./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-1.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/parallel-misc-1.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 faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:39:57,267 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:39:57,314 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:39:57,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:39:57,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:39:57,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:39:57,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:39:57,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:39:57,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:39:57,334 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:39:57,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:39:57,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:39:57,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:39:57,334 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:39:57,334 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:39:57,334 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:39:57,334 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:39:57,335 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:39:57,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:39:57,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:39:57,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:39:57,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:39:57,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:39:57,335 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:39:57,335 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:39:57,335 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:39:57,335 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:39:57,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:39:57,335 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:39:57,336 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:39:57,336 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:39:57,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:39:57,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:39:57,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:39:57,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:39:57,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:39:57,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:39:57,336 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:39:57,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:39:57,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:39:57,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:39:57,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:39:57,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:39:57,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:39:57,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:39:57,337 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 -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2025-03-09 06:39:57,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:39:57,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:39:57,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:39:57,555 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:39:57,556 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:39:57,558 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2025-03-09 06:39:58,691 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a11f007/0ef325eb9caa4ac1a690be334191135e/FLAG62c95384c [2025-03-09 06:39:58,890 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:39:58,891 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2025-03-09 06:39:58,912 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a11f007/0ef325eb9caa4ac1a690be334191135e/FLAG62c95384c [2025-03-09 06:39:59,249 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a11f007/0ef325eb9caa4ac1a690be334191135e [2025-03-09 06:39:59,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:39:59,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:39:59,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:39:59,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:39:59,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:39:59,256 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b49333d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59, skipping insertion in model container [2025-03-09 06:39:59,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,268 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:39:59,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:39:59,407 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:39:59,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:39:59,449 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:39:59,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59 WrapperNode [2025-03-09 06:39:59,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:39:59,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:39:59,452 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:39:59,452 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:39:59,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,490 INFO L138 Inliner]: procedures = 22, calls = 32, calls flagged for inlining = 18, calls inlined = 32, statements flattened = 388 [2025-03-09 06:39:59,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:39:59,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:39:59,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:39:59,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:39:59,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,505 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,523 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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 06:39:59,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,535 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,536 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:39:59,543 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:39:59,547 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:39:59,547 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:39:59,548 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (1/1) ... [2025-03-09 06:39:59,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:39:59,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:39:59,577 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 06:39:59,579 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 06:39:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:39:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:39:59,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:39:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:39:59,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:39:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:39:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:39:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:39:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:39:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:39:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:39:59,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:39:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:39:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:39:59,596 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 06:39:59,668 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:39:59,669 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:40:00,113 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:40:00,113 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:40:00,341 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:40:00,342 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:40:00,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:40:00 BoogieIcfgContainer [2025-03-09 06:40:00,342 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:40:00,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:40:00,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:40:00,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:40:00,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:39:59" (1/3) ... [2025-03-09 06:40:00,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4405f102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:40:00, skipping insertion in model container [2025-03-09 06:40:00,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:59" (2/3) ... [2025-03-09 06:40:00,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4405f102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:40:00, skipping insertion in model container [2025-03-09 06:40:00,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:40:00" (3/3) ... [2025-03-09 06:40:00,348 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2025-03-09 06:40:00,359 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:40:00,360 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-1.wvr.c that has 3 procedures, 160 locations, 1 initial locations, 3 loop locations, and 54 error locations. [2025-03-09 06:40:00,360 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:40:00,423 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 06:40:00,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 374 flow [2025-03-09 06:40:00,505 INFO L124 PetriNetUnfolderBase]: 21/178 cut-off events. [2025-03-09 06:40:00,506 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:40:00,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 21/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 847 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2025-03-09 06:40:00,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 180 transitions, 374 flow [2025-03-09 06:40:00,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 176 transitions, 361 flow [2025-03-09 06:40:00,529 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:40:00,538 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;@58e4c54a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:40:00,539 INFO L334 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2025-03-09 06:40:00,543 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:40:00,544 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:40:00,545 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:40:00,545 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:00,545 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:40:00,546 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:00,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:00,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1166425, now seen corresponding path program 1 times [2025-03-09 06:40:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:00,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444067176] [2025-03-09 06:40:00,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:00,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:00,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:40:00,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:40:00,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:00,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:00,725 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 06:40:00,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:00,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444067176] [2025-03-09 06:40:00,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444067176] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:00,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:00,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:40:00,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840531770] [2025-03-09 06:40:00,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:00,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:40:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:00,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:40:00,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:40:00,765 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2025-03-09 06:40:00,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 176 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 06:40:00,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:00,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2025-03-09 06:40:00,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:01,363 INFO L124 PetriNetUnfolderBase]: 2272/5770 cut-off events. [2025-03-09 06:40:01,364 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2025-03-09 06:40:01,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9090 conditions, 5770 events. 2272/5770 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 53366 event pairs, 1252 based on Foata normal form. 1/4377 useless extension candidates. Maximal degree in co-relation 8938. Up to 3248 conditions per place. [2025-03-09 06:40:01,396 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 56 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2025-03-09 06:40:01,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 175 transitions, 479 flow [2025-03-09 06:40:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:40:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:40:01,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 529 transitions. [2025-03-09 06:40:01,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7347222222222223 [2025-03-09 06:40:01,413 INFO L175 Difference]: Start difference. First operand has 162 places, 176 transitions, 361 flow. Second operand 4 states and 529 transitions. [2025-03-09 06:40:01,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 175 transitions, 479 flow [2025-03-09 06:40:01,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 175 transitions, 474 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:40:01,422 INFO L231 Difference]: Finished difference. Result has 161 places, 175 transitions, 362 flow [2025-03-09 06:40:01,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=161, PETRI_TRANSITIONS=175} [2025-03-09 06:40:01,429 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -1 predicate places. [2025-03-09 06:40:01,429 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 175 transitions, 362 flow [2025-03-09 06:40:01,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 06:40:01,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:01,429 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-09 06:40:01,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:40:01,430 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:01,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:01,431 INFO L85 PathProgramCache]: Analyzing trace with hash 36160197, now seen corresponding path program 1 times [2025-03-09 06:40:01,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:01,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103184797] [2025-03-09 06:40:01,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:01,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:01,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 06:40:01,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 06:40:01,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:01,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:01,517 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 06:40:01,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:01,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103184797] [2025-03-09 06:40:01,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103184797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:01,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:01,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:40:01,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104880519] [2025-03-09 06:40:01,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:01,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:40:01,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:01,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:40:01,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:40:01,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2025-03-09 06:40:01,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 175 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 06:40:01,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:01,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2025-03-09 06:40:01,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:02,066 INFO L124 PetriNetUnfolderBase]: 2273/5774 cut-off events. [2025-03-09 06:40:02,067 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-03-09 06:40:02,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9081 conditions, 5774 events. 2273/5774 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 53386 event pairs, 1252 based on Foata normal form. 1/4381 useless extension candidates. Maximal degree in co-relation 9053. Up to 3253 conditions per place. [2025-03-09 06:40:02,109 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 59 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2025-03-09 06:40:02,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 178 transitions, 500 flow [2025-03-09 06:40:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:40:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:40:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 532 transitions. [2025-03-09 06:40:02,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7388888888888889 [2025-03-09 06:40:02,115 INFO L175 Difference]: Start difference. First operand has 161 places, 175 transitions, 362 flow. Second operand 4 states and 532 transitions. [2025-03-09 06:40:02,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 178 transitions, 500 flow [2025-03-09 06:40:02,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 178 transitions, 486 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:40:02,121 INFO L231 Difference]: Finished difference. Result has 163 places, 178 transitions, 381 flow [2025-03-09 06:40:02,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=163, PETRI_TRANSITIONS=178} [2025-03-09 06:40:02,122 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 1 predicate places. [2025-03-09 06:40:02,122 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 178 transitions, 381 flow [2025-03-09 06:40:02,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 06:40:02,123 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:02,123 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:40:02,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:40:02,123 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:02,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:02,127 INFO L85 PathProgramCache]: Analyzing trace with hash -787206697, now seen corresponding path program 1 times [2025-03-09 06:40:02,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:02,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621926463] [2025-03-09 06:40:02,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:02,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:02,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:40:02,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:40:02,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:02,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:02,237 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 06:40:02,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621926463] [2025-03-09 06:40:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621926463] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:40:02,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749902893] [2025-03-09 06:40:02,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:02,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:40:02,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:40:02,240 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 06:40:02,242 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 06:40:02,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:40:02,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:40:02,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:02,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:02,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:40:02,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:40:02,328 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 06:40:02,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:40:02,367 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 06:40:02,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749902893] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:40:02,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:40:02,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-09 06:40:02,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268270914] [2025-03-09 06:40:02,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:40:02,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:40:02,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:02,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:40:02,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:40:02,389 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2025-03-09 06:40:02,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 178 transitions, 381 flow. Second operand has 10 states, 10 states have (on average 118.0) internal successors, (1180), 10 states have internal predecessors, (1180), 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 06:40:02,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:02,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2025-03-09 06:40:02,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:02,916 INFO L124 PetriNetUnfolderBase]: 2276/5786 cut-off events. [2025-03-09 06:40:02,916 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-03-09 06:40:02,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9117 conditions, 5786 events. 2276/5786 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 53537 event pairs, 1252 based on Foata normal form. 0/4389 useless extension candidates. Maximal degree in co-relation 9060. Up to 3256 conditions per place. [2025-03-09 06:40:02,957 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 59 selfloop transitions, 13 changer transitions 0/187 dead transitions. [2025-03-09 06:40:02,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 187 transitions, 561 flow [2025-03-09 06:40:02,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:40:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:40:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1245 transitions. [2025-03-09 06:40:02,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2025-03-09 06:40:02,960 INFO L175 Difference]: Start difference. First operand has 163 places, 178 transitions, 381 flow. Second operand 10 states and 1245 transitions. [2025-03-09 06:40:02,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 187 transitions, 561 flow [2025-03-09 06:40:02,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:40:02,966 INFO L231 Difference]: Finished difference. Result has 174 places, 187 transitions, 458 flow [2025-03-09 06:40:02,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=458, PETRI_PLACES=174, PETRI_TRANSITIONS=187} [2025-03-09 06:40:02,968 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2025-03-09 06:40:02,968 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 187 transitions, 458 flow [2025-03-09 06:40:02,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.0) internal successors, (1180), 10 states have internal predecessors, (1180), 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 06:40:02,969 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:02,970 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:40:02,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 06:40:03,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:40:03,174 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:03,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:03,174 INFO L85 PathProgramCache]: Analyzing trace with hash -449276280, now seen corresponding path program 1 times [2025-03-09 06:40:03,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:03,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048145594] [2025-03-09 06:40:03,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:03,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:40:03,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:40:03,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:03,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:03,250 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 06:40:03,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:03,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048145594] [2025-03-09 06:40:03,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048145594] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:03,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:03,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:40:03,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582901109] [2025-03-09 06:40:03,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:03,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:40:03,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:03,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:40:03,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:40:03,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2025-03-09 06:40:03,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 187 transitions, 458 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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 06:40:03,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:03,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2025-03-09 06:40:03,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:04,061 INFO L124 PetriNetUnfolderBase]: 5362/11192 cut-off events. [2025-03-09 06:40:04,062 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-03-09 06:40:04,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19239 conditions, 11192 events. 5362/11192 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 102410 event pairs, 1156 based on Foata normal form. 416/9273 useless extension candidates. Maximal degree in co-relation 19203. Up to 3742 conditions per place. [2025-03-09 06:40:04,120 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 143 selfloop transitions, 20 changer transitions 0/255 dead transitions. [2025-03-09 06:40:04,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 255 transitions, 924 flow [2025-03-09 06:40:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:40:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:40:04,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2025-03-09 06:40:04,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7541666666666667 [2025-03-09 06:40:04,124 INFO L175 Difference]: Start difference. First operand has 174 places, 187 transitions, 458 flow. Second operand 4 states and 543 transitions. [2025-03-09 06:40:04,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 255 transitions, 924 flow [2025-03-09 06:40:04,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 255 transitions, 894 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-03-09 06:40:04,128 INFO L231 Difference]: Finished difference. Result has 173 places, 195 transitions, 564 flow [2025-03-09 06:40:04,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=564, PETRI_PLACES=173, PETRI_TRANSITIONS=195} [2025-03-09 06:40:04,129 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 11 predicate places. [2025-03-09 06:40:04,129 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 195 transitions, 564 flow [2025-03-09 06:40:04,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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 06:40:04,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:04,129 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:40:04,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:40:04,129 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:04,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:04,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1042661634, now seen corresponding path program 1 times [2025-03-09 06:40:04,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:04,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468908512] [2025-03-09 06:40:04,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:04,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:04,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:40:04,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:40:04,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:04,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:04,209 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 06:40:04,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:04,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468908512] [2025-03-09 06:40:04,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468908512] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:04,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:04,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:40:04,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860809661] [2025-03-09 06:40:04,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:04,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:40:04,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:04,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:40:04,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:40:04,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-09 06:40:04,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 195 transitions, 564 flow. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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 06:40:04,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:04,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-09 06:40:04,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:05,681 INFO L124 PetriNetUnfolderBase]: 9410/21245 cut-off events. [2025-03-09 06:40:05,682 INFO L125 PetriNetUnfolderBase]: For 5944/6027 co-relation queries the response was YES. [2025-03-09 06:40:05,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41025 conditions, 21245 events. 9410/21245 cut-off events. For 5944/6027 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 211289 event pairs, 1272 based on Foata normal form. 291/18164 useless extension candidates. Maximal degree in co-relation 40991. Up to 6364 conditions per place. [2025-03-09 06:40:05,806 INFO L140 encePairwiseOnDemand]: 161/180 looper letters, 203 selfloop transitions, 31 changer transitions 0/334 dead transitions. [2025-03-09 06:40:05,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 334 transitions, 1421 flow [2025-03-09 06:40:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:40:05,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:40:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2025-03-09 06:40:05,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7988888888888889 [2025-03-09 06:40:05,808 INFO L175 Difference]: Start difference. First operand has 173 places, 195 transitions, 564 flow. Second operand 5 states and 719 transitions. [2025-03-09 06:40:05,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 334 transitions, 1421 flow [2025-03-09 06:40:05,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 334 transitions, 1421 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:40:05,835 INFO L231 Difference]: Finished difference. Result has 181 places, 217 transitions, 826 flow [2025-03-09 06:40:05,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=826, PETRI_PLACES=181, PETRI_TRANSITIONS=217} [2025-03-09 06:40:05,837 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 19 predicate places. [2025-03-09 06:40:05,837 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 217 transitions, 826 flow [2025-03-09 06:40:05,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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 06:40:05,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:05,838 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:40:05,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:40:05,838 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:05,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1042629824, now seen corresponding path program 1 times [2025-03-09 06:40:05,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:05,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812101886] [2025-03-09 06:40:05,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:05,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:05,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:40:05,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:40:05,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:05,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:05,954 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 06:40:05,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:05,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812101886] [2025-03-09 06:40:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812101886] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:05,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:40:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061541121] [2025-03-09 06:40:05,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:05,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:40:05,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:05,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:40:05,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:40:05,958 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2025-03-09 06:40:05,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 217 transitions, 826 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 06:40:05,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:05,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2025-03-09 06:40:05,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:06,981 INFO L124 PetriNetUnfolderBase]: 6858/18027 cut-off events. [2025-03-09 06:40:06,981 INFO L125 PetriNetUnfolderBase]: For 11848/12295 co-relation queries the response was YES. [2025-03-09 06:40:07,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35496 conditions, 18027 events. 6858/18027 cut-off events. For 11848/12295 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 190258 event pairs, 4205 based on Foata normal form. 273/14971 useless extension candidates. Maximal degree in co-relation 35456. Up to 7489 conditions per place. [2025-03-09 06:40:07,083 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 122 selfloop transitions, 5 changer transitions 0/247 dead transitions. [2025-03-09 06:40:07,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 247 transitions, 1151 flow [2025-03-09 06:40:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:40:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:40:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 569 transitions. [2025-03-09 06:40:07,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7902777777777777 [2025-03-09 06:40:07,085 INFO L175 Difference]: Start difference. First operand has 181 places, 217 transitions, 826 flow. Second operand 4 states and 569 transitions. [2025-03-09 06:40:07,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 247 transitions, 1151 flow [2025-03-09 06:40:07,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 247 transitions, 1143 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-03-09 06:40:07,123 INFO L231 Difference]: Finished difference. Result has 186 places, 218 transitions, 849 flow [2025-03-09 06:40:07,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=849, PETRI_PLACES=186, PETRI_TRANSITIONS=218} [2025-03-09 06:40:07,126 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 24 predicate places. [2025-03-09 06:40:07,126 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 218 transitions, 849 flow [2025-03-09 06:40:07,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 06:40:07,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:07,126 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:40:07,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:40:07,126 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:07,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:07,127 INFO L85 PathProgramCache]: Analyzing trace with hash 158414676, now seen corresponding path program 1 times [2025-03-09 06:40:07,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:07,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045732352] [2025-03-09 06:40:07,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:07,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:07,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:40:07,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:40:07,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:07,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:07,197 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 06:40:07,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:07,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045732352] [2025-03-09 06:40:07,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045732352] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:07,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:07,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:40:07,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843189754] [2025-03-09 06:40:07,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:07,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:40:07,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:07,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:40:07,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:40:07,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2025-03-09 06:40:07,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 218 transitions, 849 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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 06:40:07,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:07,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2025-03-09 06:40:07,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:09,433 INFO L124 PetriNetUnfolderBase]: 15194/32932 cut-off events. [2025-03-09 06:40:09,433 INFO L125 PetriNetUnfolderBase]: For 29613/30978 co-relation queries the response was YES. [2025-03-09 06:40:09,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72437 conditions, 32932 events. 15194/32932 cut-off events. For 29613/30978 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 339385 event pairs, 4101 based on Foata normal form. 1830/29571 useless extension candidates. Maximal degree in co-relation 72395. Up to 9920 conditions per place. [2025-03-09 06:40:09,679 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 222 selfloop transitions, 20 changer transitions 0/338 dead transitions. [2025-03-09 06:40:09,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 338 transitions, 2043 flow [2025-03-09 06:40:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:40:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:40:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 541 transitions. [2025-03-09 06:40:09,680 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7513888888888889 [2025-03-09 06:40:09,680 INFO L175 Difference]: Start difference. First operand has 186 places, 218 transitions, 849 flow. Second operand 4 states and 541 transitions. [2025-03-09 06:40:09,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 338 transitions, 2043 flow [2025-03-09 06:40:09,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 338 transitions, 2040 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:40:09,929 INFO L231 Difference]: Finished difference. Result has 187 places, 226 transitions, 982 flow [2025-03-09 06:40:09,930 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=982, PETRI_PLACES=187, PETRI_TRANSITIONS=226} [2025-03-09 06:40:09,930 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 25 predicate places. [2025-03-09 06:40:09,930 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 226 transitions, 982 flow [2025-03-09 06:40:09,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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 06:40:09,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:09,930 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:40:09,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:40:09,930 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:09,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:09,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2037198128, now seen corresponding path program 1 times [2025-03-09 06:40:09,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:09,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016702138] [2025-03-09 06:40:09,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:09,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:09,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:40:09,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:40:09,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:09,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:09,976 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 06:40:09,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:09,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016702138] [2025-03-09 06:40:09,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016702138] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:09,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:09,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:40:09,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395159232] [2025-03-09 06:40:09,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:09,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:40:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:09,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:40:09,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:40:10,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-09 06:40:10,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 226 transitions, 982 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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 06:40:10,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:10,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-09 06:40:10,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:11,941 INFO L124 PetriNetUnfolderBase]: 12103/28384 cut-off events. [2025-03-09 06:40:11,942 INFO L125 PetriNetUnfolderBase]: For 29856/31162 co-relation queries the response was YES. [2025-03-09 06:40:12,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66970 conditions, 28384 events. 12103/28384 cut-off events. For 29856/31162 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 301193 event pairs, 2271 based on Foata normal form. 872/25422 useless extension candidates. Maximal degree in co-relation 66925. Up to 8600 conditions per place. [2025-03-09 06:40:12,084 INFO L140 encePairwiseOnDemand]: 164/180 looper letters, 226 selfloop transitions, 33 changer transitions 0/359 dead transitions. [2025-03-09 06:40:12,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 359 transitions, 2037 flow [2025-03-09 06:40:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:40:12,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:40:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2025-03-09 06:40:12,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7811111111111111 [2025-03-09 06:40:12,087 INFO L175 Difference]: Start difference. First operand has 187 places, 226 transitions, 982 flow. Second operand 5 states and 703 transitions. [2025-03-09 06:40:12,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 359 transitions, 2037 flow [2025-03-09 06:40:12,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 359 transitions, 2037 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:40:12,199 INFO L231 Difference]: Finished difference. Result has 191 places, 230 transitions, 1060 flow [2025-03-09 06:40:12,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1060, PETRI_PLACES=191, PETRI_TRANSITIONS=230} [2025-03-09 06:40:12,200 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 29 predicate places. [2025-03-09 06:40:12,200 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 230 transitions, 1060 flow [2025-03-09 06:40:12,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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 06:40:12,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:12,201 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:40:12,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:40:12,201 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:12,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:12,201 INFO L85 PathProgramCache]: Analyzing trace with hash 615888900, now seen corresponding path program 1 times [2025-03-09 06:40:12,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:12,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58516808] [2025-03-09 06:40:12,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:12,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:12,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:40:12,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:40:12,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:12,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:12,253 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 06:40:12,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:12,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58516808] [2025-03-09 06:40:12,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58516808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:12,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:12,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:40:12,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540154756] [2025-03-09 06:40:12,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:12,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:40:12,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:12,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:40:12,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:40:12,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-09 06:40:12,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 230 transitions, 1060 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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 06:40:12,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:12,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-09 06:40:12,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:16,555 INFO L124 PetriNetUnfolderBase]: 25291/59940 cut-off events. [2025-03-09 06:40:16,555 INFO L125 PetriNetUnfolderBase]: For 75412/77886 co-relation queries the response was YES. [2025-03-09 06:40:16,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142911 conditions, 59940 events. 25291/59940 cut-off events. For 75412/77886 co-relation queries the response was YES. Maximal size of possible extension queue 1565. Compared 687465 event pairs, 3922 based on Foata normal form. 2217/54496 useless extension candidates. Maximal degree in co-relation 142864. Up to 16606 conditions per place. [2025-03-09 06:40:17,091 INFO L140 encePairwiseOnDemand]: 161/180 looper letters, 307 selfloop transitions, 31 changer transitions 0/446 dead transitions. [2025-03-09 06:40:17,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 446 transitions, 3037 flow [2025-03-09 06:40:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:40:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:40:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 715 transitions. [2025-03-09 06:40:17,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7944444444444444 [2025-03-09 06:40:17,093 INFO L175 Difference]: Start difference. First operand has 191 places, 230 transitions, 1060 flow. Second operand 5 states and 715 transitions. [2025-03-09 06:40:17,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 446 transitions, 3037 flow [2025-03-09 06:40:17,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 446 transitions, 3037 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:40:17,290 INFO L231 Difference]: Finished difference. Result has 199 places, 252 transitions, 1322 flow [2025-03-09 06:40:17,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1322, PETRI_PLACES=199, PETRI_TRANSITIONS=252} [2025-03-09 06:40:17,291 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 37 predicate places. [2025-03-09 06:40:17,291 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 252 transitions, 1322 flow [2025-03-09 06:40:17,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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 06:40:17,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:17,291 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:40:17,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:40:17,291 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:17,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:17,291 INFO L85 PathProgramCache]: Analyzing trace with hash 615920710, now seen corresponding path program 1 times [2025-03-09 06:40:17,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:17,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825290465] [2025-03-09 06:40:17,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:17,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:17,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:40:17,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:40:17,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:17,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:17,346 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 06:40:17,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:17,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825290465] [2025-03-09 06:40:17,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825290465] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:17,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:17,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:40:17,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260005951] [2025-03-09 06:40:17,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:17,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:40:17,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:17,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:40:17,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:40:17,350 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2025-03-09 06:40:17,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 252 transitions, 1322 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 06:40:17,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:17,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2025-03-09 06:40:17,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:21,550 INFO L124 PetriNetUnfolderBase]: 20052/51945 cut-off events. [2025-03-09 06:40:21,550 INFO L125 PetriNetUnfolderBase]: For 81010/83277 co-relation queries the response was YES. [2025-03-09 06:40:21,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128384 conditions, 51945 events. 20052/51945 cut-off events. For 81010/83277 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 618785 event pairs, 12112 based on Foata normal form. 1317/46633 useless extension candidates. Maximal degree in co-relation 128331. Up to 21999 conditions per place. [2025-03-09 06:40:21,954 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 176 selfloop transitions, 5 changer transitions 0/309 dead transitions. [2025-03-09 06:40:21,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 309 transitions, 2052 flow [2025-03-09 06:40:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:40:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:40:21,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2025-03-09 06:40:21,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2025-03-09 06:40:21,956 INFO L175 Difference]: Start difference. First operand has 199 places, 252 transitions, 1322 flow. Second operand 4 states and 570 transitions. [2025-03-09 06:40:21,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 309 transitions, 2052 flow [2025-03-09 06:40:22,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 309 transitions, 2044 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-03-09 06:40:22,315 INFO L231 Difference]: Finished difference. Result has 204 places, 253 transitions, 1345 flow [2025-03-09 06:40:22,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1345, PETRI_PLACES=204, PETRI_TRANSITIONS=253} [2025-03-09 06:40:22,315 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 42 predicate places. [2025-03-09 06:40:22,316 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 253 transitions, 1345 flow [2025-03-09 06:40:22,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 06:40:22,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:22,316 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:40:22,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:40:22,316 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:22,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:22,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1271367293, now seen corresponding path program 1 times [2025-03-09 06:40:22,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:22,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528047602] [2025-03-09 06:40:22,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:22,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:22,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:40:22,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:40:22,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:22,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:22,401 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 06:40:22,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:22,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528047602] [2025-03-09 06:40:22,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528047602] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:22,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:22,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:40:22,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977235876] [2025-03-09 06:40:22,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:22,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:40:22,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:22,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:40:22,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:40:22,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-09 06:40:22,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 253 transitions, 1345 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 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 06:40:22,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:22,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-09 06:40:22,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:31,835 INFO L124 PetriNetUnfolderBase]: 51774/110938 cut-off events. [2025-03-09 06:40:31,835 INFO L125 PetriNetUnfolderBase]: For 168878/176085 co-relation queries the response was YES. [2025-03-09 06:40:32,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289604 conditions, 110938 events. 51774/110938 cut-off events. For 168878/176085 co-relation queries the response was YES. Maximal size of possible extension queue 2723. Compared 1287873 event pairs, 12955 based on Foata normal form. 3741/107637 useless extension candidates. Maximal degree in co-relation 289549. Up to 29284 conditions per place. [2025-03-09 06:40:33,031 INFO L140 encePairwiseOnDemand]: 159/180 looper letters, 428 selfloop transitions, 44 changer transitions 0/584 dead transitions. [2025-03-09 06:40:33,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 584 transitions, 4258 flow [2025-03-09 06:40:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:40:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:40:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 988 transitions. [2025-03-09 06:40:33,034 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7841269841269841 [2025-03-09 06:40:33,034 INFO L175 Difference]: Start difference. First operand has 204 places, 253 transitions, 1345 flow. Second operand 7 states and 988 transitions. [2025-03-09 06:40:33,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 584 transitions, 4258 flow [2025-03-09 06:40:33,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 584 transitions, 4255 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:40:33,947 INFO L231 Difference]: Finished difference. Result has 213 places, 277 transitions, 1646 flow [2025-03-09 06:40:33,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1646, PETRI_PLACES=213, PETRI_TRANSITIONS=277} [2025-03-09 06:40:33,948 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 51 predicate places. [2025-03-09 06:40:33,948 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 277 transitions, 1646 flow [2025-03-09 06:40:33,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 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 06:40:33,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:33,948 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:40:33,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:40:33,948 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:33,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:33,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1912657212, now seen corresponding path program 1 times [2025-03-09 06:40:33,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:33,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338862228] [2025-03-09 06:40:33,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:33,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:33,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:40:33,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:40:33,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:33,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:34,001 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 06:40:34,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:34,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338862228] [2025-03-09 06:40:34,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338862228] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:34,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:34,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:40:34,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912530909] [2025-03-09 06:40:34,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:34,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:40:34,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:34,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:40:34,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:40:34,052 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-09 06:40:34,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 277 transitions, 1646 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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 06:40:34,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:34,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-09 06:40:34,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:41,817 INFO L124 PetriNetUnfolderBase]: 37516/89754 cut-off events. [2025-03-09 06:40:41,818 INFO L125 PetriNetUnfolderBase]: For 191020/196422 co-relation queries the response was YES. [2025-03-09 06:40:42,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240258 conditions, 89754 events. 37516/89754 cut-off events. For 191020/196422 co-relation queries the response was YES. Maximal size of possible extension queue 2383. Compared 1098676 event pairs, 6723 based on Foata normal form. 3185/83326 useless extension candidates. Maximal degree in co-relation 240197. Up to 26636 conditions per place. [2025-03-09 06:40:42,866 INFO L140 encePairwiseOnDemand]: 164/180 looper letters, 344 selfloop transitions, 33 changer transitions 0/497 dead transitions. [2025-03-09 06:40:42,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 497 transitions, 4065 flow [2025-03-09 06:40:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:40:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:40:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2025-03-09 06:40:42,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7766666666666666 [2025-03-09 06:40:42,868 INFO L175 Difference]: Start difference. First operand has 213 places, 277 transitions, 1646 flow. Second operand 5 states and 699 transitions. [2025-03-09 06:40:42,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 497 transitions, 4065 flow [2025-03-09 06:40:44,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 497 transitions, 4065 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:40:44,101 INFO L231 Difference]: Finished difference. Result has 217 places, 281 transitions, 1724 flow [2025-03-09 06:40:44,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1724, PETRI_PLACES=217, PETRI_TRANSITIONS=281} [2025-03-09 06:40:44,102 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 55 predicate places. [2025-03-09 06:40:44,102 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 281 transitions, 1724 flow [2025-03-09 06:40:44,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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 06:40:44,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:44,102 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:40:44,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:40:44,102 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-09 06:40:44,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:44,103 INFO L85 PathProgramCache]: Analyzing trace with hash 530009426, now seen corresponding path program 1 times [2025-03-09 06:40:44,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:44,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021670127] [2025-03-09 06:40:44,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:44,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:44,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:40:44,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:40:44,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:44,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:44,301 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 06:40:44,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:44,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021670127] [2025-03-09 06:40:44,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021670127] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:40:44,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836217054] [2025-03-09 06:40:44,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:44,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:40:44,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:40:44,303 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 06:40:44,305 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 06:40:44,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:40:44,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:40:44,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:44,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:44,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-09 06:40:44,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:40:44,383 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 06:40:44,432 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 06:40:44,443 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 06:40:44,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:40:44,495 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 06:40:44,500 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 06:40:44,508 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 06:40:44,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836217054] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:40:44,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:40:44,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-09 06:40:44,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823264693] [2025-03-09 06:40:44,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:40:44,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:40:44,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:44,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:40:44,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:40:44,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 180 [2025-03-09 06:40:44,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 281 transitions, 1724 flow. Second operand has 10 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 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 06:40:44,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:44,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 180 [2025-03-09 06:40:44,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand