./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d 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/array-eq-symm.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 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:07:31,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:07:31,076 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:07:31,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:07:31,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:07:31,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:07:31,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:07:31,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:07:31,094 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:07:31,094 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:07:31,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:07:31,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:07:31,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:07:31,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:07:31,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:07:31,095 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:07:31,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:07:31,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:07:31,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:07:31,096 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:07:31,096 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:07:31,096 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:07:31,096 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:07:31,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:07:31,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:07:31,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:07:31,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:07:31,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:07:31,096 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 -> 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d [2025-02-08 14:07:31,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:07:31,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:07:31,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:07:31,283 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:07:31,283 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:07:31,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2025-02-08 14:07:32,552 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/db4deb09c/2a6bf4dc1fac41a8a37ad039452a2142/FLAG5211ef5bd [2025-02-08 14:07:32,849 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:07:32,849 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2025-02-08 14:07:32,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/db4deb09c/2a6bf4dc1fac41a8a37ad039452a2142/FLAG5211ef5bd [2025-02-08 14:07:33,165 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/db4deb09c/2a6bf4dc1fac41a8a37ad039452a2142 [2025-02-08 14:07:33,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:07:33,170 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:07:33,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:07:33,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:07:33,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:07:33,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381a0da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33, skipping insertion in model container [2025-02-08 14:07:33,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,197 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:07:33,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:07:33,313 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:07:33,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:07:33,340 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:07:33,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33 WrapperNode [2025-02-08 14:07:33,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:07:33,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:07:33,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:07:33,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:07:33,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,365 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 105 [2025-02-08 14:07:33,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:07:33,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:07:33,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:07:33,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:07:33,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,381 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,392 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-08 14:07:33,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,401 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:07:33,407 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:07:33,407 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:07:33,407 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:07:33,408 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (1/1) ... [2025-02-08 14:07:33,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:07:33,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:33,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:07:33,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:07:33,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:07:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:07:33,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:07:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:07:33,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:07:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:07:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:07:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:07:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:07:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:07:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:07:33,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:07:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:07:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:07:33,454 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:07:33,510 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:07:33,511 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:07:33,673 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:07:33,673 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:07:33,805 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:07:33,805 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:07:33,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:07:33 BoogieIcfgContainer [2025-02-08 14:07:33,806 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:07:33,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:07:33,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:07:33,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:07:33,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:07:33" (1/3) ... [2025-02-08 14:07:33,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f84bf62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:07:33, skipping insertion in model container [2025-02-08 14:07:33,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:33" (2/3) ... [2025-02-08 14:07:33,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f84bf62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:07:33, skipping insertion in model container [2025-02-08 14:07:33,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:07:33" (3/3) ... [2025-02-08 14:07:33,812 INFO L128 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2025-02-08 14:07:33,821 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:07:33,822 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array-eq-symm.wvr.c that has 3 procedures, 37 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2025-02-08 14:07:33,825 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:07:33,869 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:07:33,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 98 flow [2025-02-08 14:07:33,914 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2025-02-08 14:07:33,917 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:07:33,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 6/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-08 14:07:33,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 98 flow [2025-02-08 14:07:33,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 85 flow [2025-02-08 14:07:33,932 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:07:33,943 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;@1de82ee8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:07:33,945 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-02-08 14:07:33,948 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:07:33,948 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:07:33,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:07:33,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:33,948 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:07:33,948 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:33,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:33,955 INFO L85 PathProgramCache]: Analyzing trace with hash 371859, now seen corresponding path program 1 times [2025-02-08 14:07:33,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:33,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325576827] [2025-02-08 14:07:33,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:33,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:34,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:07:34,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:07:34,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:34,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:34,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:34,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325576827] [2025-02-08 14:07:34,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325576827] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:34,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:34,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:07:34,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568082374] [2025-02-08 14:07:34,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:34,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:34,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:34,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:34,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:34,156 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2025-02-08 14:07:34,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:34,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:34,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2025-02-08 14:07:34,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:34,285 INFO L124 PetriNetUnfolderBase]: 155/313 cut-off events. [2025-02-08 14:07:34,286 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-08 14:07:34,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 313 events. 155/313 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1406 event pairs, 84 based on Foata normal form. 2/254 useless extension candidates. Maximal degree in co-relation 496. Up to 233 conditions per place. [2025-02-08 14:07:34,290 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 25 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2025-02-08 14:07:34,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 161 flow [2025-02-08 14:07:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:07:34,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:07:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2025-02-08 14:07:34,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2025-02-08 14:07:34,303 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 85 flow. Second operand 4 states and 92 transitions. [2025-02-08 14:07:34,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 161 flow [2025-02-08 14:07:34,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:07:34,309 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 140 flow [2025-02-08 14:07:34,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2025-02-08 14:07:34,313 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2025-02-08 14:07:34,313 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 140 flow [2025-02-08 14:07:34,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:34,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:34,313 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:07:34,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:07:34,314 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:34,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:34,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1806539103, now seen corresponding path program 1 times [2025-02-08 14:07:34,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:34,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605647886] [2025-02-08 14:07:34,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:34,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:34,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:07:34,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:07:34,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:34,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:34,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:34,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605647886] [2025-02-08 14:07:34,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605647886] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:34,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344523031] [2025-02-08 14:07:34,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:34,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:34,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:34,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:07:34,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:07:34,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:07:34,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:07:34,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:34,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:34,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:07:34,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:34,535 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:07:34,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344523031] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:34,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:07:34,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:07:34,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585772725] [2025-02-08 14:07:34,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:34,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:07:34,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:34,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:07:34,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:07:34,554 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2025-02-08 14:07:34,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:34,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:34,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2025-02-08 14:07:34,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:34,666 INFO L124 PetriNetUnfolderBase]: 155/311 cut-off events. [2025-02-08 14:07:34,667 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-02-08 14:07:34,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 311 events. 155/311 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1392 event pairs, 84 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 536. Up to 223 conditions per place. [2025-02-08 14:07:34,671 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 18 selfloop transitions, 12 changer transitions 0/42 dead transitions. [2025-02-08 14:07:34,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 192 flow [2025-02-08 14:07:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:07:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:07:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2025-02-08 14:07:34,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2025-02-08 14:07:34,674 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 140 flow. Second operand 6 states and 116 transitions. [2025-02-08 14:07:34,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 192 flow [2025-02-08 14:07:34,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:07:34,675 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 156 flow [2025-02-08 14:07:34,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2025-02-08 14:07:34,676 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2025-02-08 14:07:34,676 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 156 flow [2025-02-08 14:07:34,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:34,676 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:34,676 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:07:34,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:07:34,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:34,881 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:34,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:34,882 INFO L85 PathProgramCache]: Analyzing trace with hash -168137034, now seen corresponding path program 1 times [2025-02-08 14:07:34,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:34,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240398719] [2025-02-08 14:07:34,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:34,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:34,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:07:34,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:07:34,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:34,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:34,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:34,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240398719] [2025-02-08 14:07:34,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240398719] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011810046] [2025-02-08 14:07:34,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:34,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:34,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:34,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:07:34,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:07:34,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:07:34,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:07:34,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:34,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:34,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:07:34,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:35,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:35,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011810046] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:35,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:35,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:07:35,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873271053] [2025-02-08 14:07:35,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:35,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:07:35,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:35,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:07:35,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:07:35,066 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2025-02-08 14:07:35,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:35,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:35,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2025-02-08 14:07:35,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:35,201 INFO L124 PetriNetUnfolderBase]: 161/335 cut-off events. [2025-02-08 14:07:35,202 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2025-02-08 14:07:35,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 335 events. 161/335 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1564 event pairs, 84 based on Foata normal form. 6/282 useless extension candidates. Maximal degree in co-relation 538. Up to 234 conditions per place. [2025-02-08 14:07:35,203 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 23 selfloop transitions, 25 changer transitions 0/60 dead transitions. [2025-02-08 14:07:35,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 366 flow [2025-02-08 14:07:35,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:07:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:07:35,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2025-02-08 14:07:35,205 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2025-02-08 14:07:35,205 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 156 flow. Second operand 10 states and 194 transitions. [2025-02-08 14:07:35,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 366 flow [2025-02-08 14:07:35,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 308 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-08 14:07:35,207 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 296 flow [2025-02-08 14:07:35,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2025-02-08 14:07:35,208 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2025-02-08 14:07:35,208 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 296 flow [2025-02-08 14:07:35,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:35,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:35,208 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:35,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 14:07:35,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:35,412 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:35,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash -133973286, now seen corresponding path program 1 times [2025-02-08 14:07:35,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:35,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121394022] [2025-02-08 14:07:35,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:35,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:35,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:07:35,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:07:35,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:35,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:35,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:35,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121394022] [2025-02-08 14:07:35,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121394022] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:35,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:35,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:07:35,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502762058] [2025-02-08 14:07:35,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:35,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:35,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:35,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:35,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:35,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2025-02-08 14:07:35,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:35,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:35,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2025-02-08 14:07:35,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:35,553 INFO L124 PetriNetUnfolderBase]: 286/550 cut-off events. [2025-02-08 14:07:35,554 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2025-02-08 14:07:35,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 550 events. 286/550 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2670 event pairs, 51 based on Foata normal form. 14/482 useless extension candidates. Maximal degree in co-relation 1058. Up to 258 conditions per place. [2025-02-08 14:07:35,556 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 67 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2025-02-08 14:07:35,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 82 transitions, 485 flow [2025-02-08 14:07:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:07:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:07:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-02-08 14:07:35,557 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 14:07:35,557 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 296 flow. Second operand 4 states and 112 transitions. [2025-02-08 14:07:35,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 82 transitions, 485 flow [2025-02-08 14:07:35,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 461 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-08 14:07:35,560 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 294 flow [2025-02-08 14:07:35,560 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2025-02-08 14:07:35,561 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2025-02-08 14:07:35,561 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 294 flow [2025-02-08 14:07:35,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:35,561 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:35,561 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:35,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:07:35,561 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:35,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:35,562 INFO L85 PathProgramCache]: Analyzing trace with hash -566818999, now seen corresponding path program 1 times [2025-02-08 14:07:35,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:35,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368117040] [2025-02-08 14:07:35,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:35,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:35,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:07:35,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:07:35,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:35,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:35,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:35,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368117040] [2025-02-08 14:07:35,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368117040] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:35,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:35,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:07:35,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036452225] [2025-02-08 14:07:35,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:35,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:35,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:35,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:35,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:35,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2025-02-08 14:07:35,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:35,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:35,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2025-02-08 14:07:35,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:35,721 INFO L124 PetriNetUnfolderBase]: 458/857 cut-off events. [2025-02-08 14:07:35,721 INFO L125 PetriNetUnfolderBase]: For 199/223 co-relation queries the response was YES. [2025-02-08 14:07:35,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 857 events. 458/857 cut-off events. For 199/223 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4297 event pairs, 101 based on Foata normal form. 22/799 useless extension candidates. Maximal degree in co-relation 1786. Up to 393 conditions per place. [2025-02-08 14:07:35,725 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 70 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2025-02-08 14:07:35,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 510 flow [2025-02-08 14:07:35,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:07:35,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:07:35,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-02-08 14:07:35,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6488095238095238 [2025-02-08 14:07:35,726 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 294 flow. Second operand 4 states and 109 transitions. [2025-02-08 14:07:35,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 510 flow [2025-02-08 14:07:35,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 85 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:07:35,729 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 314 flow [2025-02-08 14:07:35,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2025-02-08 14:07:35,729 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 20 predicate places. [2025-02-08 14:07:35,730 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 314 flow [2025-02-08 14:07:35,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:35,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:35,730 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:35,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:07:35,730 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:35,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:35,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2009612107, now seen corresponding path program 1 times [2025-02-08 14:07:35,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:35,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045868252] [2025-02-08 14:07:35,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:35,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:35,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:07:35,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:07:35,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:35,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:07:35,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:35,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045868252] [2025-02-08 14:07:35,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045868252] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:35,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:35,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:07:35,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752876218] [2025-02-08 14:07:35,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:35,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:35,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:35,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:35,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:35,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-08 14:07:35,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:35,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:35,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-08 14:07:35,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:35,925 INFO L124 PetriNetUnfolderBase]: 450/963 cut-off events. [2025-02-08 14:07:35,925 INFO L125 PetriNetUnfolderBase]: For 330/332 co-relation queries the response was YES. [2025-02-08 14:07:35,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 963 events. 450/963 cut-off events. For 330/332 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5530 event pairs, 291 based on Foata normal form. 19/966 useless extension candidates. Maximal degree in co-relation 2103. Up to 624 conditions per place. [2025-02-08 14:07:35,929 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 72 selfloop transitions, 5 changer transitions 1/92 dead transitions. [2025-02-08 14:07:35,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 92 transitions, 604 flow [2025-02-08 14:07:35,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:07:35,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:07:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-02-08 14:07:35,930 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2025-02-08 14:07:35,930 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 314 flow. Second operand 5 states and 133 transitions. [2025-02-08 14:07:35,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 92 transitions, 604 flow [2025-02-08 14:07:35,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 601 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:07:35,933 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 345 flow [2025-02-08 14:07:35,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2025-02-08 14:07:35,933 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2025-02-08 14:07:35,933 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 345 flow [2025-02-08 14:07:35,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:35,934 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:35,934 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:35,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:07:35,934 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:35,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:35,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1376120868, now seen corresponding path program 1 times [2025-02-08 14:07:35,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:35,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378133303] [2025-02-08 14:07:35,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:35,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:35,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:07:35,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:07:35,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:35,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:07:36,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:36,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378133303] [2025-02-08 14:07:36,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378133303] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:36,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:36,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:07:36,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603778035] [2025-02-08 14:07:36,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:36,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:36,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:36,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:36,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:36,007 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-08 14:07:36,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:36,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:36,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-08 14:07:36,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:36,110 INFO L124 PetriNetUnfolderBase]: 403/859 cut-off events. [2025-02-08 14:07:36,111 INFO L125 PetriNetUnfolderBase]: For 350/352 co-relation queries the response was YES. [2025-02-08 14:07:36,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2003 conditions, 859 events. 403/859 cut-off events. For 350/352 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4692 event pairs, 259 based on Foata normal form. 5/848 useless extension candidates. Maximal degree in co-relation 1904. Up to 624 conditions per place. [2025-02-08 14:07:36,114 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 56 selfloop transitions, 4 changer transitions 12/86 dead transitions. [2025-02-08 14:07:36,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 588 flow [2025-02-08 14:07:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:07:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:07:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2025-02-08 14:07:36,115 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2025-02-08 14:07:36,115 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 345 flow. Second operand 5 states and 129 transitions. [2025-02-08 14:07:36,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 588 flow [2025-02-08 14:07:36,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 584 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 14:07:36,117 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 343 flow [2025-02-08 14:07:36,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2025-02-08 14:07:36,118 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2025-02-08 14:07:36,118 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 343 flow [2025-02-08 14:07:36,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:36,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:36,118 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:36,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:07:36,118 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:36,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:36,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1046448537, now seen corresponding path program 1 times [2025-02-08 14:07:36,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:36,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482101887] [2025-02-08 14:07:36,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:36,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:36,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:07:36,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:07:36,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:36,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:07:36,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:36,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482101887] [2025-02-08 14:07:36,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482101887] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:36,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:36,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:07:36,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216014434] [2025-02-08 14:07:36,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:36,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:07:36,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:36,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:07:36,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:07:36,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-08 14:07:36,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:36,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:36,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-08 14:07:36,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:36,321 INFO L124 PetriNetUnfolderBase]: 445/949 cut-off events. [2025-02-08 14:07:36,322 INFO L125 PetriNetUnfolderBase]: For 413/433 co-relation queries the response was YES. [2025-02-08 14:07:36,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2243 conditions, 949 events. 445/949 cut-off events. For 413/433 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5305 event pairs, 171 based on Foata normal form. 19/953 useless extension candidates. Maximal degree in co-relation 2143. Up to 333 conditions per place. [2025-02-08 14:07:36,325 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 67 selfloop transitions, 10 changer transitions 1/92 dead transitions. [2025-02-08 14:07:36,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 586 flow [2025-02-08 14:07:36,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:07:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:07:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2025-02-08 14:07:36,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2025-02-08 14:07:36,325 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 343 flow. Second operand 5 states and 141 transitions. [2025-02-08 14:07:36,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 586 flow [2025-02-08 14:07:36,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 570 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:07:36,328 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 350 flow [2025-02-08 14:07:36,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2025-02-08 14:07:36,328 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 30 predicate places. [2025-02-08 14:07:36,328 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 350 flow [2025-02-08 14:07:36,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:36,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:36,329 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-08 14:07:36,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:07:36,329 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:36,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1022094468, now seen corresponding path program 2 times [2025-02-08 14:07:36,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:36,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114118333] [2025-02-08 14:07:36,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:36,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:36,335 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:07:36,338 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:07:36,338 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:07:36,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:07:36,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:36,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114118333] [2025-02-08 14:07:36,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114118333] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:36,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39294684] [2025-02-08 14:07:36,358 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:36,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:36,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:36,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:07:36,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 14:07:36,396 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:07:36,402 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:07:36,402 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:07:36,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:36,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:07:36,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:07:36,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:07:36,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39294684] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:36,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:36,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:07:36,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180852013] [2025-02-08 14:07:36,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:36,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:36,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:36,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:36,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:36,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2025-02-08 14:07:36,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:36,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:36,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2025-02-08 14:07:36,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:36,572 INFO L124 PetriNetUnfolderBase]: 456/990 cut-off events. [2025-02-08 14:07:36,572 INFO L125 PetriNetUnfolderBase]: For 524/524 co-relation queries the response was YES. [2025-02-08 14:07:36,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2388 conditions, 990 events. 456/990 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5694 event pairs, 297 based on Foata normal form. 1/968 useless extension candidates. Maximal degree in co-relation 2290. Up to 756 conditions per place. [2025-02-08 14:07:36,577 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 36 selfloop transitions, 16 changer transitions 0/64 dead transitions. [2025-02-08 14:07:36,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 444 flow [2025-02-08 14:07:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:07:36,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:07:36,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2025-02-08 14:07:36,578 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-02-08 14:07:36,578 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 350 flow. Second operand 4 states and 80 transitions. [2025-02-08 14:07:36,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 444 flow [2025-02-08 14:07:36,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 433 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:07:36,581 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 361 flow [2025-02-08 14:07:36,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2025-02-08 14:07:36,582 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 30 predicate places. [2025-02-08 14:07:36,582 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 361 flow [2025-02-08 14:07:36,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:36,582 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:36,582 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:36,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 14:07:36,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:36,782 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:36,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:36,783 INFO L85 PathProgramCache]: Analyzing trace with hash -736624298, now seen corresponding path program 1 times [2025-02-08 14:07:36,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:36,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364206418] [2025-02-08 14:07:36,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:36,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:36,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:07:36,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:07:36,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:36,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:07:36,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:36,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364206418] [2025-02-08 14:07:36,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364206418] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:36,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:36,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:07:36,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94329369] [2025-02-08 14:07:36,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:36,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:07:36,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:36,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:07:36,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:07:36,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-08 14:07:36,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:36,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:36,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-08 14:07:36,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:37,115 INFO L124 PetriNetUnfolderBase]: 400/862 cut-off events. [2025-02-08 14:07:37,116 INFO L125 PetriNetUnfolderBase]: For 442/458 co-relation queries the response was YES. [2025-02-08 14:07:37,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 862 events. 400/862 cut-off events. For 442/458 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4641 event pairs, 142 based on Foata normal form. 5/850 useless extension candidates. Maximal degree in co-relation 1990. Up to 361 conditions per place. [2025-02-08 14:07:37,120 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 53 selfloop transitions, 9 changer transitions 8/83 dead transitions. [2025-02-08 14:07:37,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 83 transitions, 560 flow [2025-02-08 14:07:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:07:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:07:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2025-02-08 14:07:37,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2025-02-08 14:07:37,124 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 361 flow. Second operand 5 states and 135 transitions. [2025-02-08 14:07:37,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 83 transitions, 560 flow [2025-02-08 14:07:37,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 83 transitions, 528 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:07:37,128 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 340 flow [2025-02-08 14:07:37,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=340, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2025-02-08 14:07:37,128 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 32 predicate places. [2025-02-08 14:07:37,128 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 340 flow [2025-02-08 14:07:37,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:37,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:37,129 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-02-08 14:07:37,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 14:07:37,129 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:37,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:37,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1684047580, now seen corresponding path program 1 times [2025-02-08 14:07:37,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:37,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306869125] [2025-02-08 14:07:37,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:37,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:37,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:07:37,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:07:37,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:37,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:37,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:37,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306869125] [2025-02-08 14:07:37,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306869125] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:37,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162197952] [2025-02-08 14:07:37,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:37,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:37,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:37,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:07:37,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 14:07:37,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:07:37,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:07:37,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:37,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:37,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 14:07:37,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:37,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:37,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162197952] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:37,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:37,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-08 14:07:37,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680626132] [2025-02-08 14:07:37,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:37,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 14:07:37,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:37,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 14:07:37,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-08 14:07:37,552 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2025-02-08 14:07:37,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 340 flow. Second operand has 24 states, 24 states have (on average 15.083333333333334) internal successors, (362), 24 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:37,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:37,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2025-02-08 14:07:37,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:37,829 INFO L124 PetriNetUnfolderBase]: 416/929 cut-off events. [2025-02-08 14:07:37,830 INFO L125 PetriNetUnfolderBase]: For 784/786 co-relation queries the response was YES. [2025-02-08 14:07:37,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 929 events. 416/929 cut-off events. For 784/786 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5071 event pairs, 256 based on Foata normal form. 12/916 useless extension candidates. Maximal degree in co-relation 2038. Up to 642 conditions per place. [2025-02-08 14:07:37,835 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 26 selfloop transitions, 61 changer transitions 0/99 dead transitions. [2025-02-08 14:07:37,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 99 transitions, 760 flow [2025-02-08 14:07:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 14:07:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 14:07:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 396 transitions. [2025-02-08 14:07:37,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-02-08 14:07:37,837 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 340 flow. Second operand 22 states and 396 transitions. [2025-02-08 14:07:37,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 99 transitions, 760 flow [2025-02-08 14:07:37,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 99 transitions, 726 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-02-08 14:07:37,841 INFO L231 Difference]: Finished difference. Result has 91 places, 99 transitions, 720 flow [2025-02-08 14:07:37,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=720, PETRI_PLACES=91, PETRI_TRANSITIONS=99} [2025-02-08 14:07:37,842 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 52 predicate places. [2025-02-08 14:07:37,842 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 99 transitions, 720 flow [2025-02-08 14:07:37,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.083333333333334) internal successors, (362), 24 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:37,842 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:37,842 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:37,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 14:07:38,047 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,SelfDestructingSolverStorable10 [2025-02-08 14:07:38,047 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:38,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:38,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1562404375, now seen corresponding path program 1 times [2025-02-08 14:07:38,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:38,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254933151] [2025-02-08 14:07:38,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:38,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:38,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:07:38,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:07:38,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:38,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:07:38,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:38,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254933151] [2025-02-08 14:07:38,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254933151] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:38,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903957787] [2025-02-08 14:07:38,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:38,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:38,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:38,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:07:38,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 14:07:38,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:07:38,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:07:38,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:38,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:38,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:07:38,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:07:38,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:07:38,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903957787] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:38,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:38,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2025-02-08 14:07:38,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788459294] [2025-02-08 14:07:38,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:38,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 14:07:38,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:38,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 14:07:38,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2025-02-08 14:07:38,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2025-02-08 14:07:38,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 720 flow. Second operand has 19 states, 19 states have (on average 13.947368421052632) internal successors, (265), 19 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:38,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:38,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2025-02-08 14:07:38,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:38,913 INFO L124 PetriNetUnfolderBase]: 704/1447 cut-off events. [2025-02-08 14:07:38,913 INFO L125 PetriNetUnfolderBase]: For 896/928 co-relation queries the response was YES. [2025-02-08 14:07:38,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3601 conditions, 1447 events. 704/1447 cut-off events. For 896/928 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8622 event pairs, 196 based on Foata normal form. 44/1450 useless extension candidates. Maximal degree in co-relation 3468. Up to 294 conditions per place. [2025-02-08 14:07:38,920 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 93 selfloop transitions, 63 changer transitions 5/171 dead transitions. [2025-02-08 14:07:38,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 171 transitions, 1282 flow [2025-02-08 14:07:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:07:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:07:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 250 transitions. [2025-02-08 14:07:38,922 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45787545787545786 [2025-02-08 14:07:38,922 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 720 flow. Second operand 13 states and 250 transitions. [2025-02-08 14:07:38,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 171 transitions, 1282 flow [2025-02-08 14:07:38,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 171 transitions, 1126 flow, removed 47 selfloop flow, removed 9 redundant places. [2025-02-08 14:07:38,928 INFO L231 Difference]: Finished difference. Result has 94 places, 100 transitions, 699 flow [2025-02-08 14:07:38,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=699, PETRI_PLACES=94, PETRI_TRANSITIONS=100} [2025-02-08 14:07:38,930 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 55 predicate places. [2025-02-08 14:07:38,931 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 100 transitions, 699 flow [2025-02-08 14:07:38,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.947368421052632) internal successors, (265), 19 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:38,931 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:38,931 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:38,937 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 [2025-02-08 14:07:39,132 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,SelfDestructingSolverStorable11 [2025-02-08 14:07:39,132 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:39,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:39,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1889876730, now seen corresponding path program 1 times [2025-02-08 14:07:39,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:39,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585835172] [2025-02-08 14:07:39,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:39,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:39,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:07:39,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:07:39,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:39,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:07:39,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585835172] [2025-02-08 14:07:39,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585835172] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949817830] [2025-02-08 14:07:39,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:39,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:39,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:39,191 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:07:39,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 14:07:39,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:07:39,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:07:39,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:39,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:39,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:07:39,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:07:39,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:07:39,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949817830] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:39,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:39,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2025-02-08 14:07:39,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256588246] [2025-02-08 14:07:39,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:39,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 14:07:39,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:39,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 14:07:39,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2025-02-08 14:07:39,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2025-02-08 14:07:39,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 100 transitions, 699 flow. Second operand has 19 states, 19 states have (on average 14.263157894736842) internal successors, (271), 19 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:39,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:39,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2025-02-08 14:07:39,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:40,089 INFO L124 PetriNetUnfolderBase]: 620/1279 cut-off events. [2025-02-08 14:07:40,089 INFO L125 PetriNetUnfolderBase]: For 1220/1230 co-relation queries the response was YES. [2025-02-08 14:07:40,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3357 conditions, 1279 events. 620/1279 cut-off events. For 1220/1230 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7273 event pairs, 187 based on Foata normal form. 38/1276 useless extension candidates. Maximal degree in co-relation 3228. Up to 318 conditions per place. [2025-02-08 14:07:40,094 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 57 selfloop transitions, 60 changer transitions 31/157 dead transitions. [2025-02-08 14:07:40,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 157 transitions, 1226 flow [2025-02-08 14:07:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:07:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:07:40,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 243 transitions. [2025-02-08 14:07:40,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44505494505494503 [2025-02-08 14:07:40,097 INFO L175 Difference]: Start difference. First operand has 94 places, 100 transitions, 699 flow. Second operand 13 states and 243 transitions. [2025-02-08 14:07:40,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 157 transitions, 1226 flow [2025-02-08 14:07:40,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 157 transitions, 1174 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-08 14:07:40,104 INFO L231 Difference]: Finished difference. Result has 101 places, 96 transitions, 773 flow [2025-02-08 14:07:40,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=773, PETRI_PLACES=101, PETRI_TRANSITIONS=96} [2025-02-08 14:07:40,105 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2025-02-08 14:07:40,105 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 96 transitions, 773 flow [2025-02-08 14:07:40,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.263157894736842) internal successors, (271), 19 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:40,106 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:40,106 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:40,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 14:07:40,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-08 14:07:40,307 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:40,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:40,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1015870926, now seen corresponding path program 1 times [2025-02-08 14:07:40,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:40,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308515843] [2025-02-08 14:07:40,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:40,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:40,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 14:07:40,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 14:07:40,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:40,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:40,385 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 14:07:40,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:40,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308515843] [2025-02-08 14:07:40,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308515843] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:40,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578446048] [2025-02-08 14:07:40,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:40,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:40,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:40,388 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:07:40,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 14:07:40,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 14:07:40,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 14:07:40,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:40,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:40,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:07:40,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 14:07:40,596 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 14:07:40,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578446048] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:40,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:40,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2025-02-08 14:07:40,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14249699] [2025-02-08 14:07:40,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:40,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 14:07:40,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:40,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 14:07:40,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-02-08 14:07:40,820 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2025-02-08 14:07:40,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 96 transitions, 773 flow. Second operand has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:40,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:40,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2025-02-08 14:07:40,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:41,227 INFO L124 PetriNetUnfolderBase]: 882/1760 cut-off events. [2025-02-08 14:07:41,228 INFO L125 PetriNetUnfolderBase]: For 2089/2114 co-relation queries the response was YES. [2025-02-08 14:07:41,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4868 conditions, 1760 events. 882/1760 cut-off events. For 2089/2114 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 10195 event pairs, 188 based on Foata normal form. 44/1790 useless extension candidates. Maximal degree in co-relation 4684. Up to 357 conditions per place. [2025-02-08 14:07:41,236 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 170 selfloop transitions, 55 changer transitions 21/255 dead transitions. [2025-02-08 14:07:41,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 255 transitions, 2254 flow [2025-02-08 14:07:41,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 14:07:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 14:07:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 332 transitions. [2025-02-08 14:07:41,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4649859943977591 [2025-02-08 14:07:41,238 INFO L175 Difference]: Start difference. First operand has 101 places, 96 transitions, 773 flow. Second operand 17 states and 332 transitions. [2025-02-08 14:07:41,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 255 transitions, 2254 flow [2025-02-08 14:07:41,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 255 transitions, 2077 flow, removed 20 selfloop flow, removed 10 redundant places. [2025-02-08 14:07:41,246 INFO L231 Difference]: Finished difference. Result has 106 places, 124 transitions, 1202 flow [2025-02-08 14:07:41,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1202, PETRI_PLACES=106, PETRI_TRANSITIONS=124} [2025-02-08 14:07:41,247 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 67 predicate places. [2025-02-08 14:07:41,247 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 124 transitions, 1202 flow [2025-02-08 14:07:41,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:41,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:41,247 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:41,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 14:07:41,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:41,448 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:41,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1809270985, now seen corresponding path program 1 times [2025-02-08 14:07:41,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:41,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781370789] [2025-02-08 14:07:41,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:41,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:41,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 14:07:41,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 14:07:41,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:41,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 14:07:41,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:41,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781370789] [2025-02-08 14:07:41,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781370789] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:41,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046148917] [2025-02-08 14:07:41,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:41,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:41,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:41,513 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:07:41,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 14:07:41,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 14:07:41,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 14:07:41,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:41,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:41,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:07:41,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 14:07:41,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 14:07:41,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046148917] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:41,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:41,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2025-02-08 14:07:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395296448] [2025-02-08 14:07:41,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:41,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 14:07:41,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:41,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 14:07:41,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-02-08 14:07:41,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2025-02-08 14:07:41,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 124 transitions, 1202 flow. Second operand has 18 states, 18 states have (on average 14.555555555555555) internal successors, (262), 18 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:41,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:41,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2025-02-08 14:07:41,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:42,308 INFO L124 PetriNetUnfolderBase]: 1071/2094 cut-off events. [2025-02-08 14:07:42,308 INFO L125 PetriNetUnfolderBase]: For 2820/2874 co-relation queries the response was YES. [2025-02-08 14:07:42,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5829 conditions, 2094 events. 1071/2094 cut-off events. For 2820/2874 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11904 event pairs, 233 based on Foata normal form. 49/2125 useless extension candidates. Maximal degree in co-relation 5628. Up to 502 conditions per place. [2025-02-08 14:07:42,316 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 133 selfloop transitions, 53 changer transitions 55/250 dead transitions. [2025-02-08 14:07:42,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 250 transitions, 2439 flow [2025-02-08 14:07:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 14:07:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 14:07:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 323 transitions. [2025-02-08 14:07:42,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2025-02-08 14:07:42,317 INFO L175 Difference]: Start difference. First operand has 106 places, 124 transitions, 1202 flow. Second operand 17 states and 323 transitions. [2025-02-08 14:07:42,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 250 transitions, 2439 flow [2025-02-08 14:07:42,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 250 transitions, 2377 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-02-08 14:07:42,324 INFO L231 Difference]: Finished difference. Result has 119 places, 124 transitions, 1279 flow [2025-02-08 14:07:42,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1279, PETRI_PLACES=119, PETRI_TRANSITIONS=124} [2025-02-08 14:07:42,325 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 80 predicate places. [2025-02-08 14:07:42,325 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 124 transitions, 1279 flow [2025-02-08 14:07:42,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.555555555555555) internal successors, (262), 18 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:42,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:42,325 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:42,331 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 [2025-02-08 14:07:42,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-08 14:07:42,530 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:42,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:42,530 INFO L85 PathProgramCache]: Analyzing trace with hash -550289403, now seen corresponding path program 2 times [2025-02-08 14:07:42,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:42,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580493238] [2025-02-08 14:07:42,531 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:42,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:42,538 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-08 14:07:42,541 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 29 statements. [2025-02-08 14:07:42,541 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:07:42,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 14:07:42,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:42,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580493238] [2025-02-08 14:07:42,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580493238] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:42,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243980965] [2025-02-08 14:07:42,566 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:42,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:42,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:42,568 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:07:42,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 14:07:42,621 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-08 14:07:42,631 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 29 statements. [2025-02-08 14:07:42,631 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:07:42,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:42,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:07:42,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 14:07:42,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 14:07:42,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243980965] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:42,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:42,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-08 14:07:42,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108400821] [2025-02-08 14:07:42,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:42,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:07:42,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:42,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:07:42,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:07:42,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2025-02-08 14:07:42,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 124 transitions, 1279 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:42,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:42,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2025-02-08 14:07:42,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:42,859 INFO L124 PetriNetUnfolderBase]: 1054/2117 cut-off events. [2025-02-08 14:07:42,859 INFO L125 PetriNetUnfolderBase]: For 3395/3415 co-relation queries the response was YES. [2025-02-08 14:07:42,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 2117 events. 1054/2117 cut-off events. For 3395/3415 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 12436 event pairs, 442 based on Foata normal form. 32/2136 useless extension candidates. Maximal degree in co-relation 5966. Up to 1093 conditions per place. [2025-02-08 14:07:42,870 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 129 selfloop transitions, 8 changer transitions 3/150 dead transitions. [2025-02-08 14:07:42,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 150 transitions, 1692 flow [2025-02-08 14:07:42,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:07:42,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:07:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2025-02-08 14:07:42,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2025-02-08 14:07:42,875 INFO L175 Difference]: Start difference. First operand has 119 places, 124 transitions, 1279 flow. Second operand 5 states and 122 transitions. [2025-02-08 14:07:42,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 150 transitions, 1692 flow [2025-02-08 14:07:42,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 150 transitions, 1608 flow, removed 9 selfloop flow, removed 12 redundant places. [2025-02-08 14:07:42,884 INFO L231 Difference]: Finished difference. Result has 107 places, 123 transitions, 1229 flow [2025-02-08 14:07:42,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1229, PETRI_PLACES=107, PETRI_TRANSITIONS=123} [2025-02-08 14:07:42,884 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2025-02-08 14:07:42,884 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 123 transitions, 1229 flow [2025-02-08 14:07:42,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:42,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:42,885 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:42,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 14:07:43,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:43,086 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:43,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:43,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1144884096, now seen corresponding path program 2 times [2025-02-08 14:07:43,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:43,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3117999] [2025-02-08 14:07:43,086 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:43,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:43,094 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 14:07:43,098 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 31 statements. [2025-02-08 14:07:43,098 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:07:43,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 14:07:43,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:43,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3117999] [2025-02-08 14:07:43,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3117999] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:43,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228530384] [2025-02-08 14:07:43,149 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:43,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:43,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:43,151 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:07:43,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 14:07:43,198 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 14:07:43,209 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 31 statements. [2025-02-08 14:07:43,209 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:07:43,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:43,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:07:43,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 14:07:43,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 14:07:43,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228530384] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:43,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:43,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-08 14:07:43,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395835168] [2025-02-08 14:07:43,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:43,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:07:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:43,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:07:43,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:07:43,284 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2025-02-08 14:07:43,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 123 transitions, 1229 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:43,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:43,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2025-02-08 14:07:43,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:43,454 INFO L124 PetriNetUnfolderBase]: 802/1749 cut-off events. [2025-02-08 14:07:43,454 INFO L125 PetriNetUnfolderBase]: For 3229/3229 co-relation queries the response was YES. [2025-02-08 14:07:43,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5203 conditions, 1749 events. 802/1749 cut-off events. For 3229/3229 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 10269 event pairs, 391 based on Foata normal form. 39/1784 useless extension candidates. Maximal degree in co-relation 5001. Up to 907 conditions per place. [2025-02-08 14:07:43,460 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 80 selfloop transitions, 1 changer transitions 63/147 dead transitions. [2025-02-08 14:07:43,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 147 transitions, 1653 flow [2025-02-08 14:07:43,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:07:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:07:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-02-08 14:07:43,461 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2025-02-08 14:07:43,461 INFO L175 Difference]: Start difference. First operand has 107 places, 123 transitions, 1229 flow. Second operand 5 states and 117 transitions. [2025-02-08 14:07:43,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 147 transitions, 1653 flow [2025-02-08 14:07:43,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 147 transitions, 1611 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-08 14:07:43,469 INFO L231 Difference]: Finished difference. Result has 105 places, 84 transitions, 1035 flow [2025-02-08 14:07:43,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1035, PETRI_PLACES=105, PETRI_TRANSITIONS=84} [2025-02-08 14:07:43,470 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 66 predicate places. [2025-02-08 14:07:43,470 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 84 transitions, 1035 flow [2025-02-08 14:07:43,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:43,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:43,470 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2025-02-08 14:07:43,476 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 [2025-02-08 14:07:43,671 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,SelfDestructingSolverStorable16 [2025-02-08 14:07:43,671 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:07:43,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1361107620, now seen corresponding path program 2 times [2025-02-08 14:07:43,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:43,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240337980] [2025-02-08 14:07:43,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:43,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:43,686 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-08 14:07:43,688 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 35 statements. [2025-02-08 14:07:43,688 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:07:43,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:07:43,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:43,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240337980] [2025-02-08 14:07:43,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240337980] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:43,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792334516] [2025-02-08 14:07:43,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:43,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:43,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:43,713 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:07:43,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 14:07:43,765 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-08 14:07:43,772 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 35 statements. [2025-02-08 14:07:43,773 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:07:43,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:43,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:07:43,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:07:43,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:07:43,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792334516] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:43,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:43,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-08 14:07:43,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618695134] [2025-02-08 14:07:43,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:43,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:07:43,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:43,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:07:43,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:07:43,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2025-02-08 14:07:43,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 84 transitions, 1035 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:43,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:43,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2025-02-08 14:07:43,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:43,900 INFO L124 PetriNetUnfolderBase]: 12/144 cut-off events. [2025-02-08 14:07:43,900 INFO L125 PetriNetUnfolderBase]: For 737/737 co-relation queries the response was YES. [2025-02-08 14:07:43,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 144 events. 12/144 cut-off events. For 737/737 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 357 event pairs, 0 based on Foata normal form. 3/147 useless extension candidates. Maximal degree in co-relation 753. Up to 56 conditions per place. [2025-02-08 14:07:43,900 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2025-02-08 14:07:43,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 1175 flow [2025-02-08 14:07:43,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:07:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:07:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2025-02-08 14:07:43,901 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-02-08 14:07:43,901 INFO L175 Difference]: Start difference. First operand has 105 places, 84 transitions, 1035 flow. Second operand 4 states and 63 transitions. [2025-02-08 14:07:43,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 1175 flow [2025-02-08 14:07:43,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 989 flow, removed 3 selfloop flow, removed 15 redundant places. [2025-02-08 14:07:43,905 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2025-02-08 14:07:43,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2025-02-08 14:07:43,905 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 20 predicate places. [2025-02-08 14:07:43,906 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2025-02-08 14:07:43,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:07:43,908 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2025-02-08 14:07:43,908 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2025-02-08 14:07:43,908 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2025-02-08 14:07:43,908 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2025-02-08 14:07:43,908 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2025-02-08 14:07:43,908 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2025-02-08 14:07:43,908 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2025-02-08 14:07:43,908 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2025-02-08 14:07:43,908 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2025-02-08 14:07:43,909 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2025-02-08 14:07:43,909 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2025-02-08 14:07:43,909 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2025-02-08 14:07:43,909 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2025-02-08 14:07:43,909 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2025-02-08 14:07:43,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-08 14:07:44,109 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,SelfDestructingSolverStorable17 [2025-02-08 14:07:44,110 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:44,116 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 14:07:44,118 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 14:07:44,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 02:07:44 BasicIcfg [2025-02-08 14:07:44,121 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 14:07:44,122 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:07:44,122 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:07:44,122 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:07:44,122 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:07:33" (3/4) ... [2025-02-08 14:07:44,123 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 14:07:44,129 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-08 14:07:44,129 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-08 14:07:44,134 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 86 nodes and edges [2025-02-08 14:07:44,137 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2025-02-08 14:07:44,137 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-02-08 14:07:44,137 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-08 14:07:44,217 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 14:07:44,217 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 14:07:44,217 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:07:44,218 INFO L158 Benchmark]: Toolchain (without parser) took 11047.46ms. Allocated memory was 167.8MB in the beginning and 520.1MB in the end (delta: 352.3MB). Free memory was 123.4MB in the beginning and 371.3MB in the end (delta: -247.9MB). Peak memory consumption was 99.3MB. Max. memory is 16.1GB. [2025-02-08 14:07:44,218 INFO L158 Benchmark]: CDTParser took 0.88ms. Allocated memory is still 201.3MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:07:44,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.73ms. Allocated memory is still 167.8MB. Free memory was 123.4MB in the beginning and 111.4MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:07:44,219 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.57ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 110.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:07:44,219 INFO L158 Benchmark]: Boogie Preprocessor took 37.84ms. Allocated memory is still 167.8MB. Free memory was 110.2MB in the beginning and 108.7MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:07:44,220 INFO L158 Benchmark]: IcfgBuilder took 398.46ms. Allocated memory is still 167.8MB. Free memory was 108.7MB in the beginning and 70.8MB in the end (delta: 37.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-08 14:07:44,220 INFO L158 Benchmark]: TraceAbstraction took 10314.26ms. Allocated memory was 167.8MB in the beginning and 520.1MB in the end (delta: 352.3MB). Free memory was 70.2MB in the beginning and 379.0MB in the end (delta: -308.9MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2025-02-08 14:07:44,220 INFO L158 Benchmark]: Witness Printer took 95.18ms. Allocated memory is still 520.1MB. Free memory was 379.0MB in the beginning and 371.3MB in the end (delta: 7.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:07:44,221 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88ms. Allocated memory is still 201.3MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.73ms. Allocated memory is still 167.8MB. Free memory was 123.4MB in the beginning and 111.4MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.57ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 110.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.84ms. Allocated memory is still 167.8MB. Free memory was 110.2MB in the beginning and 108.7MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 398.46ms. Allocated memory is still 167.8MB. Free memory was 108.7MB in the beginning and 70.8MB in the end (delta: 37.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10314.26ms. Allocated memory was 167.8MB in the beginning and 520.1MB in the end (delta: 352.3MB). Free memory was 70.2MB in the beginning and 379.0MB in the end (delta: -308.9MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. * Witness Printer took 95.18ms. Allocated memory is still 520.1MB. Free memory was 379.0MB in the beginning and 371.3MB in the end (delta: 7.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.2s, OverallIterations: 18, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1575 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1445 mSDsluCounter, 1367 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1327 mSDsCounter, 141 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4460 IncrementalHoareTripleChecker+Invalid, 4601 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 141 mSolverCounterUnsat, 40 mSDtfsCounter, 4460 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 563 GetRequests, 353 SyntacticMatches, 9 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1279occurred in iteration=15, InterpolantAutomatonStates: 148, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 529 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 709 ConstructedInterpolants, 0 QuantifiedInterpolants, 2633 SizeOfPredicates, 47 NumberOfNonLiveVariables, 1381 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 39 InterpolantComputations, 8 PerfectInterpolantSequences, 681/924 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 14:07:44,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE