./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5babed9169ff1f82a919f6310b42a42108866edd5cf3c99389faf03347963192 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:24:34,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:24:34,139 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:24:34,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:24:34,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:24:34,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:24:34,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:24:34,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:24:34,160 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:24:34,160 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:24:34,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:24:34,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:24:34,161 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:24:34,161 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:24:34,161 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:24:34,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:24:34,161 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:24:34,161 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:24:34,161 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:24:34,161 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:24:34,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:24:34,162 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:24:34,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:24:34,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:24:34,163 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:24:34,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:24:34,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:24:34,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:24:34,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:24:34,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:24:34,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:24:34,163 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:24:34,163 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5babed9169ff1f82a919f6310b42a42108866edd5cf3c99389faf03347963192 [2025-03-09 06:24:34,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:24:34,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:24:34,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:24:34,410 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:24:34,411 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:24:34,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i [2025-03-09 06:24:35,651 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca432373/58ca103421fc41ac868646b02643dbc4/FLAG79dbc53ef [2025-03-09 06:24:35,944 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:24:35,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i [2025-03-09 06:24:35,966 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca432373/58ca103421fc41ac868646b02643dbc4/FLAG79dbc53ef [2025-03-09 06:24:35,982 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca432373/58ca103421fc41ac868646b02643dbc4 [2025-03-09 06:24:35,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:24:35,985 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:24:35,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:24:35,987 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:24:35,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:24:35,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:24:35" (1/1) ... [2025-03-09 06:24:35,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d15c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:35, skipping insertion in model container [2025-03-09 06:24:35,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:24:35" (1/1) ... [2025-03-09 06:24:36,029 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:24:36,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:24:36,308 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:24:36,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:24:36,398 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:24:36,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36 WrapperNode [2025-03-09 06:24:36,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:24:36,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:24:36,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:24:36,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:24:36,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (1/1) ... [2025-03-09 06:24:36,417 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (1/1) ... [2025-03-09 06:24:36,441 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 283 [2025-03-09 06:24:36,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:24:36,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:24:36,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:24:36,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:24:36,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (1/1) ... [2025-03-09 06:24:36,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (1/1) ... [2025-03-09 06:24:36,451 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (1/1) ... [2025-03-09 06:24:36,467 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-09 06:24:36,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (1/1) ... [2025-03-09 06:24:36,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (1/1) ... [2025-03-09 06:24:36,483 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (1/1) ... [2025-03-09 06:24:36,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (1/1) ... [2025-03-09 06:24:36,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (1/1) ... [2025-03-09 06:24:36,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (1/1) ... [2025-03-09 06:24:36,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:24:36,494 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:24:36,494 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:24:36,494 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:24:36,494 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (1/1) ... [2025-03-09 06:24:36,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:24:36,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:24:36,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:24:36,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:24:36,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:24:36,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:24:36,543 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-09 06:24:36,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-09 06:24:36,543 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-09 06:24:36,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-09 06:24:36,543 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-09 06:24:36,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-09 06:24:36,543 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-09 06:24:36,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-09 06:24:36,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:24:36,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:24:36,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:24:36,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:24:36,545 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:24:36,640 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:24:36,642 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:24:37,013 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:24:37,013 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:24:37,291 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:24:37,291 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:24:37,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:24:37 BoogieIcfgContainer [2025-03-09 06:24:37,292 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:24:37,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:24:37,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:24:37,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:24:37,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:24:35" (1/3) ... [2025-03-09 06:24:37,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f8793e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:24:37, skipping insertion in model container [2025-03-09 06:24:37,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:24:36" (2/3) ... [2025-03-09 06:24:37,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f8793e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:24:37, skipping insertion in model container [2025-03-09 06:24:37,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:24:37" (3/3) ... [2025-03-09 06:24:37,301 INFO L128 eAbstractionObserver]: Analyzing ICFG mix008_tso.oepc.i [2025-03-09 06:24:37,314 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:24:37,316 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix008_tso.oepc.i that has 5 procedures, 53 locations, 1 initial locations, 0 loop locations, and 8 error locations. [2025-03-09 06:24:37,316 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:24:37,379 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:24:37,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2025-03-09 06:24:37,445 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2025-03-09 06:24:37,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:24:37,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 127 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-03-09 06:24:37,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2025-03-09 06:24:37,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 48 transitions, 108 flow [2025-03-09 06:24:37,457 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:24:37,466 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;@6e53aba0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:24:37,466 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-03-09 06:24:37,470 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:24:37,470 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:24:37,470 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:24:37,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:24:37,470 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:24:37,471 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:24:37,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:24:37,474 INFO L85 PathProgramCache]: Analyzing trace with hash 581351667, now seen corresponding path program 1 times [2025-03-09 06:24:37,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:24:37,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508619151] [2025-03-09 06:24:37,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:24:37,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:24:37,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:24:37,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:24:37,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:24:37,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:24:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:24:37,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:24:37,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508619151] [2025-03-09 06:24:37,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508619151] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:24:37,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:24:37,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:24:37,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090532800] [2025-03-09 06:24:37,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:24:37,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:24:37,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:24:37,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:24:37,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:24:37,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2025-03-09 06:24:37,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:24:37,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:24:37,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2025-03-09 06:24:37,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:24:46,862 INFO L124 PetriNetUnfolderBase]: 88167/115857 cut-off events. [2025-03-09 06:24:46,863 INFO L125 PetriNetUnfolderBase]: For 424/424 co-relation queries the response was YES. [2025-03-09 06:24:47,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232589 conditions, 115857 events. 88167/115857 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 3243. Compared 703069 event pairs, 28905 based on Foata normal form. 0/96481 useless extension candidates. Maximal degree in co-relation 232577. Up to 104113 conditions per place. [2025-03-09 06:24:47,437 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 69 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2025-03-09 06:24:47,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 325 flow [2025-03-09 06:24:47,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:24:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:24:47,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2025-03-09 06:24:47,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6794871794871795 [2025-03-09 06:24:47,446 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 108 flow. Second operand 3 states and 106 transitions. [2025-03-09 06:24:47,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 325 flow [2025-03-09 06:24:47,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 318 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:24:47,458 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 151 flow [2025-03-09 06:24:47,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2025-03-09 06:24:47,461 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2025-03-09 06:24:47,462 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 151 flow [2025-03-09 06:24:47,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:24:47,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:24:47,462 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:24:47,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:24:47,462 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:24:47,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:24:47,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2031879701, now seen corresponding path program 1 times [2025-03-09 06:24:47,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:24:47,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575470148] [2025-03-09 06:24:47,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:24:47,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:24:47,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:24:47,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:24:47,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:24:47,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:24:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:24:47,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:24:47,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575470148] [2025-03-09 06:24:47,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575470148] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:24:47,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:24:47,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:24:47,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694565695] [2025-03-09 06:24:47,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:24:47,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:24:47,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:24:47,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:24:47,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:24:47,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2025-03-09 06:24:47,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 151 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) [2025-03-09 06:24:47,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:24:47,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2025-03-09 06:24:47,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:24:54,129 INFO L124 PetriNetUnfolderBase]: 61165/80395 cut-off events. [2025-03-09 06:24:54,130 INFO L125 PetriNetUnfolderBase]: For 4963/4963 co-relation queries the response was YES. [2025-03-09 06:24:54,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181392 conditions, 80395 events. 61165/80395 cut-off events. For 4963/4963 co-relation queries the response was YES. Maximal size of possible extension queue 2269. Compared 472020 event pairs, 18595 based on Foata normal form. 0/73071 useless extension candidates. Maximal degree in co-relation 181381. Up to 68650 conditions per place. [2025-03-09 06:24:54,514 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 65 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2025-03-09 06:24:54,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 74 transitions, 333 flow [2025-03-09 06:24:54,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:24:54,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:24:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2025-03-09 06:24:54,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5096153846153846 [2025-03-09 06:24:54,516 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 151 flow. Second operand 4 states and 106 transitions. [2025-03-09 06:24:54,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 74 transitions, 333 flow [2025-03-09 06:24:54,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:24:54,524 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 140 flow [2025-03-09 06:24:54,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2025-03-09 06:24:54,525 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2025-03-09 06:24:54,525 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 140 flow [2025-03-09 06:24:54,525 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) [2025-03-09 06:24:54,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:24:54,525 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:24:54,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:24:54,526 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:24:54,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:24:54,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2031879700, now seen corresponding path program 1 times [2025-03-09 06:24:54,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:24:54,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470627652] [2025-03-09 06:24:54,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:24:54,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:24:54,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:24:54,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:24:54,541 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:24:54,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:24:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:24:54,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:24:54,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470627652] [2025-03-09 06:24:54,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470627652] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:24:54,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:24:54,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:24:54,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23693900] [2025-03-09 06:24:54,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:24:54,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:24:54,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:24:54,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:24:54,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:24:54,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2025-03-09 06:24:54,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 140 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) [2025-03-09 06:24:54,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:24:54,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2025-03-09 06:24:54,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:25:00,010 INFO L124 PetriNetUnfolderBase]: 46763/61669 cut-off events. [2025-03-09 06:25:00,010 INFO L125 PetriNetUnfolderBase]: For 9456/9456 co-relation queries the response was YES. [2025-03-09 06:25:00,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136909 conditions, 61669 events. 46763/61669 cut-off events. For 9456/9456 co-relation queries the response was YES. Maximal size of possible extension queue 1652. Compared 353173 event pairs, 10739 based on Foata normal form. 0/59549 useless extension candidates. Maximal degree in co-relation 136897. Up to 27945 conditions per place. [2025-03-09 06:25:00,292 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 93 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2025-03-09 06:25:00,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 106 transitions, 478 flow [2025-03-09 06:25:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:25:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:25:00,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2025-03-09 06:25:00,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6634615384615384 [2025-03-09 06:25:00,294 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 140 flow. Second operand 4 states and 138 transitions. [2025-03-09 06:25:00,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 106 transitions, 478 flow [2025-03-09 06:25:00,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 106 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:25:00,308 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 192 flow [2025-03-09 06:25:00,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2025-03-09 06:25:00,310 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2025-03-09 06:25:00,310 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 192 flow [2025-03-09 06:25:00,310 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) [2025-03-09 06:25:00,310 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:25:00,310 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:25:00,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:25:00,310 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:25:00,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:25:00,311 INFO L85 PathProgramCache]: Analyzing trace with hash 866904774, now seen corresponding path program 1 times [2025-03-09 06:25:00,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:25:00,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731152593] [2025-03-09 06:25:00,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:25:00,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:25:00,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 06:25:00,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 06:25:00,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:25:00,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:25:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:25:00,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:25:00,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731152593] [2025-03-09 06:25:00,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731152593] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:25:00,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:25:00,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:25:00,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765816399] [2025-03-09 06:25:00,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:25:00,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:25:00,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:25:00,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:25:00,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:25:00,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2025-03-09 06:25:00,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:25:00,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:25:00,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2025-03-09 06:25:00,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:25:04,613 INFO L124 PetriNetUnfolderBase]: 41915/55117 cut-off events. [2025-03-09 06:25:04,613 INFO L125 PetriNetUnfolderBase]: For 22104/22104 co-relation queries the response was YES. [2025-03-09 06:25:04,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133208 conditions, 55117 events. 41915/55117 cut-off events. For 22104/22104 co-relation queries the response was YES. Maximal size of possible extension queue 1598. Compared 312340 event pairs, 8871 based on Foata normal form. 0/54869 useless extension candidates. Maximal degree in co-relation 133195. Up to 21980 conditions per place. [2025-03-09 06:25:05,101 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 115 selfloop transitions, 13 changer transitions 4/136 dead transitions. [2025-03-09 06:25:05,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 136 transitions, 652 flow [2025-03-09 06:25:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:25:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:25:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2025-03-09 06:25:05,103 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2025-03-09 06:25:05,103 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 192 flow. Second operand 5 states and 176 transitions. [2025-03-09 06:25:05,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 136 transitions, 652 flow [2025-03-09 06:25:05,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 136 transitions, 634 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-09 06:25:05,129 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 216 flow [2025-03-09 06:25:05,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2025-03-09 06:25:05,129 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2025-03-09 06:25:05,129 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 216 flow [2025-03-09 06:25:05,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:25:05,130 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:25:05,130 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:25:05,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:25:05,130 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:25:05,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:25:05,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1188855103, now seen corresponding path program 1 times [2025-03-09 06:25:05,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:25:05,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850476060] [2025-03-09 06:25:05,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:25:05,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:25:05,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 06:25:05,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 06:25:05,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:25:05,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:25:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:25:05,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:25:05,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850476060] [2025-03-09 06:25:05,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850476060] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:25:05,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:25:05,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:25:05,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017642553] [2025-03-09 06:25:05,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:25:05,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:25:05,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:25:05,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:25:05,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:25:05,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2025-03-09 06:25:05,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:25:05,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:25:05,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2025-03-09 06:25:05,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand