]: 7957/16242 cut-off events. [2025-02-06 18:56:39,308 INFO L125 PetriNetUnfolderBase]: For 578828/578828 co-relation queries the response was YES. [2025-02-06 18:56:39,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158877 conditions, 16242 events. 7957/16242 cut-off events. For 578828/578828 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 149478 event pairs, 1195 based on Foata normal form. 4/16216 useless extension candidates. Maximal degree in co-relation 158361. Up to 9041 conditions per place. [2025-02-06 18:56:39,467 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 1304 selfloop transitions, 1220 changer transitions 3/2560 dead transitions. [2025-02-06 18:56:39,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 2560 transitions, 85297 flow [2025-02-06 18:56:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:56:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:56:39,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 217 transitions. [2025-02-06 18:56:39,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39889705882352944 [2025-02-06 18:56:39,468 INFO L175 Difference]: Start difference. First operand has 470 places, 2525 transitions, 79801 flow. Second operand 17 states and 217 transitions. [2025-02-06 18:56:39,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 2560 transitions, 85297 flow [2025-02-06 18:56:48,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 2560 transitions, 83811 flow, removed 45 selfloop flow, removed 7 redundant places. [2025-02-06 18:56:49,027 INFO L231 Difference]: Finished difference. Result has 482 places, 2529 transitions, 80975 flow [2025-02-06 18:56:49,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78324, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=80975, PETRI_PLACES=482, PETRI_TRANSITIONS=2529} [2025-02-06 18:56:49,029 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 449 predicate places. [2025-02-06 18:56:49,029 INFO L471 AbstractCegarLoop]: Abstraction has has 482 places, 2529 transitions, 80975 flow [2025-02-06 18:56:49,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 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 18:56:49,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:49,029 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:49,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2025-02-06 18:56:49,030 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:56:49,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:49,030 INFO L85 PathProgramCache]: Analyzing trace with hash 599626223, now seen corresponding path program 5 times [2025-02-06 18:56:49,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:49,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576534693] [2025-02-06 18:56:49,030 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:56:49,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:49,032 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:56:49,034 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:56:49,034 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:56:49,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:49,127 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 18:56:49,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:49,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576534693] [2025-02-06 18:56:49,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576534693] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:56:49,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:56:49,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:56:49,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492004091] [2025-02-06 18:56:49,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:56:49,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:56:49,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:49,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:56:49,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:56:49,193 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-06 18:56:49,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 2529 transitions, 80975 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 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 18:56:49,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:49,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-06 18:56:49,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand