./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:56:38,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:56:38,129 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:56:38,135 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:56:38,136 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:56:38,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:56:38,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:56:38,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:56:38,160 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:56:38,161 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:56:38,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:56:38,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:56:38,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:56:38,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:56:38,162 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:56:38,162 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:56:38,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:56:38,163 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:56:38,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:56:38,163 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:56:38,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:56:38,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:56:38,163 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:56:38,163 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:56:38,163 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:56:38,163 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:56:38,163 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:56:38,163 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:56:38,164 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:56:38,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:56:38,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:56:38,164 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:56:38,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:56:38,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:56:38,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:56:38,165 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:56:38,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:56:38,166 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 [2025-01-10 06:56:38,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:56:38,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:56:38,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:56:38,424 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:56:38,424 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:56:38,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-01-10 06:56:39,614 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0972e0110/9a0d4af033b2461fa5a749a1e3a5d05b/FLAG4e9eca770 [2025-01-10 06:56:39,849 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:56:39,850 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-01-10 06:56:39,857 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0972e0110/9a0d4af033b2461fa5a749a1e3a5d05b/FLAG4e9eca770 [2025-01-10 06:56:40,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0972e0110/9a0d4af033b2461fa5a749a1e3a5d05b [2025-01-10 06:56:40,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:56:40,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:56:40,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:56:40,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:56:40,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:56:40,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec176d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40, skipping insertion in model container [2025-01-10 06:56:40,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,219 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:56:40,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:56:40,338 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:56:40,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:56:40,356 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:56:40,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40 WrapperNode [2025-01-10 06:56:40,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:56:40,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:56:40,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:56:40,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:56:40,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,380 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2025-01-10 06:56:40,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:56:40,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:56:40,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:56:40,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:56:40,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,394 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,408 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-10 06:56:40,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,411 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,414 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,415 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:56:40,416 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:56:40,416 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:56:40,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:56:40,417 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (1/1) ... [2025-01-10 06:56:40,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:56:40,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:40,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 06:56:40,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 06:56:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:56:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:56:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:56:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:56:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:56:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:56:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:56:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:56:40,474 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:56:40,538 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:56:40,539 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:56:40,649 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:56:40,649 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:56:40,722 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:56:40,722 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:56:40,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:56:40 BoogieIcfgContainer [2025-01-10 06:56:40,722 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:56:40,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:56:40,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:56:40,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:56:40,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:56:40" (1/3) ... [2025-01-10 06:56:40,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9f19ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:56:40, skipping insertion in model container [2025-01-10 06:56:40,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:40" (2/3) ... [2025-01-10 06:56:40,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9f19ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:56:40, skipping insertion in model container [2025-01-10 06:56:40,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:56:40" (3/3) ... [2025-01-10 06:56:40,729 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2025-01-10 06:56:40,741 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:56:40,743 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy11.wvr.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-01-10 06:56:40,743 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:56:40,784 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 06:56:40,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2025-01-10 06:56:40,840 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-01-10 06:56:40,842 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 06:56:40,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 77 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-01-10 06:56:40,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2025-01-10 06:56:40,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2025-01-10 06:56:40,852 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:56:40,862 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;@1c91756a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:56:40,863 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-01-10 06:56:40,868 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:56:40,868 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2025-01-10 06:56:40,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:56:40,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:40,868 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 06:56:40,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:40,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash 227963738, now seen corresponding path program 1 times [2025-01-10 06:56:40,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:40,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026494871] [2025-01-10 06:56:40,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:40,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:40,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 06:56:40,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 06:56:40,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:40,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:41,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:41,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026494871] [2025-01-10 06:56:41,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026494871] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:41,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:41,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:56:41,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313413411] [2025-01-10 06:56:41,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:41,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:56:41,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:41,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:56:41,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:56:41,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:56:41,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:41,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:41,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:56:41,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:41,203 INFO L124 PetriNetUnfolderBase]: 173/330 cut-off events. [2025-01-10 06:56:41,203 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-01-10 06:56:41,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 330 events. 173/330 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1461 event pairs, 42 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 609. Up to 151 conditions per place. [2025-01-10 06:56:41,207 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 38 selfloop transitions, 5 changer transitions 2/52 dead transitions. [2025-01-10 06:56:41,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 209 flow [2025-01-10 06:56:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:56:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:56:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-01-10 06:56:41,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.640625 [2025-01-10 06:56:41,220 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 4 states and 82 transitions. [2025-01-10 06:56:41,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 209 flow [2025-01-10 06:56:41,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 202 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:56:41,225 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 84 flow [2025-01-10 06:56:41,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2025-01-10 06:56:41,233 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-01-10 06:56:41,233 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 84 flow [2025-01-10 06:56:41,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:41,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:41,233 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 06:56:41,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:56:41,234 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:41,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:41,234 INFO L85 PathProgramCache]: Analyzing trace with hash 227963739, now seen corresponding path program 1 times [2025-01-10 06:56:41,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:41,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037572373] [2025-01-10 06:56:41,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:41,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:41,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 06:56:41,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 06:56:41,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:41,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:41,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:41,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037572373] [2025-01-10 06:56:41,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037572373] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:41,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:41,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:56:41,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970335434] [2025-01-10 06:56:41,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:41,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:56:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:41,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:56:41,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:56:41,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2025-01-10 06:56:41,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:41,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:41,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2025-01-10 06:56:41,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:41,483 INFO L124 PetriNetUnfolderBase]: 173/349 cut-off events. [2025-01-10 06:56:41,483 INFO L125 PetriNetUnfolderBase]: For 39/48 co-relation queries the response was YES. [2025-01-10 06:56:41,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 349 events. 173/349 cut-off events. For 39/48 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1647 event pairs, 34 based on Foata normal form. 21/339 useless extension candidates. Maximal degree in co-relation 514. Up to 139 conditions per place. [2025-01-10 06:56:41,488 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2025-01-10 06:56:41,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 235 flow [2025-01-10 06:56:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:56:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:56:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2025-01-10 06:56:41,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65625 [2025-01-10 06:56:41,491 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 84 flow. Second operand 4 states and 84 transitions. [2025-01-10 06:56:41,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 235 flow [2025-01-10 06:56:41,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:41,492 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 139 flow [2025-01-10 06:56:41,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2025-01-10 06:56:41,494 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2025-01-10 06:56:41,494 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 139 flow [2025-01-10 06:56:41,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:41,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:41,495 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 06:56:41,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 06:56:41,495 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:41,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:41,496 INFO L85 PathProgramCache]: Analyzing trace with hash 227963772, now seen corresponding path program 1 times [2025-01-10 06:56:41,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:41,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349050657] [2025-01-10 06:56:41,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:41,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:41,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 06:56:41,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 06:56:41,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:41,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:41,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:41,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349050657] [2025-01-10 06:56:41,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349050657] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:41,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:41,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:56:41,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996986739] [2025-01-10 06:56:41,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:41,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:41,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:41,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:41,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:41,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:56:41,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:41,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:41,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:56:41,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:41,664 INFO L124 PetriNetUnfolderBase]: 232/410 cut-off events. [2025-01-10 06:56:41,664 INFO L125 PetriNetUnfolderBase]: For 210/214 co-relation queries the response was YES. [2025-01-10 06:56:41,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 410 events. 232/410 cut-off events. For 210/214 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1854 event pairs, 36 based on Foata normal form. 20/407 useless extension candidates. Maximal degree in co-relation 958. Up to 271 conditions per place. [2025-01-10 06:56:41,667 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 43 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2025-01-10 06:56:41,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 291 flow [2025-01-10 06:56:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:56:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:56:41,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2025-01-10 06:56:41,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4875 [2025-01-10 06:56:41,668 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 139 flow. Second operand 5 states and 78 transitions. [2025-01-10 06:56:41,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 291 flow [2025-01-10 06:56:41,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:41,670 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 144 flow [2025-01-10 06:56:41,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2025-01-10 06:56:41,671 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2025-01-10 06:56:41,671 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 144 flow [2025-01-10 06:56:41,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:41,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:41,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 06:56:41,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:56:41,671 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:41,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1523057407, now seen corresponding path program 1 times [2025-01-10 06:56:41,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:41,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893821127] [2025-01-10 06:56:41,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:41,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:41,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:56:41,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:56:41,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:41,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:41,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:41,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893821127] [2025-01-10 06:56:41,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893821127] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:41,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:41,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:56:41,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539844181] [2025-01-10 06:56:41,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:41,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:56:41,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:41,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:56:41,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:56:41,698 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:41,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:41,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:41,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:41,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:41,767 INFO L124 PetriNetUnfolderBase]: 173/344 cut-off events. [2025-01-10 06:56:41,768 INFO L125 PetriNetUnfolderBase]: For 376/396 co-relation queries the response was YES. [2025-01-10 06:56:41,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 344 events. 173/344 cut-off events. For 376/396 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1590 event pairs, 97 based on Foata normal form. 36/352 useless extension candidates. Maximal degree in co-relation 558. Up to 235 conditions per place. [2025-01-10 06:56:41,770 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 33 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2025-01-10 06:56:41,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 242 flow [2025-01-10 06:56:41,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:56:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:56:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2025-01-10 06:56:41,771 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-01-10 06:56:41,771 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 144 flow. Second operand 3 states and 55 transitions. [2025-01-10 06:56:41,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 242 flow [2025-01-10 06:56:41,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 06:56:41,773 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 136 flow [2025-01-10 06:56:41,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2025-01-10 06:56:41,774 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2025-01-10 06:56:41,774 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 136 flow [2025-01-10 06:56:41,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:41,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:41,774 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:41,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:56:41,774 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:41,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:41,775 INFO L85 PathProgramCache]: Analyzing trace with hash 12079576, now seen corresponding path program 1 times [2025-01-10 06:56:41,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:41,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113949748] [2025-01-10 06:56:41,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:41,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:41,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:56:41,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:56:41,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:41,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:41,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:41,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113949748] [2025-01-10 06:56:41,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113949748] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:41,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:41,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:56:41,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292855415] [2025-01-10 06:56:41,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:41,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:56:41,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:41,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:56:41,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:56:41,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:56:41,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:41,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:41,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:56:41,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:41,901 INFO L124 PetriNetUnfolderBase]: 178/332 cut-off events. [2025-01-10 06:56:41,901 INFO L125 PetriNetUnfolderBase]: For 321/341 co-relation queries the response was YES. [2025-01-10 06:56:41,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 332 events. 178/332 cut-off events. For 321/341 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1373 event pairs, 51 based on Foata normal form. 20/320 useless extension candidates. Maximal degree in co-relation 497. Up to 149 conditions per place. [2025-01-10 06:56:41,903 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 36 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2025-01-10 06:56:41,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 302 flow [2025-01-10 06:56:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:56:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:56:41,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-01-10 06:56:41,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-01-10 06:56:41,904 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 136 flow. Second operand 4 states and 76 transitions. [2025-01-10 06:56:41,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 302 flow [2025-01-10 06:56:41,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:56:41,906 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 177 flow [2025-01-10 06:56:41,907 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2025-01-10 06:56:41,907 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2025-01-10 06:56:41,907 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 177 flow [2025-01-10 06:56:41,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:41,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:41,907 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:41,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:56:41,907 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:41,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:41,908 INFO L85 PathProgramCache]: Analyzing trace with hash 12079577, now seen corresponding path program 1 times [2025-01-10 06:56:41,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:41,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136195532] [2025-01-10 06:56:41,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:41,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:41,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:56:41,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:56:41,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:41,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:41,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:41,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136195532] [2025-01-10 06:56:41,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136195532] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:41,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:41,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:56:41,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651645828] [2025-01-10 06:56:41,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:41,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:56:41,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:41,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:56:41,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:56:41,976 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2025-01-10 06:56:41,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:41,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:41,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2025-01-10 06:56:41,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:42,060 INFO L124 PetriNetUnfolderBase]: 195/380 cut-off events. [2025-01-10 06:56:42,060 INFO L125 PetriNetUnfolderBase]: For 431/451 co-relation queries the response was YES. [2025-01-10 06:56:42,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 380 events. 195/380 cut-off events. For 431/451 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1662 event pairs, 54 based on Foata normal form. 30/394 useless extension candidates. Maximal degree in co-relation 615. Up to 161 conditions per place. [2025-01-10 06:56:42,063 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 20 changer transitions 0/61 dead transitions. [2025-01-10 06:56:42,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 61 transitions, 409 flow [2025-01-10 06:56:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:56:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:56:42,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2025-01-10 06:56:42,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-01-10 06:56:42,066 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 177 flow. Second operand 4 states and 80 transitions. [2025-01-10 06:56:42,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 61 transitions, 409 flow [2025-01-10 06:56:42,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 61 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:42,069 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 309 flow [2025-01-10 06:56:42,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=309, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2025-01-10 06:56:42,070 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2025-01-10 06:56:42,071 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 309 flow [2025-01-10 06:56:42,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:42,071 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:42,071 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:42,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:56:42,071 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:42,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash 12079610, now seen corresponding path program 1 times [2025-01-10 06:56:42,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:42,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745604035] [2025-01-10 06:56:42,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:42,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:42,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:56:42,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:56:42,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:42,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:42,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:42,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745604035] [2025-01-10 06:56:42,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745604035] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:42,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:42,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:56:42,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935458874] [2025-01-10 06:56:42,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:42,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:42,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:42,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:42,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:42,110 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:56:42,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:42,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:42,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:56:42,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:42,203 INFO L124 PetriNetUnfolderBase]: 254/428 cut-off events. [2025-01-10 06:56:42,203 INFO L125 PetriNetUnfolderBase]: For 653/685 co-relation queries the response was YES. [2025-01-10 06:56:42,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 428 events. 254/428 cut-off events. For 653/685 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1664 event pairs, 22 based on Foata normal form. 47/473 useless extension candidates. Maximal degree in co-relation 830. Up to 262 conditions per place. [2025-01-10 06:56:42,205 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 56 selfloop transitions, 7 changer transitions 0/67 dead transitions. [2025-01-10 06:56:42,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 67 transitions, 543 flow [2025-01-10 06:56:42,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:56:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:56:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2025-01-10 06:56:42,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2025-01-10 06:56:42,206 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 309 flow. Second operand 5 states and 74 transitions. [2025-01-10 06:56:42,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 67 transitions, 543 flow [2025-01-10 06:56:42,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:42,208 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 304 flow [2025-01-10 06:56:42,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2025-01-10 06:56:42,209 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2025-01-10 06:56:42,209 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 304 flow [2025-01-10 06:56:42,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:42,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:42,209 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:42,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 06:56:42,209 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:42,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:42,210 INFO L85 PathProgramCache]: Analyzing trace with hash 925687621, now seen corresponding path program 1 times [2025-01-10 06:56:42,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:42,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205598134] [2025-01-10 06:56:42,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:42,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:42,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:56:42,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:56:42,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:42,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:42,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:42,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205598134] [2025-01-10 06:56:42,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205598134] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:42,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:42,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:56:42,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204155539] [2025-01-10 06:56:42,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:42,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:42,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:42,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:42,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:42,278 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:42,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:42,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:42,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:42,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:42,375 INFO L124 PetriNetUnfolderBase]: 174/329 cut-off events. [2025-01-10 06:56:42,375 INFO L125 PetriNetUnfolderBase]: For 695/717 co-relation queries the response was YES. [2025-01-10 06:56:42,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 329 events. 174/329 cut-off events. For 695/717 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1336 event pairs, 35 based on Foata normal form. 34/362 useless extension candidates. Maximal degree in co-relation 867. Up to 157 conditions per place. [2025-01-10 06:56:42,378 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 42 selfloop transitions, 24 changer transitions 0/73 dead transitions. [2025-01-10 06:56:42,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 73 transitions, 582 flow [2025-01-10 06:56:42,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:56:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:56:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2025-01-10 06:56:42,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55625 [2025-01-10 06:56:42,379 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 304 flow. Second operand 5 states and 89 transitions. [2025-01-10 06:56:42,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 73 transitions, 582 flow [2025-01-10 06:56:42,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 550 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 06:56:42,382 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 408 flow [2025-01-10 06:56:42,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2025-01-10 06:56:42,383 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2025-01-10 06:56:42,383 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 408 flow [2025-01-10 06:56:42,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:42,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:42,383 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:42,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-10 06:56:42,384 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:42,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:42,384 INFO L85 PathProgramCache]: Analyzing trace with hash 374468174, now seen corresponding path program 1 times [2025-01-10 06:56:42,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:42,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031797271] [2025-01-10 06:56:42,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:42,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:42,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:56:42,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:56:42,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:42,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:42,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:42,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:42,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031797271] [2025-01-10 06:56:42,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031797271] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:42,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:42,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:56:42,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100309320] [2025-01-10 06:56:42,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:42,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:56:42,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:42,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:56:42,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:56:42,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:42,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:42,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:42,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:42,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:42,455 INFO L124 PetriNetUnfolderBase]: 174/314 cut-off events. [2025-01-10 06:56:42,456 INFO L125 PetriNetUnfolderBase]: For 1020/1040 co-relation queries the response was YES. [2025-01-10 06:56:42,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 314 events. 174/314 cut-off events. For 1020/1040 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1213 event pairs, 76 based on Foata normal form. 33/345 useless extension candidates. Maximal degree in co-relation 823. Up to 233 conditions per place. [2025-01-10 06:56:42,458 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 50 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2025-01-10 06:56:42,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 578 flow [2025-01-10 06:56:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:56:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:56:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-01-10 06:56:42,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-01-10 06:56:42,459 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 408 flow. Second operand 3 states and 52 transitions. [2025-01-10 06:56:42,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 578 flow [2025-01-10 06:56:42,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:42,461 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 393 flow [2025-01-10 06:56:42,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2025-01-10 06:56:42,462 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2025-01-10 06:56:42,462 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 393 flow [2025-01-10 06:56:42,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:42,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:42,462 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:42,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-10 06:56:42,462 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:42,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:42,463 INFO L85 PathProgramCache]: Analyzing trace with hash -444165190, now seen corresponding path program 1 times [2025-01-10 06:56:42,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:42,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64634628] [2025-01-10 06:56:42,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:42,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:42,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:42,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:42,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:42,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:42,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:42,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64634628] [2025-01-10 06:56:42,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64634628] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:42,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:42,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:42,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689736510] [2025-01-10 06:56:42,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:42,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:56:42,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:42,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:56:42,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:42,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:56:42,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 393 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:42,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:42,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:56:42,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:42,704 INFO L124 PetriNetUnfolderBase]: 256/477 cut-off events. [2025-01-10 06:56:42,704 INFO L125 PetriNetUnfolderBase]: For 1123/1133 co-relation queries the response was YES. [2025-01-10 06:56:42,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1711 conditions, 477 events. 256/477 cut-off events. For 1123/1133 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2093 event pairs, 30 based on Foata normal form. 15/492 useless extension candidates. Maximal degree in co-relation 1033. Up to 140 conditions per place. [2025-01-10 06:56:42,707 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 51 selfloop transitions, 37 changer transitions 0/92 dead transitions. [2025-01-10 06:56:42,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 92 transitions, 747 flow [2025-01-10 06:56:42,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 06:56:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 06:56:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2025-01-10 06:56:42,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2025-01-10 06:56:42,708 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 393 flow. Second operand 9 states and 158 transitions. [2025-01-10 06:56:42,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 92 transitions, 747 flow [2025-01-10 06:56:42,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 723 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:56:42,711 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 535 flow [2025-01-10 06:56:42,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=535, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2025-01-10 06:56:42,713 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2025-01-10 06:56:42,713 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 535 flow [2025-01-10 06:56:42,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:42,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:42,713 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:42,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-10 06:56:42,713 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:42,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:42,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1239549803, now seen corresponding path program 1 times [2025-01-10 06:56:42,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:42,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486391050] [2025-01-10 06:56:42,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:42,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:42,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:42,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:42,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:42,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:42,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:42,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486391050] [2025-01-10 06:56:42,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486391050] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:42,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:42,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:42,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281236603] [2025-01-10 06:56:42,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:42,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:56:42,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:42,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:56:42,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:42,779 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:42,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:42,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:42,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:42,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:42,956 INFO L124 PetriNetUnfolderBase]: 329/568 cut-off events. [2025-01-10 06:56:42,956 INFO L125 PetriNetUnfolderBase]: For 1989/1989 co-relation queries the response was YES. [2025-01-10 06:56:42,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2290 conditions, 568 events. 329/568 cut-off events. For 1989/1989 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2410 event pairs, 62 based on Foata normal form. 10/577 useless extension candidates. Maximal degree in co-relation 1796. Up to 256 conditions per place. [2025-01-10 06:56:42,959 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 61 selfloop transitions, 38 changer transitions 0/101 dead transitions. [2025-01-10 06:56:42,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 1034 flow [2025-01-10 06:56:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:56:42,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:56:42,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2025-01-10 06:56:42,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48046875 [2025-01-10 06:56:42,960 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 535 flow. Second operand 8 states and 123 transitions. [2025-01-10 06:56:42,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 1034 flow [2025-01-10 06:56:42,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 894 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-01-10 06:56:42,966 INFO L231 Difference]: Finished difference. Result has 61 places, 77 transitions, 698 flow [2025-01-10 06:56:42,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=61, PETRI_TRANSITIONS=77} [2025-01-10 06:56:42,966 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2025-01-10 06:56:42,966 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 77 transitions, 698 flow [2025-01-10 06:56:42,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:42,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:42,966 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:42,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-10 06:56:42,967 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:42,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:42,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1227322143, now seen corresponding path program 2 times [2025-01-10 06:56:42,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:42,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904167872] [2025-01-10 06:56:42,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:42,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:42,973 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:42,975 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:42,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:56:42,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:43,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:43,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904167872] [2025-01-10 06:56:43,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904167872] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:43,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:43,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786161675] [2025-01-10 06:56:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:43,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:56:43,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:43,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:56:43,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:43,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:43,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 77 transitions, 698 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:43,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:43,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:43,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:43,164 INFO L124 PetriNetUnfolderBase]: 341/608 cut-off events. [2025-01-10 06:56:43,164 INFO L125 PetriNetUnfolderBase]: For 1701/1701 co-relation queries the response was YES. [2025-01-10 06:56:43,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 608 events. 341/608 cut-off events. For 1701/1701 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2618 event pairs, 74 based on Foata normal form. 10/617 useless extension candidates. Maximal degree in co-relation 2077. Up to 200 conditions per place. [2025-01-10 06:56:43,168 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 59 selfloop transitions, 42 changer transitions 0/103 dead transitions. [2025-01-10 06:56:43,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 1060 flow [2025-01-10 06:56:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:56:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:56:43,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2025-01-10 06:56:43,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2025-01-10 06:56:43,169 INFO L175 Difference]: Start difference. First operand has 61 places, 77 transitions, 698 flow. Second operand 8 states and 121 transitions. [2025-01-10 06:56:43,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 1060 flow [2025-01-10 06:56:43,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 1011 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-01-10 06:56:43,178 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 846 flow [2025-01-10 06:56:43,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=846, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2025-01-10 06:56:43,178 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2025-01-10 06:56:43,179 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 846 flow [2025-01-10 06:56:43,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:43,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:43,179 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:43,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-10 06:56:43,179 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:43,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1236583083, now seen corresponding path program 3 times [2025-01-10 06:56:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:43,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553760289] [2025-01-10 06:56:43,179 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:56:43,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:43,185 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:43,189 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:43,190 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 06:56:43,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:43,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:43,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553760289] [2025-01-10 06:56:43,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553760289] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:43,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:43,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:43,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16542592] [2025-01-10 06:56:43,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:43,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:56:43,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:43,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:56:43,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:43,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:43,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 846 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:43,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:43,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:43,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:43,364 INFO L124 PetriNetUnfolderBase]: 326/579 cut-off events. [2025-01-10 06:56:43,364 INFO L125 PetriNetUnfolderBase]: For 1954/1954 co-relation queries the response was YES. [2025-01-10 06:56:43,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 579 events. 326/579 cut-off events. For 1954/1954 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2476 event pairs, 53 based on Foata normal form. 15/593 useless extension candidates. Maximal degree in co-relation 2280. Up to 148 conditions per place. [2025-01-10 06:56:43,368 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 58 selfloop transitions, 42 changer transitions 0/102 dead transitions. [2025-01-10 06:56:43,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 102 transitions, 1128 flow [2025-01-10 06:56:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:56:43,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:56:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2025-01-10 06:56:43,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2025-01-10 06:56:43,369 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 846 flow. Second operand 8 states and 119 transitions. [2025-01-10 06:56:43,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 102 transitions, 1128 flow [2025-01-10 06:56:43,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 102 transitions, 1030 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-01-10 06:56:43,377 INFO L231 Difference]: Finished difference. Result has 69 places, 78 transitions, 810 flow [2025-01-10 06:56:43,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=810, PETRI_PLACES=69, PETRI_TRANSITIONS=78} [2025-01-10 06:56:43,378 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2025-01-10 06:56:43,378 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 78 transitions, 810 flow [2025-01-10 06:56:43,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:43,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:43,379 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:43,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-10 06:56:43,379 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:43,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:43,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1227639272, now seen corresponding path program 2 times [2025-01-10 06:56:43,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:43,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337649402] [2025-01-10 06:56:43,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:43,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:43,384 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:43,386 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:43,387 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:56:43,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:43,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:43,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337649402] [2025-01-10 06:56:43,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337649402] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:43,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:43,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:43,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109311763] [2025-01-10 06:56:43,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:43,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:56:43,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:43,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:56:43,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:43,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:56:43,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 78 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:43,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:43,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:56:43,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:43,623 INFO L124 PetriNetUnfolderBase]: 328/617 cut-off events. [2025-01-10 06:56:43,623 INFO L125 PetriNetUnfolderBase]: For 2191/2205 co-relation queries the response was YES. [2025-01-10 06:56:43,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2852 conditions, 617 events. 328/617 cut-off events. For 2191/2205 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2957 event pairs, 36 based on Foata normal form. 25/638 useless extension candidates. Maximal degree in co-relation 2608. Up to 300 conditions per place. [2025-01-10 06:56:43,628 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 58 selfloop transitions, 53 changer transitions 2/118 dead transitions. [2025-01-10 06:56:43,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 118 transitions, 1364 flow [2025-01-10 06:56:43,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:56:43,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:56:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2025-01-10 06:56:43,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2025-01-10 06:56:43,629 INFO L175 Difference]: Start difference. First operand has 69 places, 78 transitions, 810 flow. Second operand 8 states and 142 transitions. [2025-01-10 06:56:43,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 118 transitions, 1364 flow [2025-01-10 06:56:43,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 118 transitions, 1257 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-01-10 06:56:43,635 INFO L231 Difference]: Finished difference. Result has 71 places, 86 transitions, 944 flow [2025-01-10 06:56:43,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=944, PETRI_PLACES=71, PETRI_TRANSITIONS=86} [2025-01-10 06:56:43,636 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2025-01-10 06:56:43,636 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 86 transitions, 944 flow [2025-01-10 06:56:43,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:43,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:43,636 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:43,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-10 06:56:43,636 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:43,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:43,637 INFO L85 PathProgramCache]: Analyzing trace with hash -925850572, now seen corresponding path program 3 times [2025-01-10 06:56:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701964320] [2025-01-10 06:56:43,637 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:56:43,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:43,640 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:43,642 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:43,643 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 06:56:43,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:43,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:43,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:43,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701964320] [2025-01-10 06:56:43,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701964320] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:43,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:43,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:43,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676396037] [2025-01-10 06:56:43,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:43,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:56:43,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:43,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:56:43,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:43,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:43,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 86 transitions, 944 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:43,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:43,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:43,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:43,845 INFO L124 PetriNetUnfolderBase]: 413/760 cut-off events. [2025-01-10 06:56:43,845 INFO L125 PetriNetUnfolderBase]: For 2736/2740 co-relation queries the response was YES. [2025-01-10 06:56:43,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3408 conditions, 760 events. 413/760 cut-off events. For 2736/2740 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3660 event pairs, 91 based on Foata normal form. 19/778 useless extension candidates. Maximal degree in co-relation 3086. Up to 360 conditions per place. [2025-01-10 06:56:43,850 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 49 changer transitions 3/113 dead transitions. [2025-01-10 06:56:43,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 1343 flow [2025-01-10 06:56:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:43,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2025-01-10 06:56:43,851 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2025-01-10 06:56:43,851 INFO L175 Difference]: Start difference. First operand has 71 places, 86 transitions, 944 flow. Second operand 6 states and 106 transitions. [2025-01-10 06:56:43,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 1343 flow [2025-01-10 06:56:43,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 113 transitions, 1223 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-01-10 06:56:43,859 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 969 flow [2025-01-10 06:56:43,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=969, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2025-01-10 06:56:43,860 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 40 predicate places. [2025-01-10 06:56:43,860 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 969 flow [2025-01-10 06:56:43,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:43,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:43,860 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:43,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-10 06:56:43,860 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:43,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:43,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1236576243, now seen corresponding path program 1 times [2025-01-10 06:56:43,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:43,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866719744] [2025-01-10 06:56:43,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:43,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:43,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:43,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:43,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:43,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:43,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:43,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866719744] [2025-01-10 06:56:43,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866719744] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:43,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:43,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:43,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011334900] [2025-01-10 06:56:43,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:43,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:56:43,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:43,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:56:43,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:43,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:43,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 969 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:43,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:43,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:43,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:44,039 INFO L124 PetriNetUnfolderBase]: 415/754 cut-off events. [2025-01-10 06:56:44,039 INFO L125 PetriNetUnfolderBase]: For 2544/2552 co-relation queries the response was YES. [2025-01-10 06:56:44,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 754 events. 415/754 cut-off events. For 2544/2552 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3615 event pairs, 111 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 3083. Up to 328 conditions per place. [2025-01-10 06:56:44,044 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 46 changer transitions 0/111 dead transitions. [2025-01-10 06:56:44,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 1320 flow [2025-01-10 06:56:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:44,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2025-01-10 06:56:44,045 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2025-01-10 06:56:44,045 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 969 flow. Second operand 6 states and 98 transitions. [2025-01-10 06:56:44,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 1320 flow [2025-01-10 06:56:44,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 1233 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-01-10 06:56:44,054 INFO L231 Difference]: Finished difference. Result has 78 places, 92 transitions, 1066 flow [2025-01-10 06:56:44,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1066, PETRI_PLACES=78, PETRI_TRANSITIONS=92} [2025-01-10 06:56:44,054 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2025-01-10 06:56:44,054 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 92 transitions, 1066 flow [2025-01-10 06:56:44,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:44,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:44,054 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:44,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-10 06:56:44,054 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:44,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:44,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1227307862, now seen corresponding path program 1 times [2025-01-10 06:56:44,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:44,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734598518] [2025-01-10 06:56:44,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:44,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:44,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:44,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:44,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:44,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:44,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:44,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734598518] [2025-01-10 06:56:44,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734598518] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:44,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:44,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:44,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761050249] [2025-01-10 06:56:44,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:44,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:56:44,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:44,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:56:44,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:44,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:44,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 92 transitions, 1066 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:44,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:44,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:44,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:44,275 INFO L124 PetriNetUnfolderBase]: 431/795 cut-off events. [2025-01-10 06:56:44,276 INFO L125 PetriNetUnfolderBase]: For 3106/3114 co-relation queries the response was YES. [2025-01-10 06:56:44,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3516 conditions, 795 events. 431/795 cut-off events. For 3106/3114 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3915 event pairs, 80 based on Foata normal form. 16/811 useless extension candidates. Maximal degree in co-relation 3226. Up to 389 conditions per place. [2025-01-10 06:56:44,280 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 51 changer transitions 2/121 dead transitions. [2025-01-10 06:56:44,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 121 transitions, 1484 flow [2025-01-10 06:56:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:44,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2025-01-10 06:56:44,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2025-01-10 06:56:44,281 INFO L175 Difference]: Start difference. First operand has 78 places, 92 transitions, 1066 flow. Second operand 6 states and 109 transitions. [2025-01-10 06:56:44,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 121 transitions, 1484 flow [2025-01-10 06:56:44,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 1462 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:44,290 INFO L231 Difference]: Finished difference. Result has 84 places, 93 transitions, 1195 flow [2025-01-10 06:56:44,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1195, PETRI_PLACES=84, PETRI_TRANSITIONS=93} [2025-01-10 06:56:44,291 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2025-01-10 06:56:44,291 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 93 transitions, 1195 flow [2025-01-10 06:56:44,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:44,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:44,291 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:44,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-01-10 06:56:44,291 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:44,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:44,292 INFO L85 PathProgramCache]: Analyzing trace with hash -914794403, now seen corresponding path program 2 times [2025-01-10 06:56:44,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:44,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164487141] [2025-01-10 06:56:44,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:44,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:44,294 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:44,296 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:44,296 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:56:44,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:44,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:44,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164487141] [2025-01-10 06:56:44,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164487141] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:44,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:44,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:44,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292873668] [2025-01-10 06:56:44,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:44,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:56:44,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:44,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:56:44,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:44,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:44,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 93 transitions, 1195 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:44,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:44,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:44,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:44,439 INFO L124 PetriNetUnfolderBase]: 433/797 cut-off events. [2025-01-10 06:56:44,439 INFO L125 PetriNetUnfolderBase]: For 4447/4447 co-relation queries the response was YES. [2025-01-10 06:56:44,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3717 conditions, 797 events. 433/797 cut-off events. For 4447/4447 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3896 event pairs, 101 based on Foata normal form. 8/804 useless extension candidates. Maximal degree in co-relation 3425. Up to 303 conditions per place. [2025-01-10 06:56:44,444 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 65 selfloop transitions, 44 changer transitions 0/111 dead transitions. [2025-01-10 06:56:44,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 111 transitions, 1540 flow [2025-01-10 06:56:44,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2025-01-10 06:56:44,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2025-01-10 06:56:44,445 INFO L175 Difference]: Start difference. First operand has 84 places, 93 transitions, 1195 flow. Second operand 6 states and 92 transitions. [2025-01-10 06:56:44,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 111 transitions, 1540 flow [2025-01-10 06:56:44,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 111 transitions, 1457 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-01-10 06:56:44,456 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 1258 flow [2025-01-10 06:56:44,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1258, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2025-01-10 06:56:44,457 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 55 predicate places. [2025-01-10 06:56:44,457 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 1258 flow [2025-01-10 06:56:44,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:44,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:44,457 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:44,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-10 06:56:44,457 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:44,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:44,458 INFO L85 PathProgramCache]: Analyzing trace with hash -925533112, now seen corresponding path program 2 times [2025-01-10 06:56:44,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:44,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68026025] [2025-01-10 06:56:44,458 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:44,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:44,460 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:44,462 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:44,462 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:56:44,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:44,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:44,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68026025] [2025-01-10 06:56:44,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68026025] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:44,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:44,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:44,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907670342] [2025-01-10 06:56:44,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:44,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:56:44,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:44,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:56:44,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:44,511 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:56:44,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 1258 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:44,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:44,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:56:44,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:44,675 INFO L124 PetriNetUnfolderBase]: 393/761 cut-off events. [2025-01-10 06:56:44,675 INFO L125 PetriNetUnfolderBase]: For 4653/4690 co-relation queries the response was YES. [2025-01-10 06:56:44,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3608 conditions, 761 events. 393/761 cut-off events. For 4653/4690 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3954 event pairs, 54 based on Foata normal form. 37/795 useless extension candidates. Maximal degree in co-relation 3386. Up to 407 conditions per place. [2025-01-10 06:56:44,680 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 58 selfloop transitions, 57 changer transitions 3/124 dead transitions. [2025-01-10 06:56:44,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 124 transitions, 1681 flow [2025-01-10 06:56:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:56:44,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:56:44,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2025-01-10 06:56:44,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2025-01-10 06:56:44,682 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 1258 flow. Second operand 8 states and 142 transitions. [2025-01-10 06:56:44,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 124 transitions, 1681 flow [2025-01-10 06:56:44,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 124 transitions, 1580 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-01-10 06:56:44,694 INFO L231 Difference]: Finished difference. Result has 93 places, 95 transitions, 1327 flow [2025-01-10 06:56:44,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1327, PETRI_PLACES=93, PETRI_TRANSITIONS=95} [2025-01-10 06:56:44,694 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 60 predicate places. [2025-01-10 06:56:44,694 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 95 transitions, 1327 flow [2025-01-10 06:56:44,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:44,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:44,695 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:44,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-01-10 06:56:44,695 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:44,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash -914808353, now seen corresponding path program 3 times [2025-01-10 06:56:44,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:44,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934236250] [2025-01-10 06:56:44,695 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:56:44,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:44,698 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:44,701 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:44,701 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 06:56:44,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:44,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:44,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934236250] [2025-01-10 06:56:44,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934236250] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:44,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:44,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:44,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616198485] [2025-01-10 06:56:44,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:44,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:56:44,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:44,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:56:44,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:44,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:44,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 95 transitions, 1327 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:44,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:44,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:44,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:44,837 INFO L124 PetriNetUnfolderBase]: 435/811 cut-off events. [2025-01-10 06:56:44,837 INFO L125 PetriNetUnfolderBase]: For 5756/5760 co-relation queries the response was YES. [2025-01-10 06:56:44,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 811 events. 435/811 cut-off events. For 5756/5760 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4067 event pairs, 109 based on Foata normal form. 12/822 useless extension candidates. Maximal degree in co-relation 3612. Up to 415 conditions per place. [2025-01-10 06:56:44,842 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 63 selfloop transitions, 42 changer transitions 2/109 dead transitions. [2025-01-10 06:56:44,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 109 transitions, 1614 flow [2025-01-10 06:56:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2025-01-10 06:56:44,843 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2025-01-10 06:56:44,843 INFO L175 Difference]: Start difference. First operand has 93 places, 95 transitions, 1327 flow. Second operand 6 states and 94 transitions. [2025-01-10 06:56:44,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 109 transitions, 1614 flow [2025-01-10 06:56:44,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 1322 flow, removed 5 selfloop flow, removed 12 redundant places. [2025-01-10 06:56:44,857 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 1055 flow [2025-01-10 06:56:44,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1055, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2025-01-10 06:56:44,857 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2025-01-10 06:56:44,857 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 1055 flow [2025-01-10 06:56:44,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:44,857 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:44,857 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:44,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-01-10 06:56:44,857 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:44,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:44,858 INFO L85 PathProgramCache]: Analyzing trace with hash -913329486, now seen corresponding path program 1 times [2025-01-10 06:56:44,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:44,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638901060] [2025-01-10 06:56:44,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:44,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:44,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:44,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:44,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:44,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:44,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:44,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638901060] [2025-01-10 06:56:44,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638901060] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:44,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:44,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:56:44,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457259480] [2025-01-10 06:56:44,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:44,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:44,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:44,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:44,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:44,908 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:44,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 1055 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:44,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:44,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:44,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:44,977 INFO L124 PetriNetUnfolderBase]: 284/572 cut-off events. [2025-01-10 06:56:44,977 INFO L125 PetriNetUnfolderBase]: For 3189/3209 co-relation queries the response was YES. [2025-01-10 06:56:44,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2579 conditions, 572 events. 284/572 cut-off events. For 3189/3209 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2951 event pairs, 42 based on Foata normal form. 16/582 useless extension candidates. Maximal degree in co-relation 2363. Up to 345 conditions per place. [2025-01-10 06:56:44,980 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 51 selfloop transitions, 42 changer transitions 0/101 dead transitions. [2025-01-10 06:56:44,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 101 transitions, 1308 flow [2025-01-10 06:56:44,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:56:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:56:44,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2025-01-10 06:56:44,983 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-01-10 06:56:44,983 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 1055 flow. Second operand 5 states and 80 transitions. [2025-01-10 06:56:44,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 101 transitions, 1308 flow [2025-01-10 06:56:44,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 1205 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-01-10 06:56:44,989 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 1032 flow [2025-01-10 06:56:44,989 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1032, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2025-01-10 06:56:44,989 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 46 predicate places. [2025-01-10 06:56:44,989 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 1032 flow [2025-01-10 06:56:44,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:44,989 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:44,989 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:44,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-10 06:56:44,989 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:44,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:44,990 INFO L85 PathProgramCache]: Analyzing trace with hash -914333122, now seen corresponding path program 3 times [2025-01-10 06:56:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:44,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606546899] [2025-01-10 06:56:44,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:56:44,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:44,992 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:44,994 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:44,994 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 06:56:44,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:45,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:45,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606546899] [2025-01-10 06:56:45,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606546899] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:45,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:45,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:45,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352825728] [2025-01-10 06:56:45,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:45,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:56:45,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:45,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:56:45,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:45,041 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-01-10 06:56:45,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 1032 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:45,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:45,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-01-10 06:56:45,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:45,165 INFO L124 PetriNetUnfolderBase]: 379/740 cut-off events. [2025-01-10 06:56:45,165 INFO L125 PetriNetUnfolderBase]: For 2962/2980 co-relation queries the response was YES. [2025-01-10 06:56:45,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3269 conditions, 740 events. 379/740 cut-off events. For 2962/2980 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3961 event pairs, 51 based on Foata normal form. 10/747 useless extension candidates. Maximal degree in co-relation 2939. Up to 345 conditions per place. [2025-01-10 06:56:45,172 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 55 selfloop transitions, 53 changer transitions 1/114 dead transitions. [2025-01-10 06:56:45,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 114 transitions, 1409 flow [2025-01-10 06:56:45,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:56:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:56:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2025-01-10 06:56:45,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2025-01-10 06:56:45,174 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 1032 flow. Second operand 8 states and 136 transitions. [2025-01-10 06:56:45,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 114 transitions, 1409 flow [2025-01-10 06:56:45,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 114 transitions, 1374 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:45,181 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 1134 flow [2025-01-10 06:56:45,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1134, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2025-01-10 06:56:45,182 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 54 predicate places. [2025-01-10 06:56:45,182 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 1134 flow [2025-01-10 06:56:45,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:45,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:45,182 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:45,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-01-10 06:56:45,182 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:45,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1014041798, now seen corresponding path program 1 times [2025-01-10 06:56:45,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:45,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786923970] [2025-01-10 06:56:45,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:45,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:45,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:56:45,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:45,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:45,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:45,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:45,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786923970] [2025-01-10 06:56:45,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786923970] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:45,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470350105] [2025-01-10 06:56:45,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:45,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:45,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:45,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:45,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 06:56:45,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:56:45,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:45,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:45,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:45,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:56:45,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:45,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:45,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470350105] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:45,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:56:45,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2025-01-10 06:56:45,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209501040] [2025-01-10 06:56:45,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:45,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:45,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:45,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:45,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:45,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:45,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 1134 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:45,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:45,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:45,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:45,450 INFO L124 PetriNetUnfolderBase]: 480/913 cut-off events. [2025-01-10 06:56:45,450 INFO L125 PetriNetUnfolderBase]: For 3993/3993 co-relation queries the response was YES. [2025-01-10 06:56:45,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4069 conditions, 913 events. 480/913 cut-off events. For 3993/3993 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4835 event pairs, 50 based on Foata normal form. 13/926 useless extension candidates. Maximal degree in co-relation 3850. Up to 346 conditions per place. [2025-01-10 06:56:45,457 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 107 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2025-01-10 06:56:45,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 142 transitions, 1800 flow [2025-01-10 06:56:45,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:56:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:56:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2025-01-10 06:56:45,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2025-01-10 06:56:45,459 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 1134 flow. Second operand 7 states and 118 transitions. [2025-01-10 06:56:45,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 142 transitions, 1800 flow [2025-01-10 06:56:45,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1673 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-01-10 06:56:45,468 INFO L231 Difference]: Finished difference. Result has 91 places, 105 transitions, 1288 flow [2025-01-10 06:56:45,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1288, PETRI_PLACES=91, PETRI_TRANSITIONS=105} [2025-01-10 06:56:45,469 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 58 predicate places. [2025-01-10 06:56:45,469 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 105 transitions, 1288 flow [2025-01-10 06:56:45,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:45,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:45,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:45,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 06:56:45,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-01-10 06:56:45,673 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:45,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:45,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1552017020, now seen corresponding path program 1 times [2025-01-10 06:56:45,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:45,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557570326] [2025-01-10 06:56:45,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:45,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:45,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:56:45,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:45,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:45,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:45,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:45,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557570326] [2025-01-10 06:56:45,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557570326] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:45,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:45,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:56:45,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744069208] [2025-01-10 06:56:45,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:45,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:45,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:45,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:45,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:45,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:45,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 105 transitions, 1288 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:45,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:45,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:45,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:45,905 INFO L124 PetriNetUnfolderBase]: 524/1016 cut-off events. [2025-01-10 06:56:45,906 INFO L125 PetriNetUnfolderBase]: For 5150/5154 co-relation queries the response was YES. [2025-01-10 06:56:45,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4708 conditions, 1016 events. 524/1016 cut-off events. For 5150/5154 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5656 event pairs, 73 based on Foata normal form. 10/1026 useless extension candidates. Maximal degree in co-relation 4377. Up to 220 conditions per place. [2025-01-10 06:56:45,910 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 131 selfloop transitions, 45 changer transitions 5/183 dead transitions. [2025-01-10 06:56:45,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 183 transitions, 2311 flow [2025-01-10 06:56:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:56:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:56:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2025-01-10 06:56:45,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55859375 [2025-01-10 06:56:45,911 INFO L175 Difference]: Start difference. First operand has 91 places, 105 transitions, 1288 flow. Second operand 8 states and 143 transitions. [2025-01-10 06:56:45,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 183 transitions, 2311 flow [2025-01-10 06:56:45,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 183 transitions, 2266 flow, removed 16 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:45,922 INFO L231 Difference]: Finished difference. Result has 103 places, 130 transitions, 1691 flow [2025-01-10 06:56:45,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1691, PETRI_PLACES=103, PETRI_TRANSITIONS=130} [2025-01-10 06:56:45,923 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 70 predicate places. [2025-01-10 06:56:45,923 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 130 transitions, 1691 flow [2025-01-10 06:56:45,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:45,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:45,923 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:45,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-01-10 06:56:45,923 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:45,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash -392179891, now seen corresponding path program 1 times [2025-01-10 06:56:45,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:45,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535877745] [2025-01-10 06:56:45,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:45,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:45,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:56:45,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:45,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:45,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:45,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:45,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535877745] [2025-01-10 06:56:45,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535877745] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:45,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813256872] [2025-01-10 06:56:45,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:45,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:45,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:45,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:45,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 06:56:45,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:56:45,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:45,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:45,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:45,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:56:45,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:46,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:46,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813256872] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:46,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:56:46,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2025-01-10 06:56:46,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394007260] [2025-01-10 06:56:46,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:46,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:46,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:46,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:46,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:46,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:46,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 130 transitions, 1691 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:46,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:46,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:46,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:46,193 INFO L124 PetriNetUnfolderBase]: 560/1073 cut-off events. [2025-01-10 06:56:46,193 INFO L125 PetriNetUnfolderBase]: For 6762/6766 co-relation queries the response was YES. [2025-01-10 06:56:46,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5427 conditions, 1073 events. 560/1073 cut-off events. For 6762/6766 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5800 event pairs, 56 based on Foata normal form. 16/1089 useless extension candidates. Maximal degree in co-relation 5050. Up to 449 conditions per place. [2025-01-10 06:56:46,199 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 129 selfloop transitions, 56 changer transitions 3/190 dead transitions. [2025-01-10 06:56:46,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 190 transitions, 2616 flow [2025-01-10 06:56:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:56:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:56:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2025-01-10 06:56:46,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2025-01-10 06:56:46,200 INFO L175 Difference]: Start difference. First operand has 103 places, 130 transitions, 1691 flow. Second operand 7 states and 115 transitions. [2025-01-10 06:56:46,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 190 transitions, 2616 flow [2025-01-10 06:56:46,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 190 transitions, 2596 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-01-10 06:56:46,216 INFO L231 Difference]: Finished difference. Result has 112 places, 151 transitions, 2114 flow [2025-01-10 06:56:46,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2114, PETRI_PLACES=112, PETRI_TRANSITIONS=151} [2025-01-10 06:56:46,217 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 79 predicate places. [2025-01-10 06:56:46,217 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 151 transitions, 2114 flow [2025-01-10 06:56:46,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:46,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:46,217 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:46,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:46,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:46,418 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:46,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:46,418 INFO L85 PathProgramCache]: Analyzing trace with hash 780868741, now seen corresponding path program 2 times [2025-01-10 06:56:46,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:46,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796887452] [2025-01-10 06:56:46,418 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:46,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:46,422 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:46,426 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:46,426 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:56:46,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:46,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:46,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796887452] [2025-01-10 06:56:46,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796887452] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:46,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752318952] [2025-01-10 06:56:46,492 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:46,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:46,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:46,494 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:46,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 06:56:46,521 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:46,529 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:46,530 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:56:46,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:46,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:56:46,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:46,563 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:56:46,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752318952] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:46,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:56:46,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2025-01-10 06:56:46,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27854441] [2025-01-10 06:56:46,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:46,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:46,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:46,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:46,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-01-10 06:56:46,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:46,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 151 transitions, 2114 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:46,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:46,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:46,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:46,746 INFO L124 PetriNetUnfolderBase]: 558/1053 cut-off events. [2025-01-10 06:56:46,746 INFO L125 PetriNetUnfolderBase]: For 8404/8408 co-relation queries the response was YES. [2025-01-10 06:56:46,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5749 conditions, 1053 events. 558/1053 cut-off events. For 8404/8408 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5663 event pairs, 78 based on Foata normal form. 16/1069 useless extension candidates. Maximal degree in co-relation 5586. Up to 272 conditions per place. [2025-01-10 06:56:46,754 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 155 selfloop transitions, 33 changer transitions 8/198 dead transitions. [2025-01-10 06:56:46,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 198 transitions, 2940 flow [2025-01-10 06:56:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:56:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:56:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2025-01-10 06:56:46,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2025-01-10 06:56:46,755 INFO L175 Difference]: Start difference. First operand has 112 places, 151 transitions, 2114 flow. Second operand 7 states and 120 transitions. [2025-01-10 06:56:46,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 198 transitions, 2940 flow [2025-01-10 06:56:46,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 198 transitions, 2882 flow, removed 24 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:46,772 INFO L231 Difference]: Finished difference. Result has 118 places, 154 transitions, 2165 flow [2025-01-10 06:56:46,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2165, PETRI_PLACES=118, PETRI_TRANSITIONS=154} [2025-01-10 06:56:46,773 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 85 predicate places. [2025-01-10 06:56:46,773 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 154 transitions, 2165 flow [2025-01-10 06:56:46,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:46,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:46,774 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:46,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:46,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:46,975 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:46,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:46,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1384715273, now seen corresponding path program 3 times [2025-01-10 06:56:46,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:46,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68609884] [2025-01-10 06:56:46,976 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:56:46,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:46,979 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:46,981 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:46,981 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 06:56:46,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:47,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:47,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68609884] [2025-01-10 06:56:47,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68609884] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:47,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947641288] [2025-01-10 06:56:47,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:56:47,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:47,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:47,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:47,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 06:56:47,080 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:47,087 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:47,087 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 06:56:47,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:47,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:56:47,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:47,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:47,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947641288] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:47,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:56:47,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 13 [2025-01-10 06:56:47,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672438603] [2025-01-10 06:56:47,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:47,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:47,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:47,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:47,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-01-10 06:56:47,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:47,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 154 transitions, 2165 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:47,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:47,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:47,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:47,325 INFO L124 PetriNetUnfolderBase]: 662/1281 cut-off events. [2025-01-10 06:56:47,326 INFO L125 PetriNetUnfolderBase]: For 10122/10122 co-relation queries the response was YES. [2025-01-10 06:56:47,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7002 conditions, 1281 events. 662/1281 cut-off events. For 10122/10122 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7420 event pairs, 132 based on Foata normal form. 12/1289 useless extension candidates. Maximal degree in co-relation 6870. Up to 321 conditions per place. [2025-01-10 06:56:47,333 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 159 selfloop transitions, 63 changer transitions 5/229 dead transitions. [2025-01-10 06:56:47,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 229 transitions, 3439 flow [2025-01-10 06:56:47,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:47,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:47,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2025-01-10 06:56:47,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2025-01-10 06:56:47,335 INFO L175 Difference]: Start difference. First operand has 118 places, 154 transitions, 2165 flow. Second operand 6 states and 121 transitions. [2025-01-10 06:56:47,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 229 transitions, 3439 flow [2025-01-10 06:56:47,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 229 transitions, 3399 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-01-10 06:56:47,356 INFO L231 Difference]: Finished difference. Result has 124 places, 171 transitions, 2621 flow [2025-01-10 06:56:47,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2621, PETRI_PLACES=124, PETRI_TRANSITIONS=171} [2025-01-10 06:56:47,357 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 91 predicate places. [2025-01-10 06:56:47,357 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 171 transitions, 2621 flow [2025-01-10 06:56:47,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:47,357 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:47,357 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:47,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:47,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-01-10 06:56:47,558 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:47,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:47,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1412890702, now seen corresponding path program 2 times [2025-01-10 06:56:47,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:47,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250291620] [2025-01-10 06:56:47,559 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:47,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:47,562 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:47,565 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:47,565 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:56:47,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:47,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:47,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:47,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250291620] [2025-01-10 06:56:47,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250291620] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:47,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279487475] [2025-01-10 06:56:47,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:47,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:47,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:47,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:47,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 06:56:47,659 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:47,667 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:47,667 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:56:47,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:47,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:56:47,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:47,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:47,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279487475] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:47,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:56:47,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 13 [2025-01-10 06:56:47,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389907984] [2025-01-10 06:56:47,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:47,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:47,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:47,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:47,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2025-01-10 06:56:47,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:47,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 171 transitions, 2621 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:47,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:47,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:47,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:47,952 INFO L124 PetriNetUnfolderBase]: 740/1445 cut-off events. [2025-01-10 06:56:47,952 INFO L125 PetriNetUnfolderBase]: For 12820/12820 co-relation queries the response was YES. [2025-01-10 06:56:47,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8273 conditions, 1445 events. 740/1445 cut-off events. For 12820/12820 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8606 event pairs, 89 based on Foata normal form. 13/1458 useless extension candidates. Maximal degree in co-relation 8193. Up to 514 conditions per place. [2025-01-10 06:56:47,961 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 133 selfloop transitions, 85 changer transitions 3/223 dead transitions. [2025-01-10 06:56:47,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 223 transitions, 3625 flow [2025-01-10 06:56:47,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2025-01-10 06:56:47,962 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-01-10 06:56:47,962 INFO L175 Difference]: Start difference. First operand has 124 places, 171 transitions, 2621 flow. Second operand 6 states and 112 transitions. [2025-01-10 06:56:47,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 223 transitions, 3625 flow [2025-01-10 06:56:47,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 223 transitions, 3549 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-01-10 06:56:47,987 INFO L231 Difference]: Finished difference. Result has 130 places, 187 transitions, 3120 flow [2025-01-10 06:56:47,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3120, PETRI_PLACES=130, PETRI_TRANSITIONS=187} [2025-01-10 06:56:47,988 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 97 predicate places. [2025-01-10 06:56:47,988 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 187 transitions, 3120 flow [2025-01-10 06:56:47,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:47,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:47,988 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:47,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:48,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-10 06:56:48,189 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:48,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:48,189 INFO L85 PathProgramCache]: Analyzing trace with hash 704828455, now seen corresponding path program 4 times [2025-01-10 06:56:48,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:48,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880689273] [2025-01-10 06:56:48,189 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:56:48,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:48,192 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:48,195 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:48,195 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:56:48,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:48,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880689273] [2025-01-10 06:56:48,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880689273] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:48,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:48,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:56:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87074706] [2025-01-10 06:56:48,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:48,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:48,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:48,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:48,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:48,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:48,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 187 transitions, 3120 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:48,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:48,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:48,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:48,400 INFO L124 PetriNetUnfolderBase]: 684/1324 cut-off events. [2025-01-10 06:56:48,400 INFO L125 PetriNetUnfolderBase]: For 14941/14945 co-relation queries the response was YES. [2025-01-10 06:56:48,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8141 conditions, 1324 events. 684/1324 cut-off events. For 14941/14945 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7597 event pairs, 233 based on Foata normal form. 11/1335 useless extension candidates. Maximal degree in co-relation 7720. Up to 705 conditions per place. [2025-01-10 06:56:48,408 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 168 selfloop transitions, 25 changer transitions 8/203 dead transitions. [2025-01-10 06:56:48,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 203 transitions, 3599 flow [2025-01-10 06:56:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:56:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:56:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2025-01-10 06:56:48,409 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55625 [2025-01-10 06:56:48,409 INFO L175 Difference]: Start difference. First operand has 130 places, 187 transitions, 3120 flow. Second operand 5 states and 89 transitions. [2025-01-10 06:56:48,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 203 transitions, 3599 flow [2025-01-10 06:56:48,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 203 transitions, 3583 flow, removed 8 selfloop flow, removed 0 redundant places. [2025-01-10 06:56:48,438 INFO L231 Difference]: Finished difference. Result has 135 places, 179 transitions, 3027 flow [2025-01-10 06:56:48,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3030, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3027, PETRI_PLACES=135, PETRI_TRANSITIONS=179} [2025-01-10 06:56:48,439 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 102 predicate places. [2025-01-10 06:56:48,439 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 179 transitions, 3027 flow [2025-01-10 06:56:48,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:48,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:48,439 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:48,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-01-10 06:56:48,439 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:48,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:48,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1782922387, now seen corresponding path program 5 times [2025-01-10 06:56:48,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:48,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352302598] [2025-01-10 06:56:48,439 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 06:56:48,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:48,443 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:48,444 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:48,444 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:56:48,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:48,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:48,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352302598] [2025-01-10 06:56:48,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352302598] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:48,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156358942] [2025-01-10 06:56:48,463 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 06:56:48,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:48,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:48,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:48,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 06:56:48,490 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:48,497 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:48,497 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:56:48,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:48,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:56:48,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:48,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:48,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156358942] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:48,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:56:48,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-01-10 06:56:48,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938547285] [2025-01-10 06:56:48,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:48,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:48,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:48,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:48,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:56:48,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:48,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 179 transitions, 3027 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:48,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:48,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:48,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:48,731 INFO L124 PetriNetUnfolderBase]: 632/1240 cut-off events. [2025-01-10 06:56:48,732 INFO L125 PetriNetUnfolderBase]: For 15218/15222 co-relation queries the response was YES. [2025-01-10 06:56:48,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7689 conditions, 1240 events. 632/1240 cut-off events. For 15218/15222 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7034 event pairs, 89 based on Foata normal form. 16/1256 useless extension candidates. Maximal degree in co-relation 7454. Up to 373 conditions per place. [2025-01-10 06:56:48,741 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 138 selfloop transitions, 95 changer transitions 5/240 dead transitions. [2025-01-10 06:56:48,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 240 transitions, 4240 flow [2025-01-10 06:56:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:48,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2025-01-10 06:56:48,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2025-01-10 06:56:48,743 INFO L175 Difference]: Start difference. First operand has 135 places, 179 transitions, 3027 flow. Second operand 6 states and 118 transitions. [2025-01-10 06:56:48,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 240 transitions, 4240 flow [2025-01-10 06:56:48,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 240 transitions, 4151 flow, removed 21 selfloop flow, removed 4 redundant places. [2025-01-10 06:56:48,776 INFO L231 Difference]: Finished difference. Result has 137 places, 198 transitions, 3588 flow [2025-01-10 06:56:48,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3588, PETRI_PLACES=137, PETRI_TRANSITIONS=198} [2025-01-10 06:56:48,777 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 104 predicate places. [2025-01-10 06:56:48,777 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 198 transitions, 3588 flow [2025-01-10 06:56:48,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:48,777 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:48,777 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:48,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:48,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:48,978 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:48,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:48,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1014683588, now seen corresponding path program 3 times [2025-01-10 06:56:48,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:48,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572667752] [2025-01-10 06:56:48,978 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:56:48,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:48,981 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:48,983 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:48,983 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 06:56:48,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:49,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572667752] [2025-01-10 06:56:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572667752] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069898438] [2025-01-10 06:56:49,045 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:56:49,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:49,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:49,048 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:49,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 06:56:49,075 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:49,082 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:49,082 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 06:56:49,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:49,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:56:49,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:49,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:49,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069898438] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:49,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:56:49,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 13 [2025-01-10 06:56:49,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833221777] [2025-01-10 06:56:49,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:49,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:49,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:49,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:49,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-01-10 06:56:49,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:49,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 198 transitions, 3588 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:49,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:49,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:49,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:49,337 INFO L124 PetriNetUnfolderBase]: 561/1109 cut-off events. [2025-01-10 06:56:49,337 INFO L125 PetriNetUnfolderBase]: For 16052/16052 co-relation queries the response was YES. [2025-01-10 06:56:49,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7269 conditions, 1109 events. 561/1109 cut-off events. For 16052/16052 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6127 event pairs, 95 based on Foata normal form. 13/1121 useless extension candidates. Maximal degree in co-relation 6907. Up to 395 conditions per place. [2025-01-10 06:56:49,346 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 152 selfloop transitions, 77 changer transitions 1/232 dead transitions. [2025-01-10 06:56:49,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 232 transitions, 4337 flow [2025-01-10 06:56:49,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:49,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2025-01-10 06:56:49,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-01-10 06:56:49,347 INFO L175 Difference]: Start difference. First operand has 137 places, 198 transitions, 3588 flow. Second operand 6 states and 117 transitions. [2025-01-10 06:56:49,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 232 transitions, 4337 flow [2025-01-10 06:56:49,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 232 transitions, 4259 flow, removed 13 selfloop flow, removed 2 redundant places. [2025-01-10 06:56:49,379 INFO L231 Difference]: Finished difference. Result has 143 places, 198 transitions, 3807 flow [2025-01-10 06:56:49,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3389, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3807, PETRI_PLACES=143, PETRI_TRANSITIONS=198} [2025-01-10 06:56:49,380 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 110 predicate places. [2025-01-10 06:56:49,380 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 198 transitions, 3807 flow [2025-01-10 06:56:49,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:49,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:49,381 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:49,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 06:56:49,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:49,585 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:49,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:49,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1153809906, now seen corresponding path program 4 times [2025-01-10 06:56:49,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:49,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527055227] [2025-01-10 06:56:49,586 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:56:49,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:49,589 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:49,590 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:49,590 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:56:49,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:49,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:49,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527055227] [2025-01-10 06:56:49,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527055227] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:49,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:49,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:56:49,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868214497] [2025-01-10 06:56:49,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:49,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:49,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:49,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:49,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:49,617 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:49,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 198 transitions, 3807 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:49,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:49,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:49,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:49,805 INFO L124 PetriNetUnfolderBase]: 553/1089 cut-off events. [2025-01-10 06:56:49,806 INFO L125 PetriNetUnfolderBase]: For 18034/18034 co-relation queries the response was YES. [2025-01-10 06:56:49,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7444 conditions, 1089 events. 553/1089 cut-off events. For 18034/18034 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6002 event pairs, 82 based on Foata normal form. 6/1094 useless extension candidates. Maximal degree in co-relation 7192. Up to 338 conditions per place. [2025-01-10 06:56:49,837 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 156 selfloop transitions, 62 changer transitions 3/223 dead transitions. [2025-01-10 06:56:49,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 223 transitions, 4377 flow [2025-01-10 06:56:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:56:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:56:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2025-01-10 06:56:49,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2025-01-10 06:56:49,840 INFO L175 Difference]: Start difference. First operand has 143 places, 198 transitions, 3807 flow. Second operand 8 states and 136 transitions. [2025-01-10 06:56:49,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 223 transitions, 4377 flow [2025-01-10 06:56:49,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 223 transitions, 4309 flow, removed 9 selfloop flow, removed 4 redundant places. [2025-01-10 06:56:49,870 INFO L231 Difference]: Finished difference. Result has 146 places, 196 transitions, 3822 flow [2025-01-10 06:56:49,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3697, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3822, PETRI_PLACES=146, PETRI_TRANSITIONS=196} [2025-01-10 06:56:49,870 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 113 predicate places. [2025-01-10 06:56:49,870 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 196 transitions, 3822 flow [2025-01-10 06:56:49,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:49,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:49,871 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:49,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-01-10 06:56:49,871 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:49,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:49,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1467412134, now seen corresponding path program 5 times [2025-01-10 06:56:49,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:49,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212004690] [2025-01-10 06:56:49,872 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 06:56:49,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:49,875 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:49,877 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:49,877 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:56:49,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:49,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:49,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212004690] [2025-01-10 06:56:49,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212004690] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:49,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:49,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:56:49,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279966929] [2025-01-10 06:56:49,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:49,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:49,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:49,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:49,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:49,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:49,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 196 transitions, 3822 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:49,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:49,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:49,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:50,069 INFO L124 PetriNetUnfolderBase]: 493/968 cut-off events. [2025-01-10 06:56:50,069 INFO L125 PetriNetUnfolderBase]: For 17153/17153 co-relation queries the response was YES. [2025-01-10 06:56:50,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6768 conditions, 968 events. 493/968 cut-off events. For 17153/17153 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5149 event pairs, 80 based on Foata normal form. 10/977 useless extension candidates. Maximal degree in co-relation 6289. Up to 375 conditions per place. [2025-01-10 06:56:50,074 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 152 selfloop transitions, 33 changer transitions 9/196 dead transitions. [2025-01-10 06:56:50,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 196 transitions, 4013 flow [2025-01-10 06:56:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:56:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:56:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2025-01-10 06:56:50,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47767857142857145 [2025-01-10 06:56:50,075 INFO L175 Difference]: Start difference. First operand has 146 places, 196 transitions, 3822 flow. Second operand 7 states and 107 transitions. [2025-01-10 06:56:50,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 196 transitions, 4013 flow [2025-01-10 06:56:50,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 196 transitions, 3909 flow, removed 12 selfloop flow, removed 3 redundant places. [2025-01-10 06:56:50,104 INFO L231 Difference]: Finished difference. Result has 150 places, 178 transitions, 3426 flow [2025-01-10 06:56:50,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3466, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3426, PETRI_PLACES=150, PETRI_TRANSITIONS=178} [2025-01-10 06:56:50,105 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 117 predicate places. [2025-01-10 06:56:50,105 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 178 transitions, 3426 flow [2025-01-10 06:56:50,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:50,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:50,105 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:50,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-01-10 06:56:50,105 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:50,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash 306621341, now seen corresponding path program 6 times [2025-01-10 06:56:50,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666192757] [2025-01-10 06:56:50,106 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 06:56:50,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:50,109 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:50,110 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:50,110 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 06:56:50,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:50,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666192757] [2025-01-10 06:56:50,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666192757] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775960419] [2025-01-10 06:56:50,172 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 06:56:50,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:50,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:50,177 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:50,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 06:56:50,202 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 13 statements into 2 equivalence classes. [2025-01-10 06:56:50,209 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:50,209 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 06:56:50,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:50,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:56:50,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:50,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:56:50,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775960419] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:50,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:56:50,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2025-01-10 06:56:50,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104266083] [2025-01-10 06:56:50,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:50,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:50,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:50,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:50,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-01-10 06:56:50,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:50,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 178 transitions, 3426 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:50,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:50,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:50,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:50,398 INFO L124 PetriNetUnfolderBase]: 442/860 cut-off events. [2025-01-10 06:56:50,398 INFO L125 PetriNetUnfolderBase]: For 15267/15267 co-relation queries the response was YES. [2025-01-10 06:56:50,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6063 conditions, 860 events. 442/860 cut-off events. For 15267/15267 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4366 event pairs, 69 based on Foata normal form. 7/866 useless extension candidates. Maximal degree in co-relation 5927. Up to 288 conditions per place. [2025-01-10 06:56:50,403 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 125 selfloop transitions, 50 changer transitions 5/182 dead transitions. [2025-01-10 06:56:50,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 182 transitions, 3641 flow [2025-01-10 06:56:50,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:56:50,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:56:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2025-01-10 06:56:50,404 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48660714285714285 [2025-01-10 06:56:50,404 INFO L175 Difference]: Start difference. First operand has 150 places, 178 transitions, 3426 flow. Second operand 7 states and 109 transitions. [2025-01-10 06:56:50,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 182 transitions, 3641 flow [2025-01-10 06:56:50,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 182 transitions, 3506 flow, removed 9 selfloop flow, removed 8 redundant places. [2025-01-10 06:56:50,427 INFO L231 Difference]: Finished difference. Result has 142 places, 165 transitions, 3153 flow [2025-01-10 06:56:50,427 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3153, PETRI_PLACES=142, PETRI_TRANSITIONS=165} [2025-01-10 06:56:50,427 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 109 predicate places. [2025-01-10 06:56:50,427 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 165 transitions, 3153 flow [2025-01-10 06:56:50,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:50,428 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:50,428 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:50,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:50,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:50,628 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:50,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:50,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1570872311, now seen corresponding path program 1 times [2025-01-10 06:56:50,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:50,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567202927] [2025-01-10 06:56:50,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:50,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:50,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:56:50,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:56:50,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:50,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:50,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:50,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567202927] [2025-01-10 06:56:50,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567202927] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:50,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017263485] [2025-01-10 06:56:50,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:50,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:50,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:50,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:50,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 06:56:50,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:56:50,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:56:50,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:50,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:50,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:56:50,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:50,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:50,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017263485] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:50,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:50,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-01-10 06:56:50,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034053718] [2025-01-10 06:56:50,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:50,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 06:56:50,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:50,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 06:56:50,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2025-01-10 06:56:51,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2025-01-10 06:56:51,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 165 transitions, 3153 flow. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:51,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:51,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2025-01-10 06:56:51,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:53,173 INFO L124 PetriNetUnfolderBase]: 1153/2287 cut-off events. [2025-01-10 06:56:53,174 INFO L125 PetriNetUnfolderBase]: For 38310/38330 co-relation queries the response was YES. [2025-01-10 06:56:53,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15882 conditions, 2287 events. 1153/2287 cut-off events. For 38310/38330 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 15108 event pairs, 61 based on Foata normal form. 68/2349 useless extension candidates. Maximal degree in co-relation 15253. Up to 450 conditions per place. [2025-01-10 06:56:53,187 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 181 selfloop transitions, 356 changer transitions 7/554 dead transitions. [2025-01-10 06:56:53,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 554 transitions, 9782 flow [2025-01-10 06:56:53,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-01-10 06:56:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2025-01-10 06:56:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 717 transitions. [2025-01-10 06:56:53,189 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2948190789473684 [2025-01-10 06:56:53,189 INFO L175 Difference]: Start difference. First operand has 142 places, 165 transitions, 3153 flow. Second operand 76 states and 717 transitions. [2025-01-10 06:56:53,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 554 transitions, 9782 flow [2025-01-10 06:56:53,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 554 transitions, 9347 flow, removed 12 selfloop flow, removed 6 redundant places. [2025-01-10 06:56:53,257 INFO L231 Difference]: Finished difference. Result has 216 places, 412 transitions, 8524 flow [2025-01-10 06:56:53,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=8524, PETRI_PLACES=216, PETRI_TRANSITIONS=412} [2025-01-10 06:56:53,257 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 183 predicate places. [2025-01-10 06:56:53,257 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 412 transitions, 8524 flow [2025-01-10 06:56:53,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:53,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:53,257 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:53,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:53,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:53,459 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:53,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:53,459 INFO L85 PathProgramCache]: Analyzing trace with hash 752210397, now seen corresponding path program 1 times [2025-01-10 06:56:53,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:53,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690221560] [2025-01-10 06:56:53,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:53,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:53,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:56:53,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:56:53,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:53,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:53,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690221560] [2025-01-10 06:56:53,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690221560] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459738833] [2025-01-10 06:56:53,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:53,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:53,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:53,536 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:53,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 06:56:53,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:56:53,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:56:53,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:53,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:53,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:56:53,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:53,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:53,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459738833] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:53,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:53,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-01-10 06:56:53,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331531740] [2025-01-10 06:56:53,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:53,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 06:56:53,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:53,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 06:56:53,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2025-01-10 06:56:53,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2025-01-10 06:56:53,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 412 transitions, 8524 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:53,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:53,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2025-01-10 06:56:53,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:55,382 INFO L124 PetriNetUnfolderBase]: 1328/2589 cut-off events. [2025-01-10 06:56:55,382 INFO L125 PetriNetUnfolderBase]: For 44308/44308 co-relation queries the response was YES. [2025-01-10 06:56:55,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18541 conditions, 2589 events. 1328/2589 cut-off events. For 44308/44308 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 16853 event pairs, 112 based on Foata normal form. 56/2645 useless extension candidates. Maximal degree in co-relation 17942. Up to 692 conditions per place. [2025-01-10 06:56:55,399 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 328 changer transitions 18/557 dead transitions. [2025-01-10 06:56:55,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 557 transitions, 10936 flow [2025-01-10 06:56:55,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-01-10 06:56:55,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2025-01-10 06:56:55,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 521 transitions. [2025-01-10 06:56:55,402 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29602272727272727 [2025-01-10 06:56:55,402 INFO L175 Difference]: Start difference. First operand has 216 places, 412 transitions, 8524 flow. Second operand 55 states and 521 transitions. [2025-01-10 06:56:55,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 557 transitions, 10936 flow [2025-01-10 06:56:55,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 557 transitions, 9938 flow, removed 156 selfloop flow, removed 8 redundant places. [2025-01-10 06:56:55,532 INFO L231 Difference]: Finished difference. Result has 268 places, 423 transitions, 8569 flow [2025-01-10 06:56:55,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7566, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=8569, PETRI_PLACES=268, PETRI_TRANSITIONS=423} [2025-01-10 06:56:55,532 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 235 predicate places. [2025-01-10 06:56:55,532 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 423 transitions, 8569 flow [2025-01-10 06:56:55,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:55,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:55,532 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:55,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:55,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-01-10 06:56:55,733 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:55,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:55,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1861278405, now seen corresponding path program 2 times [2025-01-10 06:56:55,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:55,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610478395] [2025-01-10 06:56:55,734 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:55,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:55,736 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:56:55,737 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:56:55,738 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:56:55,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:55,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:55,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610478395] [2025-01-10 06:56:55,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610478395] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:55,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:55,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 06:56:55,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618203417] [2025-01-10 06:56:55,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:55,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 06:56:55,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:55,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 06:56:55,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-01-10 06:56:55,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:55,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 423 transitions, 8569 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:55,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:55,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:55,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:56,361 INFO L124 PetriNetUnfolderBase]: 1341/2659 cut-off events. [2025-01-10 06:56:56,361 INFO L125 PetriNetUnfolderBase]: For 44263/44263 co-relation queries the response was YES. [2025-01-10 06:56:56,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19497 conditions, 2659 events. 1341/2659 cut-off events. For 44263/44263 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 17789 event pairs, 210 based on Foata normal form. 16/2660 useless extension candidates. Maximal degree in co-relation 18989. Up to 1395 conditions per place. [2025-01-10 06:56:56,378 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 187 selfloop transitions, 287 changer transitions 3/509 dead transitions. [2025-01-10 06:56:56,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 509 transitions, 10929 flow [2025-01-10 06:56:56,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 06:56:56,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-10 06:56:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 225 transitions. [2025-01-10 06:56:56,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.439453125 [2025-01-10 06:56:56,379 INFO L175 Difference]: Start difference. First operand has 268 places, 423 transitions, 8569 flow. Second operand 16 states and 225 transitions. [2025-01-10 06:56:56,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 509 transitions, 10929 flow [2025-01-10 06:56:56,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 509 transitions, 10421 flow, removed 23 selfloop flow, removed 32 redundant places. [2025-01-10 06:56:56,521 INFO L231 Difference]: Finished difference. Result has 256 places, 475 transitions, 9952 flow [2025-01-10 06:56:56,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8106, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9952, PETRI_PLACES=256, PETRI_TRANSITIONS=475} [2025-01-10 06:56:56,522 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 223 predicate places. [2025-01-10 06:56:56,522 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 475 transitions, 9952 flow [2025-01-10 06:56:56,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:56,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:56,522 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:56,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-01-10 06:56:56,522 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:56,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1863383325, now seen corresponding path program 2 times [2025-01-10 06:56:56,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:56,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936293482] [2025-01-10 06:56:56,523 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:56,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:56,525 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:56:56,527 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:56:56,527 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:56:56,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:56,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:56,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:56,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936293482] [2025-01-10 06:56:56,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936293482] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:56,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314484176] [2025-01-10 06:56:56,601 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:56,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:56,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:56,603 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:56,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 06:56:56,628 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:56:56,636 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:56:56,637 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:56:56,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:56,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:56:56,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:56,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:56,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314484176] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:56,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:56,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-01-10 06:56:56,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097050405] [2025-01-10 06:56:56,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:56,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 06:56:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:56,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 06:56:56,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2025-01-10 06:56:56,958 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2025-01-10 06:56:56,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 475 transitions, 9952 flow. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:56,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:56,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2025-01-10 06:56:56,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:58,840 INFO L124 PetriNetUnfolderBase]: 2894/5766 cut-off events. [2025-01-10 06:56:58,840 INFO L125 PetriNetUnfolderBase]: For 99144/99254 co-relation queries the response was YES. [2025-01-10 06:56:58,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43513 conditions, 5766 events. 2894/5766 cut-off events. For 99144/99254 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 44809 event pairs, 223 based on Foata normal form. 128/5886 useless extension candidates. Maximal degree in co-relation 42445. Up to 1346 conditions per place. [2025-01-10 06:56:58,944 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 321 selfloop transitions, 749 changer transitions 18/1101 dead transitions. [2025-01-10 06:56:58,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 1101 transitions, 24006 flow [2025-01-10 06:56:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-01-10 06:56:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2025-01-10 06:56:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 494 transitions. [2025-01-10 06:56:58,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31505102040816324 [2025-01-10 06:56:58,945 INFO L175 Difference]: Start difference. First operand has 256 places, 475 transitions, 9952 flow. Second operand 49 states and 494 transitions. [2025-01-10 06:56:58,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 1101 transitions, 24006 flow [2025-01-10 06:56:59,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 1101 transitions, 23751 flow, removed 13 selfloop flow, removed 2 redundant places. [2025-01-10 06:56:59,408 INFO L231 Difference]: Finished difference. Result has 316 places, 944 transitions, 22094 flow [2025-01-10 06:56:59,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9823, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=22094, PETRI_PLACES=316, PETRI_TRANSITIONS=944} [2025-01-10 06:56:59,409 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 283 predicate places. [2025-01-10 06:56:59,409 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 944 transitions, 22094 flow [2025-01-10 06:56:59,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:59,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:59,409 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:59,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:59,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-01-10 06:56:59,610 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:56:59,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash 35652763, now seen corresponding path program 3 times [2025-01-10 06:56:59,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:59,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936995253] [2025-01-10 06:56:59,610 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:56:59,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:59,612 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:56:59,614 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:56:59,614 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 06:56:59,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:59,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:59,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936995253] [2025-01-10 06:56:59,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936995253] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:59,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:59,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 06:56:59,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90541645] [2025-01-10 06:56:59,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:59,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 06:56:59,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:59,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 06:56:59,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-01-10 06:56:59,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-01-10 06:56:59,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 944 transitions, 22094 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:59,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:59,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-01-10 06:56:59,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:57:01,014 INFO L124 PetriNetUnfolderBase]: 2960/5866 cut-off events. [2025-01-10 06:57:01,015 INFO L125 PetriNetUnfolderBase]: For 126149/126153 co-relation queries the response was YES. [2025-01-10 06:57:01,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47633 conditions, 5866 events. 2960/5866 cut-off events. For 126149/126153 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 45551 event pairs, 557 based on Foata normal form. 20/5855 useless extension candidates. Maximal degree in co-relation 46721. Up to 3195 conditions per place. [2025-01-10 06:57:01,065 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 396 selfloop transitions, 567 changer transitions 5/1000 dead transitions. [2025-01-10 06:57:01,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 1000 transitions, 25007 flow [2025-01-10 06:57:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 06:57:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-01-10 06:57:01,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 196 transitions. [2025-01-10 06:57:01,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2025-01-10 06:57:01,066 INFO L175 Difference]: Start difference. First operand has 316 places, 944 transitions, 22094 flow. Second operand 14 states and 196 transitions. [2025-01-10 06:57:01,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 1000 transitions, 25007 flow [2025-01-10 06:57:01,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 1000 transitions, 23528 flow, removed 142 selfloop flow, removed 9 redundant places. [2025-01-10 06:57:02,000 INFO L231 Difference]: Finished difference. Result has 324 places, 969 transitions, 22871 flow [2025-01-10 06:57:02,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=20688, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=22871, PETRI_PLACES=324, PETRI_TRANSITIONS=969} [2025-01-10 06:57:02,001 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 291 predicate places. [2025-01-10 06:57:02,001 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 969 transitions, 22871 flow [2025-01-10 06:57:02,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:02,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:57:02,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:57:02,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-01-10 06:57:02,002 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:57:02,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:57:02,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1445946447, now seen corresponding path program 4 times [2025-01-10 06:57:02,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:57:02,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568952979] [2025-01-10 06:57:02,002 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:57:02,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:57:02,005 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:57:02,007 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:57:02,007 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:57:02,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:02,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:57:02,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568952979] [2025-01-10 06:57:02,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568952979] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:57:02,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69234117] [2025-01-10 06:57:02,115 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:57:02,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:57:02,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:57:02,117 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:57:02,140 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:57:02,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 06:57:02,150 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:57:02,151 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:57:02,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:02,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:57:02,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:57:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:02,260 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:57:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:02,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69234117] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:57:02,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:57:02,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-01-10 06:57:02,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752214614] [2025-01-10 06:57:02,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:57:02,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 06:57:02,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:57:02,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 06:57:02,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2025-01-10 06:57:02,430 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2025-01-10 06:57:02,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 969 transitions, 22871 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:02,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:57:02,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2025-01-10 06:57:02,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:57:05,763 INFO L124 PetriNetUnfolderBase]: 5905/11270 cut-off events. [2025-01-10 06:57:05,764 INFO L125 PetriNetUnfolderBase]: For 223074/223078 co-relation queries the response was YES. [2025-01-10 06:57:05,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89557 conditions, 11270 events. 5905/11270 cut-off events. For 223074/223078 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 93652 event pairs, 417 based on Foata normal form. 52/11322 useless extension candidates. Maximal degree in co-relation 89000. Up to 2469 conditions per place. [2025-01-10 06:57:05,860 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 522 selfloop transitions, 1474 changer transitions 19/2017 dead transitions. [2025-01-10 06:57:05,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 2017 transitions, 48955 flow [2025-01-10 06:57:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-01-10 06:57:05,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2025-01-10 06:57:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 525 transitions. [2025-01-10 06:57:05,861 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29296875 [2025-01-10 06:57:05,862 INFO L175 Difference]: Start difference. First operand has 324 places, 969 transitions, 22871 flow. Second operand 56 states and 525 transitions. [2025-01-10 06:57:05,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 2017 transitions, 48955 flow [2025-01-10 06:57:08,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 2017 transitions, 47982 flow, removed 12 selfloop flow, removed 8 redundant places. [2025-01-10 06:57:08,195 INFO L231 Difference]: Finished difference. Result has 393 places, 1797 transitions, 46039 flow [2025-01-10 06:57:08,196 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=22208, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=736, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=46039, PETRI_PLACES=393, PETRI_TRANSITIONS=1797} [2025-01-10 06:57:08,196 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 360 predicate places. [2025-01-10 06:57:08,196 INFO L471 AbstractCegarLoop]: Abstraction has has 393 places, 1797 transitions, 46039 flow [2025-01-10 06:57:08,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:08,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:57:08,197 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:57:08,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-10 06:57:08,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-01-10 06:57:08,401 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:57:08,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:57:08,402 INFO L85 PathProgramCache]: Analyzing trace with hash -37908855, now seen corresponding path program 5 times [2025-01-10 06:57:08,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:57:08,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723413814] [2025-01-10 06:57:08,402 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 06:57:08,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:57:08,405 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:57:08,407 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:57:08,408 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:57:08,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:08,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:57:08,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723413814] [2025-01-10 06:57:08,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723413814] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:57:08,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582703946] [2025-01-10 06:57:08,501 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 06:57:08,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:57:08,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:57:08,503 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:57:08,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 06:57:08,526 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:57:08,534 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:57:08,534 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:57:08,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:08,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 06:57:08,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:57:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:08,613 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:57:08,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582703946] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:57:08,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:57:08,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2025-01-10 06:57:08,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986563957] [2025-01-10 06:57:08,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:57:08,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 06:57:08,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:57:08,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 06:57:08,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2025-01-10 06:57:08,641 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2025-01-10 06:57:08,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 1797 transitions, 46039 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:08,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:57:08,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2025-01-10 06:57:08,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:57:12,530 INFO L124 PetriNetUnfolderBase]: 5898/12038 cut-off events. [2025-01-10 06:57:12,530 INFO L125 PetriNetUnfolderBase]: For 344008/344144 co-relation queries the response was YES. [2025-01-10 06:57:12,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109227 conditions, 12038 events. 5898/12038 cut-off events. For 344008/344144 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 109704 event pairs, 565 based on Foata normal form. 114/12059 useless extension candidates. Maximal degree in co-relation 108729. Up to 3102 conditions per place. [2025-01-10 06:57:12,909 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 295 selfloop transitions, 1784 changer transitions 24/2165 dead transitions. [2025-01-10 06:57:12,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 2165 transitions, 59469 flow [2025-01-10 06:57:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 06:57:12,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-10 06:57:12,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2025-01-10 06:57:12,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2025-01-10 06:57:12,910 INFO L175 Difference]: Start difference. First operand has 393 places, 1797 transitions, 46039 flow. Second operand 11 states and 135 transitions. [2025-01-10 06:57:12,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 2165 transitions, 59469 flow [2025-01-10 06:57:17,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 2165 transitions, 58175 flow, removed 204 selfloop flow, removed 6 redundant places. [2025-01-10 06:57:17,169 INFO L231 Difference]: Finished difference. Result has 398 places, 2085 transitions, 56300 flow [2025-01-10 06:57:17,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=44917, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=56300, PETRI_PLACES=398, PETRI_TRANSITIONS=2085} [2025-01-10 06:57:17,171 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 365 predicate places. [2025-01-10 06:57:17,171 INFO L471 AbstractCegarLoop]: Abstraction has has 398 places, 2085 transitions, 56300 flow [2025-01-10 06:57:17,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:17,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:57:17,171 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:57:17,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-10 06:57:17,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:57:17,372 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:57:17,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:57:17,372 INFO L85 PathProgramCache]: Analyzing trace with hash 806048805, now seen corresponding path program 6 times [2025-01-10 06:57:17,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:57:17,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487875181] [2025-01-10 06:57:17,372 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 06:57:17,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:57:17,374 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:57:17,376 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:57:17,376 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-01-10 06:57:17,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:17,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:57:17,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487875181] [2025-01-10 06:57:17,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487875181] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:57:17,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:57:17,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 06:57:17,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027195315] [2025-01-10 06:57:17,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:57:17,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 06:57:17,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:57:17,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 06:57:17,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-10 06:57:17,500 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:57:17,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 2085 transitions, 56300 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:17,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:57:17,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:57:17,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:57:22,439 INFO L124 PetriNetUnfolderBase]: 6435/12727 cut-off events. [2025-01-10 06:57:22,439 INFO L125 PetriNetUnfolderBase]: For 357267/357267 co-relation queries the response was YES. [2025-01-10 06:57:22,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114400 conditions, 12727 events. 6435/12727 cut-off events. For 357267/357267 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 112867 event pairs, 835 based on Foata normal form. 4/12707 useless extension candidates. Maximal degree in co-relation 113821. Up to 6578 conditions per place. [2025-01-10 06:57:22,685 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 1055 selfloop transitions, 1033 changer transitions 0/2120 dead transitions. [2025-01-10 06:57:22,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 2120 transitions, 60862 flow [2025-01-10 06:57:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 06:57:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-10 06:57:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 217 transitions. [2025-01-10 06:57:22,686 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39889705882352944 [2025-01-10 06:57:22,686 INFO L175 Difference]: Start difference. First operand has 398 places, 2085 transitions, 56300 flow. Second operand 17 states and 217 transitions. [2025-01-10 06:57:22,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 2120 transitions, 60862 flow [2025-01-10 06:57:27,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 2120 transitions, 59651 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-01-10 06:57:27,778 INFO L231 Difference]: Finished difference. Result has 412 places, 2092 transitions, 57404 flow [2025-01-10 06:57:27,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=55095, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1026, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1056, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=57404, PETRI_PLACES=412, PETRI_TRANSITIONS=2092} [2025-01-10 06:57:27,781 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 379 predicate places. [2025-01-10 06:57:27,781 INFO L471 AbstractCegarLoop]: Abstraction has has 412 places, 2092 transitions, 57404 flow [2025-01-10 06:57:27,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:27,781 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:57:27,781 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:57:27,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-01-10 06:57:27,781 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:57:27,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:57:27,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1600619633, now seen corresponding path program 3 times [2025-01-10 06:57:27,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:57:27,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680439108] [2025-01-10 06:57:27,782 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:57:27,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:57:27,785 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:57:27,787 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:57:27,787 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 06:57:27,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:27,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:57:27,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680439108] [2025-01-10 06:57:27,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680439108] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:57:27,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:57:27,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 06:57:27,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897766364] [2025-01-10 06:57:27,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:57:27,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 06:57:27,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:57:27,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 06:57:27,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-10 06:57:27,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:57:27,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 2092 transitions, 57404 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:27,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:57:27,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:57:27,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:57:33,254 INFO L124 PetriNetUnfolderBase]: 6438/12714 cut-off events. [2025-01-10 06:57:33,254 INFO L125 PetriNetUnfolderBase]: For 368926/369014 co-relation queries the response was YES. [2025-01-10 06:57:33,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115002 conditions, 12714 events. 6438/12714 cut-off events. For 368926/369014 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 112603 event pairs, 816 based on Foata normal form. 19/12715 useless extension candidates. Maximal degree in co-relation 114387. Up to 6557 conditions per place. [2025-01-10 06:57:33,450 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 828 selfloop transitions, 1261 changer transitions 0/2121 dead transitions. [2025-01-10 06:57:33,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 2121 transitions, 61773 flow [2025-01-10 06:57:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 06:57:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-10 06:57:33,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 202 transitions. [2025-01-10 06:57:33,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2025-01-10 06:57:33,451 INFO L175 Difference]: Start difference. First operand has 412 places, 2092 transitions, 57404 flow. Second operand 16 states and 202 transitions. [2025-01-10 06:57:33,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 2121 transitions, 61773 flow [2025-01-10 06:57:38,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 2121 transitions, 59827 flow, removed 4 selfloop flow, removed 8 redundant places. [2025-01-10 06:57:38,516 INFO L231 Difference]: Finished difference. Result has 422 places, 2096 transitions, 58095 flow [2025-01-10 06:57:38,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=55460, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2092, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=58095, PETRI_PLACES=422, PETRI_TRANSITIONS=2096} [2025-01-10 06:57:38,518 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 389 predicate places. [2025-01-10 06:57:38,518 INFO L471 AbstractCegarLoop]: Abstraction has has 422 places, 2096 transitions, 58095 flow [2025-01-10 06:57:38,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:38,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:57:38,519 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:57:38,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2025-01-10 06:57:38,519 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:57:38,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:57:38,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1152495027, now seen corresponding path program 4 times [2025-01-10 06:57:38,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:57:38,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817918826] [2025-01-10 06:57:38,520 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:57:38,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:57:38,522 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:57:38,524 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:57:38,524 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:57:38,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:38,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:57:38,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817918826] [2025-01-10 06:57:38,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817918826] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:57:38,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274419495] [2025-01-10 06:57:38,584 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:57:38,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:57:38,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:57:38,586 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:57:38,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-10 06:57:38,614 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:57:38,622 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:57:38,622 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:57:38,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:38,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:57:38,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:57:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:38,735 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:57:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:38,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274419495] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:57:38,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:57:38,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-01-10 06:57:38,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824278426] [2025-01-10 06:57:38,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:57:38,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 06:57:38,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:57:38,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 06:57:38,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2025-01-10 06:57:38,908 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2025-01-10 06:57:38,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 2096 transitions, 58095 flow. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:38,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:57:38,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2025-01-10 06:57:38,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:57:44,496 INFO L124 PetriNetUnfolderBase]: 6542/12978 cut-off events. [2025-01-10 06:57:44,496 INFO L125 PetriNetUnfolderBase]: For 379331/379529 co-relation queries the response was YES. [2025-01-10 06:57:44,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117593 conditions, 12978 events. 6542/12978 cut-off events. For 379331/379529 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 115765 event pairs, 357 based on Foata normal form. 189/13159 useless extension candidates. Maximal degree in co-relation 116981. Up to 2183 conditions per place. [2025-01-10 06:57:44,645 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 1633 changer transitions 408/2214 dead transitions. [2025-01-10 06:57:44,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 2214 transitions, 63422 flow [2025-01-10 06:57:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-01-10 06:57:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2025-01-10 06:57:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 459 transitions. [2025-01-10 06:57:44,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.286875 [2025-01-10 06:57:44,646 INFO L175 Difference]: Start difference. First operand has 422 places, 2096 transitions, 58095 flow. Second operand 50 states and 459 transitions. [2025-01-10 06:57:44,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 2214 transitions, 63422 flow [2025-01-10 06:57:49,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 2214 transitions, 62673 flow, removed 19 selfloop flow, removed 6 redundant places. [2025-01-10 06:57:49,487 INFO L231 Difference]: Finished difference. Result has 471 places, 1747 transitions, 50972 flow [2025-01-10 06:57:49,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=57354, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2096, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1611, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=50972, PETRI_PLACES=471, PETRI_TRANSITIONS=1747} [2025-01-10 06:57:49,489 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 438 predicate places. [2025-01-10 06:57:49,489 INFO L471 AbstractCegarLoop]: Abstraction has has 471 places, 1747 transitions, 50972 flow [2025-01-10 06:57:49,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:49,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:57:49,489 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:57:49,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-10 06:57:49,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-01-10 06:57:49,690 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:57:49,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:57:49,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1405157335, now seen corresponding path program 7 times [2025-01-10 06:57:49,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:57:49,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878172502] [2025-01-10 06:57:49,690 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 06:57:49,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:57:49,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:57:49,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:57:49,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:57:49,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:49,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:57:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878172502] [2025-01-10 06:57:49,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878172502] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:57:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249350548] [2025-01-10 06:57:49,753 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 06:57:49,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:57:49,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:57:49,755 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:57:49,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 06:57:49,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:57:49,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:57:49,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:57:49,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:49,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:57:49,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:57:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:49,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:57:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:49,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249350548] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:57:49,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:57:49,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-01-10 06:57:49,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76583777] [2025-01-10 06:57:49,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:57:49,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 06:57:49,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:57:49,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 06:57:49,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2025-01-10 06:57:50,086 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2025-01-10 06:57:50,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1747 transitions, 50972 flow. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:50,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:57:50,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2025-01-10 06:57:50,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:57:53,713 INFO L124 PetriNetUnfolderBase]: 4940/9896 cut-off events. [2025-01-10 06:57:53,713 INFO L125 PetriNetUnfolderBase]: For 334349/334349 co-relation queries the response was YES. [2025-01-10 06:57:53,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94856 conditions, 9896 events. 4940/9896 cut-off events. For 334349/334349 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 84718 event pairs, 471 based on Foata normal form. 68/9940 useless extension candidates. Maximal degree in co-relation 94744. Up to 2711 conditions per place. [2025-01-10 06:57:53,834 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 654 selfloop transitions, 1077 changer transitions 70/1818 dead transitions. [2025-01-10 06:57:53,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 1818 transitions, 55889 flow [2025-01-10 06:57:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-10 06:57:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-10 06:57:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 192 transitions. [2025-01-10 06:57:53,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2025-01-10 06:57:53,834 INFO L175 Difference]: Start difference. First operand has 471 places, 1747 transitions, 50972 flow. Second operand 18 states and 192 transitions. [2025-01-10 06:57:53,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 1818 transitions, 55889 flow [2025-01-10 06:57:57,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 1818 transitions, 51522 flow, removed 104 selfloop flow, removed 38 redundant places. [2025-01-10 06:57:57,123 INFO L231 Difference]: Finished difference. Result has 423 places, 1724 transitions, 48294 flow [2025-01-10 06:57:57,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=46653, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=48294, PETRI_PLACES=423, PETRI_TRANSITIONS=1724} [2025-01-10 06:57:57,125 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 390 predicate places. [2025-01-10 06:57:57,125 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 1724 transitions, 48294 flow [2025-01-10 06:57:57,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:57,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:57:57,125 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:57:57,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 06:57:57,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:57:57,326 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:57:57,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:57:57,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1708512983, now seen corresponding path program 8 times [2025-01-10 06:57:57,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:57:57,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885388720] [2025-01-10 06:57:57,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:57:57,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:57:57,329 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:57:57,331 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:57:57,331 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:57:57,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:57,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:57:57,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885388720] [2025-01-10 06:57:57,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885388720] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:57:57,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667712765] [2025-01-10 06:57:57,399 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:57:57,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:57:57,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:57:57,400 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:57:57,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-10 06:57:57,426 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:57:57,434 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:57:57,435 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:57:57,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:57,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:57:57,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:57:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:57,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:57:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:57:57,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667712765] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:57:57,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:57:57,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-01-10 06:57:57,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267526260] [2025-01-10 06:57:57,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:57:57,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 06:57:57,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:57:57,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 06:57:57,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2025-01-10 06:57:57,681 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2025-01-10 06:57:57,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 1724 transitions, 48294 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:57:57,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:57:57,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2025-01-10 06:57:57,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:58:02,492 INFO L124 PetriNetUnfolderBase]: 6085/11837 cut-off events. [2025-01-10 06:58:02,493 INFO L125 PetriNetUnfolderBase]: For 352226/352230 co-relation queries the response was YES. [2025-01-10 06:58:02,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105619 conditions, 11837 events. 6085/11837 cut-off events. For 352226/352230 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 99737 event pairs, 484 based on Foata normal form. 248/12085 useless extension candidates. Maximal degree in co-relation 105517. Up to 2221 conditions per place. [2025-01-10 06:58:02,626 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 302 selfloop transitions, 1718 changer transitions 104/2126 dead transitions. [2025-01-10 06:58:02,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 2126 transitions, 61451 flow [2025-01-10 06:58:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-01-10 06:58:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2025-01-10 06:58:02,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 500 transitions. [2025-01-10 06:58:02,627 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2648305084745763 [2025-01-10 06:58:02,627 INFO L175 Difference]: Start difference. First operand has 423 places, 1724 transitions, 48294 flow. Second operand 59 states and 500 transitions. [2025-01-10 06:58:02,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 2126 transitions, 61451 flow [2025-01-10 06:58:05,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 2126 transitions, 59934 flow, removed 51 selfloop flow, removed 11 redundant places. [2025-01-10 06:58:06,022 INFO L231 Difference]: Finished difference. Result has 479 places, 1926 transitions, 56562 flow [2025-01-10 06:58:06,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=46912, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1462, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=56562, PETRI_PLACES=479, PETRI_TRANSITIONS=1926} [2025-01-10 06:58:06,023 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 446 predicate places. [2025-01-10 06:58:06,023 INFO L471 AbstractCegarLoop]: Abstraction has has 479 places, 1926 transitions, 56562 flow [2025-01-10 06:58:06,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:58:06,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:58:06,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:58:06,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-10 06:58:06,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:58:06,224 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:58:06,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:58:06,225 INFO L85 PathProgramCache]: Analyzing trace with hash 184184923, now seen corresponding path program 9 times [2025-01-10 06:58:06,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:58:06,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506966567] [2025-01-10 06:58:06,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:58:06,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:58:06,226 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:58:06,228 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:58:06,228 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 06:58:06,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:58:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:58:06,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:58:06,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506966567] [2025-01-10 06:58:06,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506966567] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:58:06,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:58:06,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 06:58:06,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447502774] [2025-01-10 06:58:06,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:58:06,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 06:58:06,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:58:06,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 06:58:06,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-10 06:58:06,340 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:58:06,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 1926 transitions, 56562 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:58:06,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:58:06,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:58:06,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:58:09,720 INFO L124 PetriNetUnfolderBase]: 5156/10346 cut-off events. [2025-01-10 06:58:09,720 INFO L125 PetriNetUnfolderBase]: For 348300/348300 co-relation queries the response was YES. [2025-01-10 06:58:09,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101285 conditions, 10346 events. 5156/10346 cut-off events. For 348300/348300 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 87753 event pairs, 582 based on Foata normal form. 4/10350 useless extension candidates. Maximal degree in co-relation 101174. Up to 4391 conditions per place. [2025-01-10 06:58:09,818 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 855 selfloop transitions, 1069 changer transitions 0/1950 dead transitions. [2025-01-10 06:58:09,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 1950 transitions, 60587 flow [2025-01-10 06:58:09,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 06:58:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-10 06:58:09,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 200 transitions. [2025-01-10 06:58:09,819 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.390625 [2025-01-10 06:58:09,819 INFO L175 Difference]: Start difference. First operand has 479 places, 1926 transitions, 56562 flow. Second operand 16 states and 200 transitions. [2025-01-10 06:58:09,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 1950 transitions, 60587 flow [2025-01-10 06:58:12,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 1950 transitions, 56940 flow, removed 198 selfloop flow, removed 32 redundant places. [2025-01-10 06:58:13,029 INFO L231 Difference]: Finished difference. Result has 451 places, 1928 transitions, 55123 flow [2025-01-10 06:58:13,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52915, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1926, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=857, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=55123, PETRI_PLACES=451, PETRI_TRANSITIONS=1928} [2025-01-10 06:58:13,031 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 418 predicate places. [2025-01-10 06:58:13,031 INFO L471 AbstractCegarLoop]: Abstraction has has 451 places, 1928 transitions, 55123 flow [2025-01-10 06:58:13,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:58:13,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:58:13,032 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:58:13,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2025-01-10 06:58:13,032 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:58:13,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:58:13,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1714519755, now seen corresponding path program 10 times [2025-01-10 06:58:13,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:58:13,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582642805] [2025-01-10 06:58:13,033 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:58:13,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:58:13,038 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:58:13,040 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:58:13,040 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:58:13,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:58:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:58:13,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:58:13,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582642805] [2025-01-10 06:58:13,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582642805] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:58:13,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:58:13,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 06:58:13,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282098998] [2025-01-10 06:58:13,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:58:13,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 06:58:13,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:58:13,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 06:58:13,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-10 06:58:13,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-01-10 06:58:13,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 1928 transitions, 55123 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:58:13,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:58:13,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-01-10 06:58:13,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand