./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --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/weaver/popl20-bad-counter-queue.wvr.c -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 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:41:01,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:41:01,188 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:41:01,195 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:41:01,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:41:01,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:41:01,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:41:01,220 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:41:01,220 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:41:01,220 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:41:01,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:41:01,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:41:01,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:41:01,224 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:41:01,225 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:41:01,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:41:01,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:41:01,225 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 -> 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 [2025-03-09 06:41:01,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:41:01,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:41:01,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:41:01,530 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:41:01,530 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:41:01,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2025-03-09 06:41:02,873 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dbd339ca/7d328aaf980c4cc3acd21245717337de/FLAG5eae0a086 [2025-03-09 06:41:03,136 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:41:03,137 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2025-03-09 06:41:03,144 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dbd339ca/7d328aaf980c4cc3acd21245717337de/FLAG5eae0a086 [2025-03-09 06:41:03,448 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dbd339ca/7d328aaf980c4cc3acd21245717337de [2025-03-09 06:41:03,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:41:03,452 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:41:03,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:41:03,455 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:41:03,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:41:03,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c5208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03, skipping insertion in model container [2025-03-09 06:41:03,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,472 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:41:03,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:41:03,619 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:41:03,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:41:03,656 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:41:03,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03 WrapperNode [2025-03-09 06:41:03,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:41:03,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:41:03,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:41:03,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:41:03,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,671 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,694 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 161 [2025-03-09 06:41:03,695 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:41:03,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:41:03,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:41:03,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:41:03,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,707 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,729 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-09 06:41:03,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,734 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:41:03,738 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:41:03,739 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:41:03,739 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:41:03,739 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (1/1) ... [2025-03-09 06:41:03,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:41:03,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:03,772 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 06:41:03,775 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 06:41:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:41:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:41:03,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:41:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:41:03,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:41:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:41:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:41:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:41:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:41:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:41:03,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:41:03,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:41:03,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:41:03,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:41:03,798 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 06:41:03,887 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:41:03,889 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:41:04,168 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:41:04,168 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:41:04,326 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:41:04,326 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:41:04,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:41:04 BoogieIcfgContainer [2025-03-09 06:41:04,327 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:41:04,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:41:04,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:41:04,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:41:04,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:41:03" (1/3) ... [2025-03-09 06:41:04,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb61201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:41:04, skipping insertion in model container [2025-03-09 06:41:04,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:03" (2/3) ... [2025-03-09 06:41:04,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb61201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:41:04, skipping insertion in model container [2025-03-09 06:41:04,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:41:04" (3/3) ... [2025-03-09 06:41:04,335 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2025-03-09 06:41:04,346 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:41:04,347 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-counter-queue.wvr.c that has 3 procedures, 64 locations, 1 initial locations, 3 loop locations, and 18 error locations. [2025-03-09 06:41:04,348 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:41:04,411 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 06:41:04,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 154 flow [2025-03-09 06:41:04,469 INFO L124 PetriNetUnfolderBase]: 7/68 cut-off events. [2025-03-09 06:41:04,471 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:41:04,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 68 events. 7/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 214 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2025-03-09 06:41:04,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 154 flow [2025-03-09 06:41:04,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 66 transitions, 141 flow [2025-03-09 06:41:04,485 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:41:04,493 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;@3bbbec1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:41:04,493 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2025-03-09 06:41:04,496 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:41:04,496 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:41:04,496 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:41:04,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:04,500 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:41:04,500 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:04,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:04,504 INFO L85 PathProgramCache]: Analyzing trace with hash 470822, now seen corresponding path program 1 times [2025-03-09 06:41:04,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:04,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16233714] [2025-03-09 06:41:04,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:04,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:04,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:41:04,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:41:04,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:04,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:04,690 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 06:41:04,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:04,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16233714] [2025-03-09 06:41:04,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16233714] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:04,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:04,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:41:04,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228447796] [2025-03-09 06:41:04,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:04,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:04,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:04,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:04,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:04,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2025-03-09 06:41:04,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 06:41:04,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:04,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2025-03-09 06:41:04,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:05,029 INFO L124 PetriNetUnfolderBase]: 425/1058 cut-off events. [2025-03-09 06:41:05,031 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2025-03-09 06:41:05,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 1058 events. 425/1058 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6731 event pairs, 290 based on Foata normal form. 1/851 useless extension candidates. Maximal degree in co-relation 1674. Up to 666 conditions per place. [2025-03-09 06:41:05,047 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 32 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2025-03-09 06:41:05,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 219 flow [2025-03-09 06:41:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:05,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:05,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2025-03-09 06:41:05,060 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2025-03-09 06:41:05,062 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 141 flow. Second operand 4 states and 178 transitions. [2025-03-09 06:41:05,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 219 flow [2025-03-09 06:41:05,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:41:05,070 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 165 flow [2025-03-09 06:41:05,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2025-03-09 06:41:05,077 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2025-03-09 06:41:05,077 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 165 flow [2025-03-09 06:41:05,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 06:41:05,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:05,077 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:41:05,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:41:05,078 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:05,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:05,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1141734880, now seen corresponding path program 1 times [2025-03-09 06:41:05,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:05,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083054440] [2025-03-09 06:41:05,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:05,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:05,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:41:05,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:41:05,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:05,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:05,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:05,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083054440] [2025-03-09 06:41:05,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083054440] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:05,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74917099] [2025-03-09 06:41:05,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:05,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:05,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:05,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:41:05,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:41:05,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:41:05,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:41:05,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:05,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:05,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:05,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:05,347 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:41:05,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74917099] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:05,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:41:05,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:41:05,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838793810] [2025-03-09 06:41:05,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:05,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:41:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:05,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:41:05,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:41:05,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2025-03-09 06:41:05,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 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 06:41:05,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:05,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2025-03-09 06:41:05,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:05,583 INFO L124 PetriNetUnfolderBase]: 425/1057 cut-off events. [2025-03-09 06:41:05,583 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-03-09 06:41:05,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 1057 events. 425/1057 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6754 event pairs, 290 based on Foata normal form. 1/851 useless extension candidates. Maximal degree in co-relation 1731. Up to 661 conditions per place. [2025-03-09 06:41:05,597 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 28 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2025-03-09 06:41:05,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 231 flow [2025-03-09 06:41:05,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:41:05,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:41:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 246 transitions. [2025-03-09 06:41:05,601 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2025-03-09 06:41:05,601 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 165 flow. Second operand 6 states and 246 transitions. [2025-03-09 06:41:05,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 231 flow [2025-03-09 06:41:05,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:05,603 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 172 flow [2025-03-09 06:41:05,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2025-03-09 06:41:05,604 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2025-03-09 06:41:05,605 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 172 flow [2025-03-09 06:41:05,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 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 06:41:05,605 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:05,605 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:41:05,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:41:05,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:05,810 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:05,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:05,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1034043291, now seen corresponding path program 1 times [2025-03-09 06:41:05,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:05,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544217936] [2025-03-09 06:41:05,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:05,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:05,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:41:05,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:41:05,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:05,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:05,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:05,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544217936] [2025-03-09 06:41:05,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544217936] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:05,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953106304] [2025-03-09 06:41:05,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:05,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:05,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:05,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:41:05,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:41:05,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:41:05,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:41:05,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:05,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:05,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:05,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:05,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:06,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953106304] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:06,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:06,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:41:06,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591713410] [2025-03-09 06:41:06,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:06,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:41:06,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:06,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:41:06,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:41:06,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2025-03-09 06:41:06,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 36.083333333333336) internal successors, (433), 12 states have internal predecessors, (433), 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 06:41:06,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:06,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2025-03-09 06:41:06,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:06,248 INFO L124 PetriNetUnfolderBase]: 428/1069 cut-off events. [2025-03-09 06:41:06,248 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2025-03-09 06:41:06,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1802 conditions, 1069 events. 428/1069 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6860 event pairs, 290 based on Foata normal form. 3/863 useless extension candidates. Maximal degree in co-relation 1732. Up to 668 conditions per place. [2025-03-09 06:41:06,256 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 31 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2025-03-09 06:41:06,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 77 transitions, 314 flow [2025-03-09 06:41:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:41:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:41:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 397 transitions. [2025-03-09 06:41:06,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5671428571428572 [2025-03-09 06:41:06,262 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 172 flow. Second operand 10 states and 397 transitions. [2025-03-09 06:41:06,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 77 transitions, 314 flow [2025-03-09 06:41:06,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 268 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-09 06:41:06,267 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 224 flow [2025-03-09 06:41:06,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=224, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2025-03-09 06:41:06,268 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2025-03-09 06:41:06,268 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 224 flow [2025-03-09 06:41:06,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.083333333333336) internal successors, (433), 12 states have internal predecessors, (433), 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 06:41:06,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:06,269 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:06,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 06:41:06,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-09 06:41:06,470 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:06,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:06,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1120572038, now seen corresponding path program 1 times [2025-03-09 06:41:06,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:06,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428937233] [2025-03-09 06:41:06,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:06,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:06,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:41:06,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:41:06,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:06,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:06,531 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 06:41:06,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:06,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428937233] [2025-03-09 06:41:06,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428937233] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:06,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:06,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:06,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855043145] [2025-03-09 06:41:06,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:06,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:06,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:06,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:06,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:06,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2025-03-09 06:41:06,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 06:41:06,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:06,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2025-03-09 06:41:06,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:06,744 INFO L124 PetriNetUnfolderBase]: 733/1642 cut-off events. [2025-03-09 06:41:06,744 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2025-03-09 06:41:06,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 1642 events. 733/1642 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11118 event pairs, 285 based on Foata normal form. 48/1379 useless extension candidates. Maximal degree in co-relation 2836. Up to 634 conditions per place. [2025-03-09 06:41:06,754 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 75 selfloop transitions, 5 changer transitions 0/108 dead transitions. [2025-03-09 06:41:06,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 450 flow [2025-03-09 06:41:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:06,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2025-03-09 06:41:06,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2025-03-09 06:41:06,756 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 224 flow. Second operand 4 states and 195 transitions. [2025-03-09 06:41:06,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 450 flow [2025-03-09 06:41:06,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 439 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-09 06:41:06,759 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 247 flow [2025-03-09 06:41:06,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2025-03-09 06:41:06,759 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2025-03-09 06:41:06,760 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 247 flow [2025-03-09 06:41:06,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 06:41:06,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:06,760 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:06,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:41:06,760 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:06,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:06,761 INFO L85 PathProgramCache]: Analyzing trace with hash 377995251, now seen corresponding path program 1 times [2025-03-09 06:41:06,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:06,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324611368] [2025-03-09 06:41:06,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:06,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:06,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:41:06,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:41:06,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:06,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:06,836 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 06:41:06,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:06,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324611368] [2025-03-09 06:41:06,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324611368] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:06,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:06,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:41:06,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978063195] [2025-03-09 06:41:06,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:06,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:41:06,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:06,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:41:06,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:41:06,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2025-03-09 06:41:06,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 06:41:06,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:06,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2025-03-09 06:41:06,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:07,065 INFO L124 PetriNetUnfolderBase]: 606/1560 cut-off events. [2025-03-09 06:41:07,066 INFO L125 PetriNetUnfolderBase]: For 320/352 co-relation queries the response was YES. [2025-03-09 06:41:07,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 1560 events. 606/1560 cut-off events. For 320/352 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 11092 event pairs, 397 based on Foata normal form. 41/1342 useless extension candidates. Maximal degree in co-relation 2784. Up to 802 conditions per place. [2025-03-09 06:41:07,078 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 70 selfloop transitions, 5 changer transitions 2/111 dead transitions. [2025-03-09 06:41:07,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 111 transitions, 471 flow [2025-03-09 06:41:07,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:41:07,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:41:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2025-03-09 06:41:07,080 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.72 [2025-03-09 06:41:07,080 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 247 flow. Second operand 5 states and 252 transitions. [2025-03-09 06:41:07,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 111 transitions, 471 flow [2025-03-09 06:41:07,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 111 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:41:07,085 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 272 flow [2025-03-09 06:41:07,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2025-03-09 06:41:07,086 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2025-03-09 06:41:07,086 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 272 flow [2025-03-09 06:41:07,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 06:41:07,087 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:07,087 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:07,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:41:07,087 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:07,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:07,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1230790016, now seen corresponding path program 1 times [2025-03-09 06:41:07,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:07,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135557091] [2025-03-09 06:41:07,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:07,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:07,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:41:07,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:41:07,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:07,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:07,138 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 06:41:07,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:07,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135557091] [2025-03-09 06:41:07,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135557091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:07,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:07,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:07,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521645516] [2025-03-09 06:41:07,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:07,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:07,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:07,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:07,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:07,162 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2025-03-09 06:41:07,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 06:41:07,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:07,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2025-03-09 06:41:07,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:07,470 INFO L124 PetriNetUnfolderBase]: 1051/2435 cut-off events. [2025-03-09 06:41:07,471 INFO L125 PetriNetUnfolderBase]: For 867/901 co-relation queries the response was YES. [2025-03-09 06:41:07,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4862 conditions, 2435 events. 1051/2435 cut-off events. For 867/901 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17844 event pairs, 417 based on Foata normal form. 88/2153 useless extension candidates. Maximal degree in co-relation 4823. Up to 948 conditions per place. [2025-03-09 06:41:07,487 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 85 selfloop transitions, 5 changer transitions 0/118 dead transitions. [2025-03-09 06:41:07,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 118 transitions, 592 flow [2025-03-09 06:41:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:07,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2025-03-09 06:41:07,489 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6892857142857143 [2025-03-09 06:41:07,489 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 272 flow. Second operand 4 states and 193 transitions. [2025-03-09 06:41:07,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 118 transitions, 592 flow [2025-03-09 06:41:07,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 118 transitions, 587 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:41:07,494 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 301 flow [2025-03-09 06:41:07,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2025-03-09 06:41:07,495 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2025-03-09 06:41:07,495 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 301 flow [2025-03-09 06:41:07,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 06:41:07,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:07,496 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:07,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:41:07,496 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:07,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:07,496 INFO L85 PathProgramCache]: Analyzing trace with hash -500214700, now seen corresponding path program 1 times [2025-03-09 06:41:07,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:07,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109776338] [2025-03-09 06:41:07,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:07,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:07,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:41:07,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:41:07,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:07,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:07,569 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 06:41:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:07,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109776338] [2025-03-09 06:41:07,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109776338] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:07,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:07,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:41:07,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477418047] [2025-03-09 06:41:07,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:07,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:41:07,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:07,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:41:07,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:41:07,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2025-03-09 06:41:07,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 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 06:41:07,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:07,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2025-03-09 06:41:07,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:07,817 INFO L124 PetriNetUnfolderBase]: 669/1731 cut-off events. [2025-03-09 06:41:07,818 INFO L125 PetriNetUnfolderBase]: For 816/873 co-relation queries the response was YES. [2025-03-09 06:41:07,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3584 conditions, 1731 events. 669/1731 cut-off events. For 816/873 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12843 event pairs, 474 based on Foata normal form. 39/1567 useless extension candidates. Maximal degree in co-relation 3543. Up to 994 conditions per place. [2025-03-09 06:41:07,829 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 44 selfloop transitions, 2 changer transitions 14/94 dead transitions. [2025-03-09 06:41:07,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 456 flow [2025-03-09 06:41:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:41:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:41:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2025-03-09 06:41:07,831 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6657142857142857 [2025-03-09 06:41:07,831 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 301 flow. Second operand 5 states and 233 transitions. [2025-03-09 06:41:07,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 456 flow [2025-03-09 06:41:07,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:41:07,837 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 294 flow [2025-03-09 06:41:07,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2025-03-09 06:41:07,838 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 30 predicate places. [2025-03-09 06:41:07,838 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 294 flow [2025-03-09 06:41:07,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 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 06:41:07,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:07,838 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:07,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:41:07,838 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:07,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1113090695, now seen corresponding path program 1 times [2025-03-09 06:41:07,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:07,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618212926] [2025-03-09 06:41:07,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:07,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:07,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:41:07,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:41:07,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:07,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:08,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:08,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618212926] [2025-03-09 06:41:08,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618212926] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:08,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336484054] [2025-03-09 06:41:08,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:08,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:08,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:08,151 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:41:08,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:41:08,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:41:08,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:41:08,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:08,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:08,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-09 06:41:08,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:08,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-09 06:41:08,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-09 06:41:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:08,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:08,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-09 06:41:08,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-03-09 06:41:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:08,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336484054] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:08,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:08,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:41:08,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474629157] [2025-03-09 06:41:08,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:08,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 06:41:08,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:08,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:41:08,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-03-09 06:41:08,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2025-03-09 06:41:08,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 35.38461538461539) internal successors, (460), 13 states have internal predecessors, (460), 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 06:41:08,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:08,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2025-03-09 06:41:08,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:09,128 INFO L124 PetriNetUnfolderBase]: 1403/3495 cut-off events. [2025-03-09 06:41:09,129 INFO L125 PetriNetUnfolderBase]: For 1814/1913 co-relation queries the response was YES. [2025-03-09 06:41:09,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 3495 events. 1403/3495 cut-off events. For 1814/1913 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 27167 event pairs, 405 based on Foata normal form. 57/3166 useless extension candidates. Maximal degree in co-relation 7401. Up to 833 conditions per place. [2025-03-09 06:41:09,153 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 110 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2025-03-09 06:41:09,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 160 transitions, 840 flow [2025-03-09 06:41:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:41:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:41:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 448 transitions. [2025-03-09 06:41:09,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.64 [2025-03-09 06:41:09,156 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 294 flow. Second operand 10 states and 448 transitions. [2025-03-09 06:41:09,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 160 transitions, 840 flow [2025-03-09 06:41:09,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 160 transitions, 796 flow, removed 20 selfloop flow, removed 6 redundant places. [2025-03-09 06:41:09,165 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 385 flow [2025-03-09 06:41:09,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2025-03-09 06:41:09,165 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2025-03-09 06:41:09,166 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 385 flow [2025-03-09 06:41:09,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.38461538461539) internal successors, (460), 13 states have internal predecessors, (460), 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 06:41:09,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:09,166 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:09,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 06:41:09,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:09,371 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:09,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:09,371 INFO L85 PathProgramCache]: Analyzing trace with hash -146103484, now seen corresponding path program 1 times [2025-03-09 06:41:09,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:09,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030383643] [2025-03-09 06:41:09,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:09,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:09,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:41:09,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:41:09,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:09,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:09,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:09,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030383643] [2025-03-09 06:41:09,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030383643] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:09,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526686539] [2025-03-09 06:41:09,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:09,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:09,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:09,577 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:41:09,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:41:09,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:41:09,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:41:09,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:09,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:09,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-09 06:41:09,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:09,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-09 06:41:09,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-09 06:41:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:09,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:09,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-03-09 06:41:09,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-09 06:41:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:09,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526686539] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:09,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:09,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-09 06:41:09,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043251625] [2025-03-09 06:41:09,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:09,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:41:09,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:09,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:41:09,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:41:09,788 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2025-03-09 06:41:09,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 385 flow. Second operand has 12 states, 12 states have (on average 33.5) internal successors, (402), 12 states have internal predecessors, (402), 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 06:41:09,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:09,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2025-03-09 06:41:09,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:10,296 INFO L124 PetriNetUnfolderBase]: 1672/3706 cut-off events. [2025-03-09 06:41:10,297 INFO L125 PetriNetUnfolderBase]: For 2824/2941 co-relation queries the response was YES. [2025-03-09 06:41:10,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8650 conditions, 3706 events. 1672/3706 cut-off events. For 2824/2941 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 26961 event pairs, 498 based on Foata normal form. 91/3454 useless extension candidates. Maximal degree in co-relation 8611. Up to 1052 conditions per place. [2025-03-09 06:41:10,321 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 114 selfloop transitions, 18 changer transitions 0/161 dead transitions. [2025-03-09 06:41:10,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 161 transitions, 881 flow [2025-03-09 06:41:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:41:10,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:41:10,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 428 transitions. [2025-03-09 06:41:10,323 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2025-03-09 06:41:10,323 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 385 flow. Second operand 10 states and 428 transitions. [2025-03-09 06:41:10,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 161 transitions, 881 flow [2025-03-09 06:41:10,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 161 transitions, 869 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-09 06:41:10,332 INFO L231 Difference]: Finished difference. Result has 105 places, 91 transitions, 435 flow [2025-03-09 06:41:10,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=435, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2025-03-09 06:41:10,333 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 39 predicate places. [2025-03-09 06:41:10,333 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 435 flow [2025-03-09 06:41:10,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.5) internal successors, (402), 12 states have internal predecessors, (402), 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 06:41:10,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:10,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:10,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 06:41:10,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:10,538 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:10,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:10,538 INFO L85 PathProgramCache]: Analyzing trace with hash -234241253, now seen corresponding path program 1 times [2025-03-09 06:41:10,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:10,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291227030] [2025-03-09 06:41:10,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:10,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:10,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:41:10,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:41:10,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:10,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:41:10,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:10,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291227030] [2025-03-09 06:41:10,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291227030] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:10,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:10,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:10,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448190921] [2025-03-09 06:41:10,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:10,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:41:10,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:10,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:41:10,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:41:10,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 70 [2025-03-09 06:41:10,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 435 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 06:41:10,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:10,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 70 [2025-03-09 06:41:10,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:11,234 INFO L124 PetriNetUnfolderBase]: 2855/6315 cut-off events. [2025-03-09 06:41:11,234 INFO L125 PetriNetUnfolderBase]: For 6715/6876 co-relation queries the response was YES. [2025-03-09 06:41:11,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15182 conditions, 6315 events. 2855/6315 cut-off events. For 6715/6876 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 52233 event pairs, 619 based on Foata normal form. 179/6011 useless extension candidates. Maximal degree in co-relation 15141. Up to 3087 conditions per place. [2025-03-09 06:41:11,270 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 144 selfloop transitions, 12 changer transitions 0/184 dead transitions. [2025-03-09 06:41:11,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 184 transitions, 1106 flow [2025-03-09 06:41:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:41:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:41:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 334 transitions. [2025-03-09 06:41:11,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6816326530612244 [2025-03-09 06:41:11,273 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 435 flow. Second operand 7 states and 334 transitions. [2025-03-09 06:41:11,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 184 transitions, 1106 flow [2025-03-09 06:41:11,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 184 transitions, 1068 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-03-09 06:41:11,285 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 518 flow [2025-03-09 06:41:11,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=518, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2025-03-09 06:41:11,286 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 42 predicate places. [2025-03-09 06:41:11,287 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 518 flow [2025-03-09 06:41:11,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 06:41:11,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:11,287 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:11,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:41:11,287 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:11,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1085268058, now seen corresponding path program 1 times [2025-03-09 06:41:11,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:11,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582897058] [2025-03-09 06:41:11,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:11,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:11,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:41:11,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:41:11,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:11,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:11,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:11,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582897058] [2025-03-09 06:41:11,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582897058] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:11,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188986190] [2025-03-09 06:41:11,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:11,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:11,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:11,492 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:41:11,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:41:11,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:41:11,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:41:11,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:11,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:11,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-09 06:41:11,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:11,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-09 06:41:11,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-09 06:41:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:11,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:11,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-03-09 06:41:11,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-09 06:41:11,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:11,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188986190] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:11,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:11,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:41:11,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277469915] [2025-03-09 06:41:11,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:11,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 06:41:11,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:11,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:41:11,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-03-09 06:41:11,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2025-03-09 06:41:11,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 518 flow. Second operand has 13 states, 13 states have (on average 35.69230769230769) internal successors, (464), 13 states have internal predecessors, (464), 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 06:41:11,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:11,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2025-03-09 06:41:11,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:12,569 INFO L124 PetriNetUnfolderBase]: 3060/7501 cut-off events. [2025-03-09 06:41:12,569 INFO L125 PetriNetUnfolderBase]: For 8527/8792 co-relation queries the response was YES. [2025-03-09 06:41:12,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18065 conditions, 7501 events. 3060/7501 cut-off events. For 8527/8792 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 65042 event pairs, 797 based on Foata normal form. 147/6871 useless extension candidates. Maximal degree in co-relation 18023. Up to 1955 conditions per place. [2025-03-09 06:41:12,679 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 166 selfloop transitions, 18 changer transitions 0/221 dead transitions. [2025-03-09 06:41:12,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 221 transitions, 1602 flow [2025-03-09 06:41:12,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:41:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:41:12,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 444 transitions. [2025-03-09 06:41:12,682 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6342857142857142 [2025-03-09 06:41:12,682 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 518 flow. Second operand 10 states and 444 transitions. [2025-03-09 06:41:12,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 221 transitions, 1602 flow [2025-03-09 06:41:12,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 221 transitions, 1588 flow, removed 7 selfloop flow, removed 0 redundant places. [2025-03-09 06:41:12,699 INFO L231 Difference]: Finished difference. Result has 120 places, 111 transitions, 621 flow [2025-03-09 06:41:12,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=621, PETRI_PLACES=120, PETRI_TRANSITIONS=111} [2025-03-09 06:41:12,700 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 54 predicate places. [2025-03-09 06:41:12,700 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 111 transitions, 621 flow [2025-03-09 06:41:12,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.69230769230769) internal successors, (464), 13 states have internal predecessors, (464), 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 06:41:12,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:12,700 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:12,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:41:12,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-09 06:41:12,903 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:12,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:12,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1328456199, now seen corresponding path program 1 times [2025-03-09 06:41:12,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:12,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105520880] [2025-03-09 06:41:12,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:12,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:12,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:41:12,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:41:12,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:12,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:41:12,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:12,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105520880] [2025-03-09 06:41:12,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105520880] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:12,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:12,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:41:12,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676275892] [2025-03-09 06:41:12,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:12,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:41:12,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:12,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:41:12,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:41:13,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2025-03-09 06:41:13,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 111 transitions, 621 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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 06:41:13,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:13,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2025-03-09 06:41:13,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:14,094 INFO L124 PetriNetUnfolderBase]: 5279/12041 cut-off events. [2025-03-09 06:41:14,094 INFO L125 PetriNetUnfolderBase]: For 17651/18216 co-relation queries the response was YES. [2025-03-09 06:41:14,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32099 conditions, 12041 events. 5279/12041 cut-off events. For 17651/18216 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 108696 event pairs, 1349 based on Foata normal form. 358/11264 useless extension candidates. Maximal degree in co-relation 32050. Up to 5854 conditions per place. [2025-03-09 06:41:14,155 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 183 selfloop transitions, 27 changer transitions 0/240 dead transitions. [2025-03-09 06:41:14,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 240 transitions, 1722 flow [2025-03-09 06:41:14,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 06:41:14,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 06:41:14,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 411 transitions. [2025-03-09 06:41:14,157 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2025-03-09 06:41:14,157 INFO L175 Difference]: Start difference. First operand has 120 places, 111 transitions, 621 flow. Second operand 9 states and 411 transitions. [2025-03-09 06:41:14,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 240 transitions, 1722 flow [2025-03-09 06:41:14,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 240 transitions, 1704 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-09 06:41:14,187 INFO L231 Difference]: Finished difference. Result has 126 places, 130 transitions, 805 flow [2025-03-09 06:41:14,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=805, PETRI_PLACES=126, PETRI_TRANSITIONS=130} [2025-03-09 06:41:14,188 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 60 predicate places. [2025-03-09 06:41:14,188 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 130 transitions, 805 flow [2025-03-09 06:41:14,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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 06:41:14,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:14,188 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:14,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:41:14,188 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:14,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash -716458850, now seen corresponding path program 1 times [2025-03-09 06:41:14,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:14,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732728253] [2025-03-09 06:41:14,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:14,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:14,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:41:14,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:41:14,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:14,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:14,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:14,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732728253] [2025-03-09 06:41:14,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732728253] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:14,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330099168] [2025-03-09 06:41:14,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:14,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:14,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:14,357 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:41:14,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:41:14,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:41:14,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:41:14,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:14,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:14,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-09 06:41:14,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:14,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-09 06:41:14,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-09 06:41:14,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:14,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:14,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-09 06:41:14,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-03-09 06:41:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:14,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330099168] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:14,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:14,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:41:14,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784773926] [2025-03-09 06:41:14,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:14,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 06:41:14,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:14,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:41:14,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-03-09 06:41:14,620 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2025-03-09 06:41:14,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 130 transitions, 805 flow. Second operand has 13 states, 13 states have (on average 33.84615384615385) internal successors, (440), 13 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:14,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:14,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2025-03-09 06:41:14,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:15,623 INFO L124 PetriNetUnfolderBase]: 4068/9107 cut-off events. [2025-03-09 06:41:15,623 INFO L125 PetriNetUnfolderBase]: For 17400/17829 co-relation queries the response was YES. [2025-03-09 06:41:15,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25623 conditions, 9107 events. 4068/9107 cut-off events. For 17400/17829 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 77673 event pairs, 1061 based on Foata normal form. 245/8580 useless extension candidates. Maximal degree in co-relation 25574. Up to 2868 conditions per place. [2025-03-09 06:41:15,675 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 208 selfloop transitions, 18 changer transitions 0/264 dead transitions. [2025-03-09 06:41:15,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 264 transitions, 2201 flow [2025-03-09 06:41:15,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:41:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:41:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 424 transitions. [2025-03-09 06:41:15,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6057142857142858 [2025-03-09 06:41:15,677 INFO L175 Difference]: Start difference. First operand has 126 places, 130 transitions, 805 flow. Second operand 10 states and 424 transitions. [2025-03-09 06:41:15,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 264 transitions, 2201 flow [2025-03-09 06:41:15,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 264 transitions, 2183 flow, removed 9 selfloop flow, removed 0 redundant places. [2025-03-09 06:41:15,705 INFO L231 Difference]: Finished difference. Result has 137 places, 132 transitions, 859 flow [2025-03-09 06:41:15,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=859, PETRI_PLACES=137, PETRI_TRANSITIONS=132} [2025-03-09 06:41:15,706 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 71 predicate places. [2025-03-09 06:41:15,706 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 132 transitions, 859 flow [2025-03-09 06:41:15,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 33.84615384615385) internal successors, (440), 13 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:15,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:15,707 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:15,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 06:41:15,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:15,908 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:15,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:15,909 INFO L85 PathProgramCache]: Analyzing trace with hash -848841406, now seen corresponding path program 1 times [2025-03-09 06:41:15,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:15,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206875784] [2025-03-09 06:41:15,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:15,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:15,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:41:15,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:41:15,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:15,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:41:15,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:15,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206875784] [2025-03-09 06:41:15,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206875784] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:15,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:15,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:41:15,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546001634] [2025-03-09 06:41:15,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:15,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:41:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:15,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:41:15,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:41:16,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2025-03-09 06:41:16,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 132 transitions, 859 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 06:41:16,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:16,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2025-03-09 06:41:16,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:16,955 INFO L124 PetriNetUnfolderBase]: 4494/10026 cut-off events. [2025-03-09 06:41:16,956 INFO L125 PetriNetUnfolderBase]: For 21137/21355 co-relation queries the response was YES. [2025-03-09 06:41:17,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30072 conditions, 10026 events. 4494/10026 cut-off events. For 21137/21355 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 86147 event pairs, 1666 based on Foata normal form. 302/9727 useless extension candidates. Maximal degree in co-relation 30017. Up to 3839 conditions per place. [2025-03-09 06:41:17,047 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 182 selfloop transitions, 21 changer transitions 0/233 dead transitions. [2025-03-09 06:41:17,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 233 transitions, 1900 flow [2025-03-09 06:41:17,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:41:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:41:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 274 transitions. [2025-03-09 06:41:17,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2025-03-09 06:41:17,049 INFO L175 Difference]: Start difference. First operand has 137 places, 132 transitions, 859 flow. Second operand 6 states and 274 transitions. [2025-03-09 06:41:17,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 233 transitions, 1900 flow [2025-03-09 06:41:17,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 233 transitions, 1794 flow, removed 6 selfloop flow, removed 9 redundant places. [2025-03-09 06:41:17,112 INFO L231 Difference]: Finished difference. Result has 135 places, 133 transitions, 862 flow [2025-03-09 06:41:17,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=862, PETRI_PLACES=135, PETRI_TRANSITIONS=133} [2025-03-09 06:41:17,114 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 69 predicate places. [2025-03-09 06:41:17,114 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 133 transitions, 862 flow [2025-03-09 06:41:17,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 06:41:17,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:17,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:17,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 06:41:17,114 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:17,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:17,115 INFO L85 PathProgramCache]: Analyzing trace with hash -848842399, now seen corresponding path program 1 times [2025-03-09 06:41:17,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:17,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306597412] [2025-03-09 06:41:17,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:17,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:17,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:41:17,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:41:17,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:17,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:41:17,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306597412] [2025-03-09 06:41:17,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306597412] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:17,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:17,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:17,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476317598] [2025-03-09 06:41:17,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:17,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:17,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:17,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:17,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:17,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2025-03-09 06:41:17,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 133 transitions, 862 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:17,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:17,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2025-03-09 06:41:17,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:18,041 INFO L124 PetriNetUnfolderBase]: 4781/10367 cut-off events. [2025-03-09 06:41:18,041 INFO L125 PetriNetUnfolderBase]: For 20412/20768 co-relation queries the response was YES. [2025-03-09 06:41:18,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31409 conditions, 10367 events. 4781/10367 cut-off events. For 20412/20768 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 88075 event pairs, 1973 based on Foata normal form. 360/10064 useless extension candidates. Maximal degree in co-relation 31358. Up to 4310 conditions per place. [2025-03-09 06:41:18,117 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 131 selfloop transitions, 16 changer transitions 0/185 dead transitions. [2025-03-09 06:41:18,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 185 transitions, 1465 flow [2025-03-09 06:41:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2025-03-09 06:41:18,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2025-03-09 06:41:18,118 INFO L175 Difference]: Start difference. First operand has 135 places, 133 transitions, 862 flow. Second operand 4 states and 196 transitions. [2025-03-09 06:41:18,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 185 transitions, 1465 flow [2025-03-09 06:41:18,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 185 transitions, 1430 flow, removed 7 selfloop flow, removed 3 redundant places. [2025-03-09 06:41:18,184 INFO L231 Difference]: Finished difference. Result has 137 places, 134 transitions, 893 flow [2025-03-09 06:41:18,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=893, PETRI_PLACES=137, PETRI_TRANSITIONS=134} [2025-03-09 06:41:18,185 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 71 predicate places. [2025-03-09 06:41:18,185 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 134 transitions, 893 flow [2025-03-09 06:41:18,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:18,185 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:18,185 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:18,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 06:41:18,185 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:18,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:18,186 INFO L85 PathProgramCache]: Analyzing trace with hash -735388388, now seen corresponding path program 1 times [2025-03-09 06:41:18,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:18,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219447532] [2025-03-09 06:41:18,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:18,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:18,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:41:18,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:41:18,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:18,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:41:18,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:18,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219447532] [2025-03-09 06:41:18,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219447532] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:18,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:18,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:18,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899620879] [2025-03-09 06:41:18,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:18,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:41:18,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:18,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:41:18,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:41:18,282 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 70 [2025-03-09 06:41:18,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 134 transitions, 893 flow. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 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 06:41:18,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:18,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 70 [2025-03-09 06:41:18,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:19,195 INFO L124 PetriNetUnfolderBase]: 5261/11191 cut-off events. [2025-03-09 06:41:19,196 INFO L125 PetriNetUnfolderBase]: For 33222/33922 co-relation queries the response was YES. [2025-03-09 06:41:19,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35430 conditions, 11191 events. 5261/11191 cut-off events. For 33222/33922 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 95561 event pairs, 1596 based on Foata normal form. 448/11083 useless extension candidates. Maximal degree in co-relation 35378. Up to 6800 conditions per place. [2025-03-09 06:41:19,267 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 178 selfloop transitions, 19 changer transitions 0/234 dead transitions. [2025-03-09 06:41:19,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 234 transitions, 1918 flow [2025-03-09 06:41:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:41:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:41:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 334 transitions. [2025-03-09 06:41:19,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6816326530612244 [2025-03-09 06:41:19,269 INFO L175 Difference]: Start difference. First operand has 137 places, 134 transitions, 893 flow. Second operand 7 states and 334 transitions. [2025-03-09 06:41:19,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 234 transitions, 1918 flow [2025-03-09 06:41:19,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 234 transitions, 1887 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:19,334 INFO L231 Difference]: Finished difference. Result has 145 places, 143 transitions, 1000 flow [2025-03-09 06:41:19,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1000, PETRI_PLACES=145, PETRI_TRANSITIONS=143} [2025-03-09 06:41:19,335 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 79 predicate places. [2025-03-09 06:41:19,335 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 143 transitions, 1000 flow [2025-03-09 06:41:19,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 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 06:41:19,335 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:19,335 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-09 06:41:19,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-09 06:41:19,335 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:19,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash 330685333, now seen corresponding path program 2 times [2025-03-09 06:41:19,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:19,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038055093] [2025-03-09 06:41:19,336 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:41:19,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:19,346 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:41:19,351 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:41:19,352 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:41:19,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:41:19,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:19,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038055093] [2025-03-09 06:41:19,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038055093] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:19,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126347645] [2025-03-09 06:41:19,389 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:41:19,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:19,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:19,393 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:41:19,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 06:41:19,438 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:41:19,451 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:41:19,451 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:41:19,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:19,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:41:19,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:41:19,471 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:41:19,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126347645] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:19,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:19,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-09 06:41:19,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329616546] [2025-03-09 06:41:19,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:19,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:19,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:19,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:19,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:19,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2025-03-09 06:41:19,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 143 transitions, 1000 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 06:41:19,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:19,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2025-03-09 06:41:19,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:20,199 INFO L124 PetriNetUnfolderBase]: 3372/8698 cut-off events. [2025-03-09 06:41:20,200 INFO L125 PetriNetUnfolderBase]: For 20970/21389 co-relation queries the response was YES. [2025-03-09 06:41:20,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27003 conditions, 8698 events. 3372/8698 cut-off events. For 20970/21389 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 80902 event pairs, 2230 based on Foata normal form. 213/8428 useless extension candidates. Maximal degree in co-relation 26951. Up to 5278 conditions per place. [2025-03-09 06:41:20,245 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 80 selfloop transitions, 15 changer transitions 0/142 dead transitions. [2025-03-09 06:41:20,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 142 transitions, 1180 flow [2025-03-09 06:41:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2025-03-09 06:41:20,246 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2025-03-09 06:41:20,246 INFO L175 Difference]: Start difference. First operand has 145 places, 143 transitions, 1000 flow. Second operand 4 states and 172 transitions. [2025-03-09 06:41:20,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 142 transitions, 1180 flow [2025-03-09 06:41:20,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 142 transitions, 1166 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-03-09 06:41:20,289 INFO L231 Difference]: Finished difference. Result has 143 places, 142 transitions, 1006 flow [2025-03-09 06:41:20,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1006, PETRI_PLACES=143, PETRI_TRANSITIONS=142} [2025-03-09 06:41:20,290 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 77 predicate places. [2025-03-09 06:41:20,290 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 142 transitions, 1006 flow [2025-03-09 06:41:20,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 06:41:20,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:20,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:20,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 06:41:20,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:20,494 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:20,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:20,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1070770913, now seen corresponding path program 1 times [2025-03-09 06:41:20,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:20,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611515313] [2025-03-09 06:41:20,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:20,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:20,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:41:20,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:41:20,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:20,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:41:20,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:20,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611515313] [2025-03-09 06:41:20,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611515313] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:20,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:20,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:20,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387254202] [2025-03-09 06:41:20,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:20,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:20,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:20,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:20,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:20,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2025-03-09 06:41:20,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 142 transitions, 1006 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 06:41:20,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:20,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2025-03-09 06:41:20,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:21,289 INFO L124 PetriNetUnfolderBase]: 4646/10390 cut-off events. [2025-03-09 06:41:21,289 INFO L125 PetriNetUnfolderBase]: For 25534/25888 co-relation queries the response was YES. [2025-03-09 06:41:21,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33416 conditions, 10390 events. 4646/10390 cut-off events. For 25534/25888 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 90467 event pairs, 2436 based on Foata normal form. 329/10261 useless extension candidates. Maximal degree in co-relation 33297. Up to 5669 conditions per place. [2025-03-09 06:41:21,366 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 160 selfloop transitions, 7 changer transitions 0/205 dead transitions. [2025-03-09 06:41:21,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 205 transitions, 1771 flow [2025-03-09 06:41:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:21,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2025-03-09 06:41:21,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7107142857142857 [2025-03-09 06:41:21,370 INFO L175 Difference]: Start difference. First operand has 143 places, 142 transitions, 1006 flow. Second operand 4 states and 199 transitions. [2025-03-09 06:41:21,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 205 transitions, 1771 flow [2025-03-09 06:41:21,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 205 transitions, 1741 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:41:21,450 INFO L231 Difference]: Finished difference. Result has 145 places, 144 transitions, 1028 flow [2025-03-09 06:41:21,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1028, PETRI_PLACES=145, PETRI_TRANSITIONS=144} [2025-03-09 06:41:21,451 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 79 predicate places. [2025-03-09 06:41:21,451 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 144 transitions, 1028 flow [2025-03-09 06:41:21,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 06:41:21,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:21,451 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:21,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-09 06:41:21,451 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:21,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:21,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1322203071, now seen corresponding path program 1 times [2025-03-09 06:41:21,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:21,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363252375] [2025-03-09 06:41:21,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:21,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:21,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:41:21,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:41:21,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:21,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:41:21,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:21,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363252375] [2025-03-09 06:41:21,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363252375] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:21,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:21,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:41:21,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942694802] [2025-03-09 06:41:21,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:21,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:41:21,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:21,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:41:21,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:41:21,553 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2025-03-09 06:41:21,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 144 transitions, 1028 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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 06:41:21,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:21,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2025-03-09 06:41:21,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:22,974 INFO L124 PetriNetUnfolderBase]: 6455/13295 cut-off events. [2025-03-09 06:41:22,974 INFO L125 PetriNetUnfolderBase]: For 45163/46217 co-relation queries the response was YES. [2025-03-09 06:41:23,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45060 conditions, 13295 events. 6455/13295 cut-off events. For 45163/46217 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 114393 event pairs, 1761 based on Foata normal form. 609/13185 useless extension candidates. Maximal degree in co-relation 44955. Up to 7688 conditions per place. [2025-03-09 06:41:23,109 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 211 selfloop transitions, 34 changer transitions 0/283 dead transitions. [2025-03-09 06:41:23,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 283 transitions, 2465 flow [2025-03-09 06:41:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 06:41:23,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 06:41:23,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 411 transitions. [2025-03-09 06:41:23,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2025-03-09 06:41:23,111 INFO L175 Difference]: Start difference. First operand has 145 places, 144 transitions, 1028 flow. Second operand 9 states and 411 transitions. [2025-03-09 06:41:23,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 283 transitions, 2465 flow [2025-03-09 06:41:23,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 283 transitions, 2463 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-09 06:41:23,244 INFO L231 Difference]: Finished difference. Result has 155 places, 163 transitions, 1261 flow [2025-03-09 06:41:23,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1261, PETRI_PLACES=155, PETRI_TRANSITIONS=163} [2025-03-09 06:41:23,245 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 89 predicate places. [2025-03-09 06:41:23,245 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 163 transitions, 1261 flow [2025-03-09 06:41:23,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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 06:41:23,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:23,245 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:23,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 06:41:23,245 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:23,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:23,246 INFO L85 PathProgramCache]: Analyzing trace with hash -2084498787, now seen corresponding path program 1 times [2025-03-09 06:41:23,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:23,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807432740] [2025-03-09 06:41:23,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:23,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:23,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:41:23,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:41:23,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:23,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:41:23,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:23,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807432740] [2025-03-09 06:41:23,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807432740] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:23,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:23,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:23,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361757382] [2025-03-09 06:41:23,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:23,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:23,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:23,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:23,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:23,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2025-03-09 06:41:23,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 163 transitions, 1261 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 06:41:23,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:23,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2025-03-09 06:41:23,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:24,198 INFO L124 PetriNetUnfolderBase]: 4000/9598 cut-off events. [2025-03-09 06:41:24,198 INFO L125 PetriNetUnfolderBase]: For 29425/29801 co-relation queries the response was YES. [2025-03-09 06:41:24,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33590 conditions, 9598 events. 4000/9598 cut-off events. For 29425/29801 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 87289 event pairs, 1424 based on Foata normal form. 324/9781 useless extension candidates. Maximal degree in co-relation 33481. Up to 3474 conditions per place. [2025-03-09 06:41:24,257 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 187 selfloop transitions, 4 changer transitions 0/241 dead transitions. [2025-03-09 06:41:24,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 241 transitions, 2210 flow [2025-03-09 06:41:24,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:24,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2025-03-09 06:41:24,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7607142857142857 [2025-03-09 06:41:24,259 INFO L175 Difference]: Start difference. First operand has 155 places, 163 transitions, 1261 flow. Second operand 4 states and 213 transitions. [2025-03-09 06:41:24,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 241 transitions, 2210 flow [2025-03-09 06:41:24,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 241 transitions, 2196 flow, removed 7 selfloop flow, removed 0 redundant places. [2025-03-09 06:41:24,351 INFO L231 Difference]: Finished difference. Result has 160 places, 164 transitions, 1274 flow [2025-03-09 06:41:24,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1274, PETRI_PLACES=160, PETRI_TRANSITIONS=164} [2025-03-09 06:41:24,352 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 94 predicate places. [2025-03-09 06:41:24,352 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 164 transitions, 1274 flow [2025-03-09 06:41:24,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 06:41:24,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:24,352 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:24,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 06:41:24,352 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:24,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:24,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1414901118, now seen corresponding path program 1 times [2025-03-09 06:41:24,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:24,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983938475] [2025-03-09 06:41:24,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:24,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:24,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:41:24,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:41:24,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:24,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:41:24,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:24,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983938475] [2025-03-09 06:41:24,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983938475] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:24,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:24,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:24,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086975680] [2025-03-09 06:41:24,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:24,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:24,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:24,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:24,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:24,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2025-03-09 06:41:24,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 164 transitions, 1274 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 06:41:24,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:24,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2025-03-09 06:41:24,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:25,310 INFO L124 PetriNetUnfolderBase]: 5799/12012 cut-off events. [2025-03-09 06:41:25,310 INFO L125 PetriNetUnfolderBase]: For 43211/44157 co-relation queries the response was YES. [2025-03-09 06:41:25,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43061 conditions, 12012 events. 5799/12012 cut-off events. For 43211/44157 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 101905 event pairs, 2255 based on Foata normal form. 572/12393 useless extension candidates. Maximal degree in co-relation 42949. Up to 5343 conditions per place. [2025-03-09 06:41:25,428 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 192 selfloop transitions, 16 changer transitions 0/253 dead transitions. [2025-03-09 06:41:25,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 253 transitions, 2471 flow [2025-03-09 06:41:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2025-03-09 06:41:25,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6928571428571428 [2025-03-09 06:41:25,429 INFO L175 Difference]: Start difference. First operand has 160 places, 164 transitions, 1274 flow. Second operand 4 states and 194 transitions. [2025-03-09 06:41:25,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 253 transitions, 2471 flow [2025-03-09 06:41:25,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 253 transitions, 2462 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:25,563 INFO L231 Difference]: Finished difference. Result has 164 places, 165 transitions, 1337 flow [2025-03-09 06:41:25,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1337, PETRI_PLACES=164, PETRI_TRANSITIONS=165} [2025-03-09 06:41:25,563 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 98 predicate places. [2025-03-09 06:41:25,563 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 165 transitions, 1337 flow [2025-03-09 06:41:25,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 06:41:25,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:25,563 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:25,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-09 06:41:25,564 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:25,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:25,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1414900125, now seen corresponding path program 1 times [2025-03-09 06:41:25,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:25,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106900720] [2025-03-09 06:41:25,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:25,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:25,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:41:25,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:41:25,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:25,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:41:25,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:25,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106900720] [2025-03-09 06:41:25,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106900720] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:25,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:25,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:41:25,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553445740] [2025-03-09 06:41:25,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:25,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:41:25,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:25,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:41:25,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:41:25,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2025-03-09 06:41:25,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 165 transitions, 1337 flow. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 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 06:41:25,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:25,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2025-03-09 06:41:25,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:26,563 INFO L124 PetriNetUnfolderBase]: 5391/11099 cut-off events. [2025-03-09 06:41:26,564 INFO L125 PetriNetUnfolderBase]: For 45914/46759 co-relation queries the response was YES. [2025-03-09 06:41:26,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41923 conditions, 11099 events. 5391/11099 cut-off events. For 45914/46759 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 92229 event pairs, 1912 based on Foata normal form. 528/11460 useless extension candidates. Maximal degree in co-relation 41810. Up to 4678 conditions per place. [2025-03-09 06:41:26,636 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 280 selfloop transitions, 21 changer transitions 0/338 dead transitions. [2025-03-09 06:41:26,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 338 transitions, 3445 flow [2025-03-09 06:41:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:41:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:41:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2025-03-09 06:41:26,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2025-03-09 06:41:26,638 INFO L175 Difference]: Start difference. First operand has 164 places, 165 transitions, 1337 flow. Second operand 6 states and 270 transitions. [2025-03-09 06:41:26,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 338 transitions, 3445 flow [2025-03-09 06:41:26,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 338 transitions, 3383 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-03-09 06:41:26,734 INFO L231 Difference]: Finished difference. Result has 167 places, 166 transitions, 1336 flow [2025-03-09 06:41:26,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1336, PETRI_PLACES=167, PETRI_TRANSITIONS=166} [2025-03-09 06:41:26,735 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 101 predicate places. [2025-03-09 06:41:26,735 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 1336 flow [2025-03-09 06:41:26,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 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 06:41:26,735 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:26,735 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:26,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-09 06:41:26,735 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:26,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:26,736 INFO L85 PathProgramCache]: Analyzing trace with hash 702819835, now seen corresponding path program 1 times [2025-03-09 06:41:26,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:26,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560842181] [2025-03-09 06:41:26,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:26,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:26,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:41:26,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:41:26,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:26,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:41:26,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:26,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560842181] [2025-03-09 06:41:26,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560842181] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:26,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:26,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:26,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677337915] [2025-03-09 06:41:26,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:26,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:26,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:26,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:26,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:26,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2025-03-09 06:41:26,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 166 transitions, 1336 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 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) [2025-03-09 06:41:26,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:26,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2025-03-09 06:41:26,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:27,614 INFO L124 PetriNetUnfolderBase]: 5192/10817 cut-off events. [2025-03-09 06:41:27,615 INFO L125 PetriNetUnfolderBase]: For 46400/47272 co-relation queries the response was YES. [2025-03-09 06:41:27,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41493 conditions, 10817 events. 5192/10817 cut-off events. For 46400/47272 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 90608 event pairs, 2705 based on Foata normal form. 542/11161 useless extension candidates. Maximal degree in co-relation 41380. Up to 6418 conditions per place. [2025-03-09 06:41:27,709 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 205 selfloop transitions, 7 changer transitions 0/255 dead transitions. [2025-03-09 06:41:27,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 255 transitions, 2551 flow [2025-03-09 06:41:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:27,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2025-03-09 06:41:27,710 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7035714285714286 [2025-03-09 06:41:27,710 INFO L175 Difference]: Start difference. First operand has 167 places, 166 transitions, 1336 flow. Second operand 4 states and 197 transitions. [2025-03-09 06:41:27,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 255 transitions, 2551 flow [2025-03-09 06:41:27,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 255 transitions, 2529 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-09 06:41:27,911 INFO L231 Difference]: Finished difference. Result has 170 places, 168 transitions, 1366 flow [2025-03-09 06:41:27,911 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1366, PETRI_PLACES=170, PETRI_TRANSITIONS=168} [2025-03-09 06:41:27,911 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 104 predicate places. [2025-03-09 06:41:27,911 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 168 transitions, 1366 flow [2025-03-09 06:41:27,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 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) [2025-03-09 06:41:27,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:27,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:27,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-09 06:41:27,911 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:27,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:27,912 INFO L85 PathProgramCache]: Analyzing trace with hash -606080290, now seen corresponding path program 1 times [2025-03-09 06:41:27,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:27,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156895959] [2025-03-09 06:41:27,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:27,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:27,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 06:41:27,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 06:41:27,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:27,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:41:27,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:27,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156895959] [2025-03-09 06:41:27,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156895959] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:27,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:27,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:27,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335078194] [2025-03-09 06:41:27,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:27,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:27,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:27,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:27,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:27,942 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2025-03-09 06:41:27,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 168 transitions, 1366 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 06:41:27,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:27,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2025-03-09 06:41:27,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:28,737 INFO L124 PetriNetUnfolderBase]: 4024/9234 cut-off events. [2025-03-09 06:41:28,737 INFO L125 PetriNetUnfolderBase]: For 39950/40621 co-relation queries the response was YES. [2025-03-09 06:41:28,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35911 conditions, 9234 events. 4024/9234 cut-off events. For 39950/40621 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 80972 event pairs, 1446 based on Foata normal form. 428/9621 useless extension candidates. Maximal degree in co-relation 35796. Up to 3479 conditions per place. [2025-03-09 06:41:28,815 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 197 selfloop transitions, 4 changer transitions 0/252 dead transitions. [2025-03-09 06:41:28,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 252 transitions, 2467 flow [2025-03-09 06:41:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:28,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 211 transitions. [2025-03-09 06:41:28,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7535714285714286 [2025-03-09 06:41:28,816 INFO L175 Difference]: Start difference. First operand has 170 places, 168 transitions, 1366 flow. Second operand 4 states and 211 transitions. [2025-03-09 06:41:28,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 252 transitions, 2467 flow [2025-03-09 06:41:29,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 252 transitions, 2465 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-09 06:41:29,005 INFO L231 Difference]: Finished difference. Result has 175 places, 169 transitions, 1385 flow [2025-03-09 06:41:29,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1385, PETRI_PLACES=175, PETRI_TRANSITIONS=169} [2025-03-09 06:41:29,006 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 109 predicate places. [2025-03-09 06:41:29,006 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 169 transitions, 1385 flow [2025-03-09 06:41:29,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 06:41:29,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:29,006 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:29,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-09 06:41:29,006 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:29,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:29,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1979385646, now seen corresponding path program 1 times [2025-03-09 06:41:29,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:29,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233141244] [2025-03-09 06:41:29,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:29,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:29,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 06:41:29,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 06:41:29,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:29,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:29,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:29,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233141244] [2025-03-09 06:41:29,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233141244] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:29,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051743868] [2025-03-09 06:41:29,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:29,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:29,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:29,108 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:41:29,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 06:41:29,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 06:41:29,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 06:41:29,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:29,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:29,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 06:41:29,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:29,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:29,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051743868] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:29,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:29,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-03-09 06:41:29,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117603515] [2025-03-09 06:41:29,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:29,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 06:41:29,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:29,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 06:41:29,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2025-03-09 06:41:29,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2025-03-09 06:41:29,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 169 transitions, 1385 flow. Second operand has 20 states, 20 states have (on average 34.95) internal successors, (699), 20 states have internal predecessors, (699), 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 06:41:29,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:29,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2025-03-09 06:41:29,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:30,866 INFO L124 PetriNetUnfolderBase]: 6277/14444 cut-off events. [2025-03-09 06:41:30,867 INFO L125 PetriNetUnfolderBase]: For 64538/65525 co-relation queries the response was YES. [2025-03-09 06:41:30,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57522 conditions, 14444 events. 6277/14444 cut-off events. For 64538/65525 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 136107 event pairs, 3022 based on Foata normal form. 516/14876 useless extension candidates. Maximal degree in co-relation 53777. Up to 6396 conditions per place. [2025-03-09 06:41:30,977 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 303 selfloop transitions, 16 changer transitions 6/376 dead transitions. [2025-03-09 06:41:30,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 376 transitions, 3881 flow [2025-03-09 06:41:30,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:41:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:41:30,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 439 transitions. [2025-03-09 06:41:30,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6271428571428571 [2025-03-09 06:41:30,978 INFO L175 Difference]: Start difference. First operand has 175 places, 169 transitions, 1385 flow. Second operand 10 states and 439 transitions. [2025-03-09 06:41:30,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 376 transitions, 3881 flow [2025-03-09 06:41:31,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 376 transitions, 3866 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:31,246 INFO L231 Difference]: Finished difference. Result has 187 places, 174 transitions, 1477 flow [2025-03-09 06:41:31,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1477, PETRI_PLACES=187, PETRI_TRANSITIONS=174} [2025-03-09 06:41:31,246 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 121 predicate places. [2025-03-09 06:41:31,246 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 174 transitions, 1477 flow [2025-03-09 06:41:31,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 34.95) internal successors, (699), 20 states have internal predecessors, (699), 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 06:41:31,250 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:31,250 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] [2025-03-09 06:41:31,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 06:41:31,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-09 06:41:31,451 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:31,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1363412013, now seen corresponding path program 1 times [2025-03-09 06:41:31,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:31,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793117388] [2025-03-09 06:41:31,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:31,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:31,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:41:31,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:41:31,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:31,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:41:31,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:31,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793117388] [2025-03-09 06:41:31,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793117388] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:31,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:31,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:31,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131007574] [2025-03-09 06:41:31,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:31,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:31,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:31,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:31,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:31,495 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2025-03-09 06:41:31,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 174 transitions, 1477 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 06:41:31,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:31,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2025-03-09 06:41:31,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:32,855 INFO L124 PetriNetUnfolderBase]: 7207/15537 cut-off events. [2025-03-09 06:41:32,856 INFO L125 PetriNetUnfolderBase]: For 76205/77241 co-relation queries the response was YES. [2025-03-09 06:41:32,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63361 conditions, 15537 events. 7207/15537 cut-off events. For 76205/77241 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 141365 event pairs, 2489 based on Foata normal form. 596/16051 useless extension candidates. Maximal degree in co-relation 59606. Up to 6043 conditions per place. [2025-03-09 06:41:32,970 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 203 selfloop transitions, 18 changer transitions 0/266 dead transitions. [2025-03-09 06:41:32,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 266 transitions, 2774 flow [2025-03-09 06:41:32,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2025-03-09 06:41:32,971 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2025-03-09 06:41:32,971 INFO L175 Difference]: Start difference. First operand has 187 places, 174 transitions, 1477 flow. Second operand 4 states and 189 transitions. [2025-03-09 06:41:32,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 266 transitions, 2774 flow [2025-03-09 06:41:33,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 266 transitions, 2749 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-03-09 06:41:33,256 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 1471 flow [2025-03-09 06:41:33,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1471, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2025-03-09 06:41:33,257 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 118 predicate places. [2025-03-09 06:41:33,257 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 1471 flow [2025-03-09 06:41:33,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 06:41:33,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:33,257 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] [2025-03-09 06:41:33,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-09 06:41:33,257 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:33,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:33,258 INFO L85 PathProgramCache]: Analyzing trace with hash 525775160, now seen corresponding path program 1 times [2025-03-09 06:41:33,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:33,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813073872] [2025-03-09 06:41:33,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:33,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:33,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:41:33,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:41:33,267 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:33,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:41:33,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:33,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813073872] [2025-03-09 06:41:33,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813073872] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:33,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:33,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:41:33,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769272503] [2025-03-09 06:41:33,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:33,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:41:33,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:33,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:41:33,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:41:33,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2025-03-09 06:41:33,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 172 transitions, 1471 flow. Second operand has 9 states, 9 states have (on average 28.22222222222222) internal successors, (254), 9 states have internal predecessors, (254), 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 06:41:33,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:33,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2025-03-09 06:41:33,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:37,307 INFO L124 PetriNetUnfolderBase]: 16136/31539 cut-off events. [2025-03-09 06:41:37,307 INFO L125 PetriNetUnfolderBase]: For 158136/159447 co-relation queries the response was YES. [2025-03-09 06:41:37,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130926 conditions, 31539 events. 16136/31539 cut-off events. For 158136/159447 co-relation queries the response was YES. Maximal size of possible extension queue 1109. Compared 289884 event pairs, 2298 based on Foata normal form. 978/32417 useless extension candidates. Maximal degree in co-relation 117981. Up to 10010 conditions per place. [2025-03-09 06:41:37,668 INFO L140 encePairwiseOnDemand]: 55/70 looper letters, 495 selfloop transitions, 145 changer transitions 0/674 dead transitions. [2025-03-09 06:41:37,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 674 transitions, 6851 flow [2025-03-09 06:41:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-09 06:41:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-03-09 06:41:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1196 transitions. [2025-03-09 06:41:37,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5511520737327189 [2025-03-09 06:41:37,669 INFO L175 Difference]: Start difference. First operand has 184 places, 172 transitions, 1471 flow. Second operand 31 states and 1196 transitions. [2025-03-09 06:41:37,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 674 transitions, 6851 flow [2025-03-09 06:41:38,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 674 transitions, 6682 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-03-09 06:41:38,592 INFO L231 Difference]: Finished difference. Result has 223 places, 288 transitions, 3087 flow [2025-03-09 06:41:38,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3087, PETRI_PLACES=223, PETRI_TRANSITIONS=288} [2025-03-09 06:41:38,593 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 157 predicate places. [2025-03-09 06:41:38,593 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 288 transitions, 3087 flow [2025-03-09 06:41:38,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.22222222222222) internal successors, (254), 9 states have internal predecessors, (254), 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 06:41:38,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:38,593 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] [2025-03-09 06:41:38,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-09 06:41:38,593 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:38,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:38,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2128038507, now seen corresponding path program 1 times [2025-03-09 06:41:38,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:38,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450513648] [2025-03-09 06:41:38,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:38,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:38,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:41:38,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:41:38,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:38,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:41:38,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:38,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450513648] [2025-03-09 06:41:38,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450513648] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:38,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:38,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:38,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734526294] [2025-03-09 06:41:38,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:38,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:38,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:38,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:38,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:38,649 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2025-03-09 06:41:38,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 288 transitions, 3087 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 06:41:38,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:38,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2025-03-09 06:41:38,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:41,864 INFO L124 PetriNetUnfolderBase]: 11360/24686 cut-off events. [2025-03-09 06:41:41,864 INFO L125 PetriNetUnfolderBase]: For 159367/161671 co-relation queries the response was YES. [2025-03-09 06:41:42,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107283 conditions, 24686 events. 11360/24686 cut-off events. For 159367/161671 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 239746 event pairs, 4068 based on Foata normal form. 899/25454 useless extension candidates. Maximal degree in co-relation 100728. Up to 10178 conditions per place. [2025-03-09 06:41:42,165 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 295 selfloop transitions, 36 changer transitions 0/396 dead transitions. [2025-03-09 06:41:42,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 396 transitions, 4932 flow [2025-03-09 06:41:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2025-03-09 06:41:42,166 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6821428571428572 [2025-03-09 06:41:42,166 INFO L175 Difference]: Start difference. First operand has 223 places, 288 transitions, 3087 flow. Second operand 4 states and 191 transitions. [2025-03-09 06:41:42,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 396 transitions, 4932 flow [2025-03-09 06:41:43,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 396 transitions, 4674 flow, removed 34 selfloop flow, removed 11 redundant places. [2025-03-09 06:41:43,045 INFO L231 Difference]: Finished difference. Result has 214 places, 286 transitions, 2898 flow [2025-03-09 06:41:43,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2826, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2898, PETRI_PLACES=214, PETRI_TRANSITIONS=286} [2025-03-09 06:41:43,046 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 148 predicate places. [2025-03-09 06:41:43,046 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 286 transitions, 2898 flow [2025-03-09 06:41:43,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 06:41:43,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:43,047 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] [2025-03-09 06:41:43,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-09 06:41:43,047 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:43,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2128039500, now seen corresponding path program 1 times [2025-03-09 06:41:43,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:43,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763322379] [2025-03-09 06:41:43,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:43,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:43,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:41:43,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:41:43,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:43,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:41:43,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:43,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763322379] [2025-03-09 06:41:43,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763322379] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:43,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:43,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:41:43,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099202173] [2025-03-09 06:41:43,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:43,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:41:43,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:43,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:41:43,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:41:43,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2025-03-09 06:41:43,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 286 transitions, 2898 flow. Second operand has 9 states, 9 states have (on average 28.22222222222222) internal successors, (254), 9 states have internal predecessors, (254), 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 06:41:43,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:43,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2025-03-09 06:41:43,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:49,705 INFO L124 PetriNetUnfolderBase]: 23812/46316 cut-off events. [2025-03-09 06:41:49,706 INFO L125 PetriNetUnfolderBase]: For 303105/305288 co-relation queries the response was YES. [2025-03-09 06:41:50,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205774 conditions, 46316 events. 23812/46316 cut-off events. For 303105/305288 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 448550 event pairs, 3731 based on Foata normal form. 1390/47579 useless extension candidates. Maximal degree in co-relation 182981. Up to 17458 conditions per place. [2025-03-09 06:41:50,350 INFO L140 encePairwiseOnDemand]: 55/70 looper letters, 613 selfloop transitions, 197 changer transitions 0/850 dead transitions. [2025-03-09 06:41:50,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 850 transitions, 9666 flow [2025-03-09 06:41:50,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-09 06:41:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-03-09 06:41:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1189 transitions. [2025-03-09 06:41:50,351 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5479262672811059 [2025-03-09 06:41:50,352 INFO L175 Difference]: Start difference. First operand has 214 places, 286 transitions, 2898 flow. Second operand 31 states and 1189 transitions. [2025-03-09 06:41:50,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 850 transitions, 9666 flow [2025-03-09 06:41:52,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 850 transitions, 9477 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-03-09 06:41:52,835 INFO L231 Difference]: Finished difference. Result has 255 places, 402 transitions, 4788 flow [2025-03-09 06:41:52,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=4788, PETRI_PLACES=255, PETRI_TRANSITIONS=402} [2025-03-09 06:41:52,835 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 189 predicate places. [2025-03-09 06:41:52,836 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 402 transitions, 4788 flow [2025-03-09 06:41:52,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.22222222222222) internal successors, (254), 9 states have internal predecessors, (254), 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 06:41:52,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:52,836 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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 06:41:52,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-09 06:41:52,836 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:52,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:52,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1118162477, now seen corresponding path program 1 times [2025-03-09 06:41:52,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:52,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980406819] [2025-03-09 06:41:52,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:52,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:41:52,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:41:52,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:52,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:52,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:52,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980406819] [2025-03-09 06:41:52,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980406819] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:52,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751474851] [2025-03-09 06:41:52,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:52,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:52,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:52,917 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:41:52,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 06:41:52,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:41:52,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:41:52,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:52,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:52,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 06:41:52,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:53,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:53,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:53,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751474851] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:53,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:53,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-03-09 06:41:53,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547720334] [2025-03-09 06:41:53,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:53,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 06:41:53,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:53,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 06:41:53,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2025-03-09 06:41:53,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2025-03-09 06:41:53,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 402 transitions, 4788 flow. Second operand has 20 states, 20 states have (on average 35.05) internal successors, (701), 20 states have internal predecessors, (701), 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 06:41:53,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:53,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2025-03-09 06:41:53,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:57,531 INFO L124 PetriNetUnfolderBase]: 12411/27996 cut-off events. [2025-03-09 06:41:57,531 INFO L125 PetriNetUnfolderBase]: For 215321/217922 co-relation queries the response was YES. [2025-03-09 06:41:57,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128499 conditions, 27996 events. 12411/27996 cut-off events. For 215321/217922 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 282599 event pairs, 6454 based on Foata normal form. 1058/28917 useless extension candidates. Maximal degree in co-relation 119732. Up to 16160 conditions per place. [2025-03-09 06:41:57,934 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 386 selfloop transitions, 20 changer transitions 178/683 dead transitions. [2025-03-09 06:41:57,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 683 transitions, 9486 flow [2025-03-09 06:41:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:41:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:41:57,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 436 transitions. [2025-03-09 06:41:57,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6228571428571429 [2025-03-09 06:41:57,936 INFO L175 Difference]: Start difference. First operand has 255 places, 402 transitions, 4788 flow. Second operand 10 states and 436 transitions. [2025-03-09 06:41:57,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 683 transitions, 9486 flow [2025-03-09 06:41:59,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 683 transitions, 9110 flow, removed 60 selfloop flow, removed 12 redundant places. [2025-03-09 06:41:59,776 INFO L231 Difference]: Finished difference. Result has 256 places, 407 transitions, 4659 flow [2025-03-09 06:41:59,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=4522, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4659, PETRI_PLACES=256, PETRI_TRANSITIONS=407} [2025-03-09 06:41:59,777 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 190 predicate places. [2025-03-09 06:41:59,777 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 407 transitions, 4659 flow [2025-03-09 06:41:59,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 35.05) internal successors, (701), 20 states have internal predecessors, (701), 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 06:41:59,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:59,778 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:59,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 06:41:59,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:59,978 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-09 06:41:59,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:59,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1730522072, now seen corresponding path program 2 times [2025-03-09 06:41:59,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:59,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711038716] [2025-03-09 06:41:59,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:41:59,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:59,983 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-09 06:41:59,989 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 06:41:59,992 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:41:59,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:00,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:00,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711038716] [2025-03-09 06:42:00,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711038716] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:00,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149266363] [2025-03-09 06:42:00,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:42:00,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:00,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:00,276 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:00,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 06:42:00,319 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-09 06:42:00,334 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 06:42:00,334 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:42:00,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:00,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-09 06:42:00,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:00,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 06:42:00,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-09 06:42:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:00,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:00,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-09 06:42:00,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-09 06:42:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:00,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149266363] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:00,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:00,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2025-03-09 06:42:00,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730215643] [2025-03-09 06:42:00,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:00,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-09 06:42:00,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:00,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-09 06:42:00,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2025-03-09 06:42:00,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 70 [2025-03-09 06:42:00,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 407 transitions, 4659 flow. Second operand has 26 states, 26 states have (on average 31.807692307692307) internal successors, (827), 26 states have internal predecessors, (827), 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 06:42:00,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:00,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 70 [2025-03-09 06:42:00,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:13,572 INFO L124 PetriNetUnfolderBase]: 31416/68360 cut-off events. [2025-03-09 06:42:13,572 INFO L125 PetriNetUnfolderBase]: For 518842/526892 co-relation queries the response was YES. [2025-03-09 06:42:14,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312073 conditions, 68360 events. 31416/68360 cut-off events. For 518842/526892 co-relation queries the response was YES. Maximal size of possible extension queue 1799. Compared 753017 event pairs, 4597 based on Foata normal form. 3243/71485 useless extension candidates. Maximal degree in co-relation 298524. Up to 8679 conditions per place. [2025-03-09 06:42:14,928 INFO L140 encePairwiseOnDemand]: 56/70 looper letters, 1555 selfloop transitions, 178 changer transitions 192/2022 dead transitions. [2025-03-09 06:42:14,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 2022 transitions, 26665 flow [2025-03-09 06:42:14,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-09 06:42:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2025-03-09 06:42:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1555 transitions. [2025-03-09 06:42:14,930 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6346938775510204 [2025-03-09 06:42:14,930 INFO L175 Difference]: Start difference. First operand has 256 places, 407 transitions, 4659 flow. Second operand 35 states and 1555 transitions. [2025-03-09 06:42:14,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 2022 transitions, 26665 flow