./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-queue-add-2.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/popl20-queue-add-2.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 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:13:36,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:13:36,829 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:13:36,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:13:36,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:13:36,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:13:36,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:13:36,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:13:36,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:13:36,858 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:13:36,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:13:36,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:13:36,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:13:36,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:13:36,859 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:13:36,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:13:36,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:13:36,860 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:13:36,861 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:13:36,861 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:13:36,861 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:13:36,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:13:36,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:13:36,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:13:36,862 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:13:36,862 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:13:36,862 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:13:36,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:13:36,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:13:36,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:13:36,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:13:36,862 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:13:36,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:13:36,863 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 -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2025-02-08 14:13:37,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:13:37,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:13:37,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:13:37,173 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:13:37,173 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:13:37,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2025-02-08 14:13:38,449 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/386642ad2/cd9fedc04ee649e9a006db3185531b64/FLAG5c6549959 [2025-02-08 14:13:38,755 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:13:38,755 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2025-02-08 14:13:38,766 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/386642ad2/cd9fedc04ee649e9a006db3185531b64/FLAG5c6549959 [2025-02-08 14:13:38,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/386642ad2/cd9fedc04ee649e9a006db3185531b64 [2025-02-08 14:13:38,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:13:38,788 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:13:38,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:13:38,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:13:38,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:13:38,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:13:38" (1/1) ... [2025-02-08 14:13:38,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bafcea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:38, skipping insertion in model container [2025-02-08 14:13:38,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:13:38" (1/1) ... [2025-02-08 14:13:38,820 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:13:38,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:13:38,984 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:13:39,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:13:39,036 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:13:39,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39 WrapperNode [2025-02-08 14:13:39,037 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:13:39,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:13:39,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:13:39,039 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:13:39,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (1/1) ... [2025-02-08 14:13:39,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (1/1) ... [2025-02-08 14:13:39,068 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 154 [2025-02-08 14:13:39,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:13:39,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:13:39,069 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:13:39,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:13:39,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (1/1) ... [2025-02-08 14:13:39,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (1/1) ... [2025-02-08 14:13:39,082 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (1/1) ... [2025-02-08 14:13:39,096 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 14:13:39,096 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (1/1) ... [2025-02-08 14:13:39,096 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (1/1) ... [2025-02-08 14:13:39,102 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (1/1) ... [2025-02-08 14:13:39,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (1/1) ... [2025-02-08 14:13:39,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (1/1) ... [2025-02-08 14:13:39,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (1/1) ... [2025-02-08 14:13:39,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:13:39,109 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:13:39,109 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:13:39,109 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:13:39,110 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (1/1) ... [2025-02-08 14:13:39,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:13:39,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:39,142 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 14:13:39,147 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 14:13:39,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:13:39,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:13:39,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:13:39,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:13:39,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:13:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:13:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:13:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:13:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:13:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:13:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:13:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:13:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:13:39,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:13:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:13:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:13:39,168 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 14:13:39,261 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:13:39,263 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:13:39,571 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:13:39,571 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:13:39,810 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:13:39,810 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:13:39,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:13:39 BoogieIcfgContainer [2025-02-08 14:13:39,811 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:13:39,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:13:39,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:13:39,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:13:39,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:13:38" (1/3) ... [2025-02-08 14:13:39,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70364a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:13:39, skipping insertion in model container [2025-02-08 14:13:39,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:39" (2/3) ... [2025-02-08 14:13:39,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70364a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:13:39, skipping insertion in model container [2025-02-08 14:13:39,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:13:39" (3/3) ... [2025-02-08 14:13:39,826 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2025-02-08 14:13:39,841 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:13:39,843 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-queue-add-2.wvr.c that has 3 procedures, 41 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-02-08 14:13:39,843 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:13:39,904 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:13:39,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 102 flow [2025-02-08 14:13:39,989 INFO L124 PetriNetUnfolderBase]: 4/42 cut-off events. [2025-02-08 14:13:39,994 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:13:40,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 42 events. 4/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 109 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-08 14:13:40,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 102 flow [2025-02-08 14:13:40,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 89 flow [2025-02-08 14:13:40,018 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:13:40,033 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;@37433a63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:13:40,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2025-02-08 14:13:40,038 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:13:40,039 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:13:40,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:13:40,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:40,040 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:13:40,041 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:40,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash 432991, now seen corresponding path program 1 times [2025-02-08 14:13:40,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:40,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786713577] [2025-02-08 14:13:40,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:40,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:40,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:13:40,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:13:40,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:40,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:40,297 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 14:13:40,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:40,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786713577] [2025-02-08 14:13:40,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786713577] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:40,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:40,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:40,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986563957] [2025-02-08 14:13:40,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:40,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:40,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:40,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:40,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:40,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-08 14:13:40,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 89 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 14:13:40,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:40,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-08 14:13:40,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:40,546 INFO L124 PetriNetUnfolderBase]: 159/326 cut-off events. [2025-02-08 14:13:40,549 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-02-08 14:13:40,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 326 events. 159/326 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1476 event pairs, 136 based on Foata normal form. 18/254 useless extension candidates. Maximal degree in co-relation 575. Up to 276 conditions per place. [2025-02-08 14:13:40,557 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 23 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2025-02-08 14:13:40,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 141 flow [2025-02-08 14:13:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2025-02-08 14:13:40,573 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5056818181818182 [2025-02-08 14:13:40,575 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 89 flow. Second operand 4 states and 89 transitions. [2025-02-08 14:13:40,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 141 flow [2025-02-08 14:13:40,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:13:40,587 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 105 flow [2025-02-08 14:13:40,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2025-02-08 14:13:40,595 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2025-02-08 14:13:40,595 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 105 flow [2025-02-08 14:13:40,595 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 14:13:40,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:40,595 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:13:40,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:13:40,596 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:40,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:40,596 INFO L85 PathProgramCache]: Analyzing trace with hash 14714090, now seen corresponding path program 1 times [2025-02-08 14:13:40,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:40,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184186596] [2025-02-08 14:13:40,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:40,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:40,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:13:40,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:13:40,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:40,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:40,807 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 14:13:40,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:40,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184186596] [2025-02-08 14:13:40,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184186596] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:40,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360499166] [2025-02-08 14:13:40,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:40,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:40,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:40,812 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 14:13:40,813 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 14:13:40,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:13:40,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:13:40,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:40,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:40,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:13:40,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:40,927 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 14:13:40,928 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:13:40,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360499166] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:40,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:13:40,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:13:40,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182036738] [2025-02-08 14:13:40,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:40,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:13:40,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:40,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:13:40,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:13:40,941 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-08 14:13:40,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 105 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 14:13:40,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:40,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-08 14:13:40,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:41,111 INFO L124 PetriNetUnfolderBase]: 159/325 cut-off events. [2025-02-08 14:13:41,111 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:13:41,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 325 events. 159/325 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1485 event pairs, 136 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 607. Up to 271 conditions per place. [2025-02-08 14:13:41,115 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 19 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2025-02-08 14:13:41,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 153 flow [2025-02-08 14:13:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:13:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:13:41,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2025-02-08 14:13:41,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2025-02-08 14:13:41,119 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 105 flow. Second operand 6 states and 111 transitions. [2025-02-08 14:13:41,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 153 flow [2025-02-08 14:13:41,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:41,120 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 112 flow [2025-02-08 14:13:41,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2025-02-08 14:13:41,121 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2025-02-08 14:13:41,121 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 112 flow [2025-02-08 14:13:41,122 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 14:13:41,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:41,122 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:13:41,130 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 14:13:41,326 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 14:13:41,326 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:41,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:41,327 INFO L85 PathProgramCache]: Analyzing trace with hash 17733160, now seen corresponding path program 1 times [2025-02-08 14:13:41,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:41,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414692632] [2025-02-08 14:13:41,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:41,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:41,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:13:41,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:13:41,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:41,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:41,493 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 14:13:41,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:41,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414692632] [2025-02-08 14:13:41,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414692632] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:41,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:41,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:41,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000207192] [2025-02-08 14:13:41,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:41,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:41,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:41,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:41,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:41,495 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-08 14:13:41,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 14:13:41,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:41,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-08 14:13:41,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:41,616 INFO L124 PetriNetUnfolderBase]: 171/360 cut-off events. [2025-02-08 14:13:41,618 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 14:13:41,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 360 events. 171/360 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1601 event pairs, 149 based on Foata normal form. 14/295 useless extension candidates. Maximal degree in co-relation 609. Up to 273 conditions per place. [2025-02-08 14:13:41,622 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 22 selfloop transitions, 2 changer transitions 8/45 dead transitions. [2025-02-08 14:13:41,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 193 flow [2025-02-08 14:13:41,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:41,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:41,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2025-02-08 14:13:41,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5795454545454546 [2025-02-08 14:13:41,627 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 112 flow. Second operand 4 states and 102 transitions. [2025-02-08 14:13:41,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 193 flow [2025-02-08 14:13:41,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 171 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-02-08 14:13:41,629 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2025-02-08 14:13:41,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2025-02-08 14:13:41,631 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2025-02-08 14:13:41,631 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2025-02-08 14:13:41,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 14:13:41,631 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:41,631 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:13:41,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:13:41,631 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:41,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:41,632 INFO L85 PathProgramCache]: Analyzing trace with hash 456137172, now seen corresponding path program 1 times [2025-02-08 14:13:41,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:41,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648299510] [2025-02-08 14:13:41,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:41,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:41,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:13:41,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:13:41,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:41,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:41,726 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 14:13:41,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:41,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648299510] [2025-02-08 14:13:41,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648299510] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:41,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617622197] [2025-02-08 14:13:41,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:41,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:41,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:41,730 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 14:13:41,733 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 14:13:41,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:13:41,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:13:41,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:41,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:41,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:13:41,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:41,821 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 14:13:41,821 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:41,871 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 14:13:41,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617622197] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:41,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:41,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:13:41,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501049075] [2025-02-08 14:13:41,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:41,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:13:41,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:41,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:13:41,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:13:41,892 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-08 14:13:41,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 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 14:13:41,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:41,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-08 14:13:41,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:42,068 INFO L124 PetriNetUnfolderBase]: 161/336 cut-off events. [2025-02-08 14:13:42,068 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2025-02-08 14:13:42,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 336 events. 161/336 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1542 event pairs, 136 based on Foata normal form. 3/248 useless extension candidates. Maximal degree in co-relation 729. Up to 277 conditions per place. [2025-02-08 14:13:42,071 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 22 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2025-02-08 14:13:42,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 202 flow [2025-02-08 14:13:42,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:13:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:13:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2025-02-08 14:13:42,074 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4022727272727273 [2025-02-08 14:13:42,075 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 10 states and 177 transitions. [2025-02-08 14:13:42,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 202 flow [2025-02-08 14:13:42,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:42,076 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 172 flow [2025-02-08 14:13:42,077 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=172, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2025-02-08 14:13:42,077 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2025-02-08 14:13:42,077 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 172 flow [2025-02-08 14:13:42,078 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 14:13:42,078 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:42,078 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:42,089 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 14:13:42,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:42,284 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:42,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:42,284 INFO L85 PathProgramCache]: Analyzing trace with hash 264191165, now seen corresponding path program 1 times [2025-02-08 14:13:42,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:42,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707940978] [2025-02-08 14:13:42,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:42,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:42,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:13:42,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:13:42,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:42,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:42,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:42,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707940978] [2025-02-08 14:13:42,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707940978] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:42,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569761416] [2025-02-08 14:13:42,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:42,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:42,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:42,473 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 14:13:42,475 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 14:13:42,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:13:42,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:13:42,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:42,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:42,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:13:42,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:42,565 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:13:42,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569761416] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:42,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:13:42,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-02-08 14:13:42,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096204039] [2025-02-08 14:13:42,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:42,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:42,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:42,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:42,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:13:42,566 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-08 14:13:42,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 14:13:42,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:42,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-08 14:13:42,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:42,618 INFO L124 PetriNetUnfolderBase]: 104/228 cut-off events. [2025-02-08 14:13:42,618 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2025-02-08 14:13:42,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 228 events. 104/228 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 899 event pairs, 83 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 470. Up to 187 conditions per place. [2025-02-08 14:13:42,620 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 29 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2025-02-08 14:13:42,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 220 flow [2025-02-08 14:13:42,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:42,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-02-08 14:13:42,621 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2025-02-08 14:13:42,621 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 172 flow. Second operand 3 states and 70 transitions. [2025-02-08 14:13:42,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 220 flow [2025-02-08 14:13:42,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 210 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:42,623 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 152 flow [2025-02-08 14:13:42,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2025-02-08 14:13:42,626 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2025-02-08 14:13:42,626 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 152 flow [2025-02-08 14:13:42,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 14:13:42,626 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:42,626 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:42,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 14:13:42,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:42,827 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:42,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:42,828 INFO L85 PathProgramCache]: Analyzing trace with hash 484653921, now seen corresponding path program 1 times [2025-02-08 14:13:42,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:42,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582286815] [2025-02-08 14:13:42,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:42,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:42,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:13:42,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:13:42,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:42,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:42,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:42,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582286815] [2025-02-08 14:13:42,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582286815] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:42,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:42,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:13:42,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667818216] [2025-02-08 14:13:42,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:42,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:42,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:42,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:42,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:42,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2025-02-08 14:13:42,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 152 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 14:13:42,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:42,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2025-02-08 14:13:42,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:43,028 INFO L124 PetriNetUnfolderBase]: 216/449 cut-off events. [2025-02-08 14:13:43,029 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2025-02-08 14:13:43,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 449 events. 216/449 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1986 event pairs, 109 based on Foata normal form. 12/418 useless extension candidates. Maximal degree in co-relation 921. Up to 281 conditions per place. [2025-02-08 14:13:43,032 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 47 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2025-02-08 14:13:43,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 300 flow [2025-02-08 14:13:43,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2025-02-08 14:13:43,033 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2025-02-08 14:13:43,033 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 152 flow. Second operand 4 states and 94 transitions. [2025-02-08 14:13:43,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 61 transitions, 300 flow [2025-02-08 14:13:43,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:43,035 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 180 flow [2025-02-08 14:13:43,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2025-02-08 14:13:43,036 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2025-02-08 14:13:43,036 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 180 flow [2025-02-08 14:13:43,036 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 14:13:43,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:43,036 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:43,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:13:43,036 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:43,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:43,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1106254996, now seen corresponding path program 1 times [2025-02-08 14:13:43,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:43,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397700047] [2025-02-08 14:13:43,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:43,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:43,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:13:43,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:13:43,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:43,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:43,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:43,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397700047] [2025-02-08 14:13:43,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397700047] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:43,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:43,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:43,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078248483] [2025-02-08 14:13:43,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:43,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:43,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:43,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:43,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:43,110 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-08 14:13:43,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 14:13:43,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:43,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-08 14:13:43,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:43,185 INFO L124 PetriNetUnfolderBase]: 133/332 cut-off events. [2025-02-08 14:13:43,186 INFO L125 PetriNetUnfolderBase]: For 114/129 co-relation queries the response was YES. [2025-02-08 14:13:43,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 332 events. 133/332 cut-off events. For 114/129 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1530 event pairs, 40 based on Foata normal form. 7/307 useless extension candidates. Maximal degree in co-relation 750. Up to 184 conditions per place. [2025-02-08 14:13:43,189 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 35 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2025-02-08 14:13:43,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 274 flow [2025-02-08 14:13:43,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:43,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:43,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2025-02-08 14:13:43,190 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2025-02-08 14:13:43,190 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 180 flow. Second operand 3 states and 75 transitions. [2025-02-08 14:13:43,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 274 flow [2025-02-08 14:13:43,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:43,192 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 200 flow [2025-02-08 14:13:43,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2025-02-08 14:13:43,193 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2025-02-08 14:13:43,193 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 200 flow [2025-02-08 14:13:43,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 14:13:43,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:43,194 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:43,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:13:43,194 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:43,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:43,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1664228954, now seen corresponding path program 1 times [2025-02-08 14:13:43,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:43,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242048151] [2025-02-08 14:13:43,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:43,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:43,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:13:43,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:13:43,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:43,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:43,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:43,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242048151] [2025-02-08 14:13:43,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242048151] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:43,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667479736] [2025-02-08 14:13:43,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:43,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:43,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:43,729 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 14:13:43,732 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 14:13:43,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:13:43,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:13:43,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:43,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:43,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 14:13:43,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:43,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-08 14:13:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:44,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:44,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2025-02-08 14:13:44,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:13:44,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 48 [2025-02-08 14:13:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:44,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667479736] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:44,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:44,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2025-02-08 14:13:44,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173540034] [2025-02-08 14:13:44,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:44,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 14:13:44,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:44,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 14:13:44,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2025-02-08 14:13:44,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-02-08 14:13:44,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 200 flow. Second operand has 20 states, 20 states have (on average 11.8) internal successors, (236), 20 states have internal predecessors, (236), 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 14:13:44,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:44,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-02-08 14:13:44,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:46,330 INFO L124 PetriNetUnfolderBase]: 951/2003 cut-off events. [2025-02-08 14:13:46,330 INFO L125 PetriNetUnfolderBase]: For 1192/1369 co-relation queries the response was YES. [2025-02-08 14:13:46,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4934 conditions, 2003 events. 951/2003 cut-off events. For 1192/1369 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 12006 event pairs, 102 based on Foata normal form. 96/1985 useless extension candidates. Maximal degree in co-relation 4918. Up to 336 conditions per place. [2025-02-08 14:13:46,349 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 164 selfloop transitions, 45 changer transitions 0/218 dead transitions. [2025-02-08 14:13:46,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 218 transitions, 1215 flow [2025-02-08 14:13:46,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 14:13:46,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-08 14:13:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 447 transitions. [2025-02-08 14:13:46,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2025-02-08 14:13:46,352 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 200 flow. Second operand 24 states and 447 transitions. [2025-02-08 14:13:46,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 218 transitions, 1215 flow [2025-02-08 14:13:46,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 218 transitions, 1124 flow, removed 41 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:46,358 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 531 flow [2025-02-08 14:13:46,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=531, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2025-02-08 14:13:46,359 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2025-02-08 14:13:46,359 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 531 flow [2025-02-08 14:13:46,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.8) internal successors, (236), 20 states have internal predecessors, (236), 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 14:13:46,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:46,359 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-08 14:13:46,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 14:13:46,564 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,SelfDestructingSolverStorable7 [2025-02-08 14:13:46,564 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:46,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:46,565 INFO L85 PathProgramCache]: Analyzing trace with hash -919776833, now seen corresponding path program 2 times [2025-02-08 14:13:46,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:46,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404307977] [2025-02-08 14:13:46,565 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:46,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:46,575 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:13:46,581 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:13:46,581 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:13:46,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:13:46,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:46,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404307977] [2025-02-08 14:13:46,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404307977] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:46,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068786820] [2025-02-08 14:13:46,636 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:46,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:46,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:46,639 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 14:13:46,641 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 14:13:46,681 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:13:46,695 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:13:46,695 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:13:46,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:46,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:13:46,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:13:46,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:13:46,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068786820] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:46,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:46,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:13:46,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491387722] [2025-02-08 14:13:46,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:46,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:46,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:46,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:46,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:46,748 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-08 14:13:46,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 531 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 14:13:46,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:46,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-08 14:13:46,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:46,960 INFO L124 PetriNetUnfolderBase]: 662/1446 cut-off events. [2025-02-08 14:13:46,961 INFO L125 PetriNetUnfolderBase]: For 5813/5971 co-relation queries the response was YES. [2025-02-08 14:13:46,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4934 conditions, 1446 events. 662/1446 cut-off events. For 5813/5971 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8540 event pairs, 418 based on Foata normal form. 35/1364 useless extension candidates. Maximal degree in co-relation 4904. Up to 1108 conditions per place. [2025-02-08 14:13:46,979 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 52 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2025-02-08 14:13:46,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 83 transitions, 655 flow [2025-02-08 14:13:46,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-02-08 14:13:46,980 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2025-02-08 14:13:46,980 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 531 flow. Second operand 4 states and 76 transitions. [2025-02-08 14:13:46,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 83 transitions, 655 flow [2025-02-08 14:13:46,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 618 flow, removed 10 selfloop flow, removed 8 redundant places. [2025-02-08 14:13:47,001 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 514 flow [2025-02-08 14:13:47,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=514, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2025-02-08 14:13:47,002 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2025-02-08 14:13:47,003 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 514 flow [2025-02-08 14:13:47,003 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 14:13:47,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:47,003 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:47,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 14:13:47,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:47,204 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:47,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:47,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2129886691, now seen corresponding path program 1 times [2025-02-08 14:13:47,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:47,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817797260] [2025-02-08 14:13:47,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:47,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:47,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:13:47,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:13:47,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:47,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:47,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817797260] [2025-02-08 14:13:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817797260] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542229193] [2025-02-08 14:13:47,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:47,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:47,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:47,581 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 14:13:47,584 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 14:13:47,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:13:47,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:13:47,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:47,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:47,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 14:13:47,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:47,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-08 14:13:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:47,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:48,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2025-02-08 14:13:48,241 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:13:48,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2025-02-08 14:13:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:48,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542229193] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:48,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:48,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2025-02-08 14:13:48,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511652971] [2025-02-08 14:13:48,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:48,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 14:13:48,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:48,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 14:13:48,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2025-02-08 14:13:48,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2025-02-08 14:13:48,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 514 flow. Second operand has 19 states, 19 states have (on average 12.894736842105264) internal successors, (245), 19 states have internal predecessors, (245), 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 14:13:48,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:48,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2025-02-08 14:13:48,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:49,729 INFO L124 PetriNetUnfolderBase]: 1058/2271 cut-off events. [2025-02-08 14:13:49,730 INFO L125 PetriNetUnfolderBase]: For 8582/8781 co-relation queries the response was YES. [2025-02-08 14:13:49,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7567 conditions, 2271 events. 1058/2271 cut-off events. For 8582/8781 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 13938 event pairs, 238 based on Foata normal form. 124/2364 useless extension candidates. Maximal degree in co-relation 7540. Up to 1189 conditions per place. [2025-02-08 14:13:49,749 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 131 selfloop transitions, 39 changer transitions 0/182 dead transitions. [2025-02-08 14:13:49,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 182 transitions, 1406 flow [2025-02-08 14:13:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 14:13:49,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-08 14:13:49,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 353 transitions. [2025-02-08 14:13:49,752 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4011363636363636 [2025-02-08 14:13:49,752 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 514 flow. Second operand 20 states and 353 transitions. [2025-02-08 14:13:49,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 182 transitions, 1406 flow [2025-02-08 14:13:49,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 182 transitions, 1376 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:13:49,777 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 789 flow [2025-02-08 14:13:49,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=789, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2025-02-08 14:13:49,778 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2025-02-08 14:13:49,778 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 789 flow [2025-02-08 14:13:49,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.894736842105264) internal successors, (245), 19 states have internal predecessors, (245), 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 14:13:49,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:49,779 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:49,787 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 14:13:49,979 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,SelfDestructingSolverStorable9 [2025-02-08 14:13:49,979 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:49,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:49,980 INFO L85 PathProgramCache]: Analyzing trace with hash -476132963, now seen corresponding path program 1 times [2025-02-08 14:13:49,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:49,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122033020] [2025-02-08 14:13:49,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:49,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:49,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:13:49,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:13:49,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:49,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:50,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:50,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122033020] [2025-02-08 14:13:50,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122033020] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:50,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367807599] [2025-02-08 14:13:50,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:50,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:50,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:50,143 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 14:13:50,145 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 14:13:50,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:13:50,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:13:50,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:50,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:50,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 14:13:50,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:50,284 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:50,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:50,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367807599] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:50,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:50,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-02-08 14:13:50,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932679040] [2025-02-08 14:13:50,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:50,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 14:13:50,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:50,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 14:13:50,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-02-08 14:13:50,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-08 14:13:50,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 789 flow. Second operand has 15 states, 15 states have (on average 15.533333333333333) internal successors, (233), 15 states have internal predecessors, (233), 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 14:13:50,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:50,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-08 14:13:50,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:50,651 INFO L124 PetriNetUnfolderBase]: 478/1084 cut-off events. [2025-02-08 14:13:50,651 INFO L125 PetriNetUnfolderBase]: For 7692/7797 co-relation queries the response was YES. [2025-02-08 14:13:50,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4059 conditions, 1084 events. 478/1084 cut-off events. For 7692/7797 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6451 event pairs, 295 based on Foata normal form. 83/1098 useless extension candidates. Maximal degree in co-relation 4024. Up to 587 conditions per place. [2025-02-08 14:13:50,660 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 54 selfloop transitions, 13 changer transitions 1/83 dead transitions. [2025-02-08 14:13:50,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 83 transitions, 645 flow [2025-02-08 14:13:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:13:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:13:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2025-02-08 14:13:50,662 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2025-02-08 14:13:50,662 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 789 flow. Second operand 8 states and 158 transitions. [2025-02-08 14:13:50,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 83 transitions, 645 flow [2025-02-08 14:13:50,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 83 transitions, 603 flow, removed 10 selfloop flow, removed 15 redundant places. [2025-02-08 14:13:50,676 INFO L231 Difference]: Finished difference. Result has 94 places, 67 transitions, 453 flow [2025-02-08 14:13:50,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=453, PETRI_PLACES=94, PETRI_TRANSITIONS=67} [2025-02-08 14:13:50,677 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2025-02-08 14:13:50,677 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 67 transitions, 453 flow [2025-02-08 14:13:50,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.533333333333333) internal successors, (233), 15 states have internal predecessors, (233), 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 14:13:50,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:50,678 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:50,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 14:13:50,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:50,878 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:50,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:50,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1775959653, now seen corresponding path program 1 times [2025-02-08 14:13:50,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:50,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80409277] [2025-02-08 14:13:50,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:50,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:50,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:13:50,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:13:50,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:50,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:51,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:51,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80409277] [2025-02-08 14:13:51,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80409277] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:51,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135659908] [2025-02-08 14:13:51,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:51,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:51,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:51,350 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 14:13:51,351 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 14:13:51,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:13:51,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:13:51,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:51,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:51,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 14:13:51,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:51,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:51,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:13:51,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2025-02-08 14:13:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 14:13:51,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135659908] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:51,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 14:13:51,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 16 [2025-02-08 14:13:51,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990605622] [2025-02-08 14:13:51,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:51,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:13:51,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:51,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:13:51,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2025-02-08 14:13:51,683 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-02-08 14:13:51,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 67 transitions, 453 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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 14:13:51,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:51,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-02-08 14:13:51,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:51,892 INFO L124 PetriNetUnfolderBase]: 662/1440 cut-off events. [2025-02-08 14:13:51,892 INFO L125 PetriNetUnfolderBase]: For 5865/5949 co-relation queries the response was YES. [2025-02-08 14:13:51,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4913 conditions, 1440 events. 662/1440 cut-off events. For 5865/5949 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8613 event pairs, 52 based on Foata normal form. 68/1504 useless extension candidates. Maximal degree in co-relation 4881. Up to 395 conditions per place. [2025-02-08 14:13:51,902 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 58 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2025-02-08 14:13:51,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 90 transitions, 761 flow [2025-02-08 14:13:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:13:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:13:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2025-02-08 14:13:51,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2025-02-08 14:13:51,903 INFO L175 Difference]: Start difference. First operand has 94 places, 67 transitions, 453 flow. Second operand 5 states and 107 transitions. [2025-02-08 14:13:51,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 90 transitions, 761 flow [2025-02-08 14:13:51,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 704 flow, removed 9 selfloop flow, removed 10 redundant places. [2025-02-08 14:13:51,919 INFO L231 Difference]: Finished difference. Result has 91 places, 70 transitions, 517 flow [2025-02-08 14:13:51,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=517, PETRI_PLACES=91, PETRI_TRANSITIONS=70} [2025-02-08 14:13:51,920 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2025-02-08 14:13:51,920 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 70 transitions, 517 flow [2025-02-08 14:13:51,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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 14:13:51,920 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:51,920 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:51,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 14:13:52,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:52,121 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:52,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:52,122 INFO L85 PathProgramCache]: Analyzing trace with hash 973765432, now seen corresponding path program 1 times [2025-02-08 14:13:52,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:52,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720312601] [2025-02-08 14:13:52,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:52,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:52,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 14:13:52,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:13:52,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:52,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:52,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:52,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720312601] [2025-02-08 14:13:52,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720312601] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:52,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263806133] [2025-02-08 14:13:52,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:52,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:52,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:52,566 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 14:13:52,568 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 14:13:52,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 14:13:52,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:13:52,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:52,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:52,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 14:13:52,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:52,769 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:52,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:13:52,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2025-02-08 14:13:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 14:13:52,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263806133] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:52,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 14:13:52,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 16 [2025-02-08 14:13:52,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820207181] [2025-02-08 14:13:52,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:52,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:13:52,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:52,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:13:52,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2025-02-08 14:13:52,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2025-02-08 14:13:52,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 70 transitions, 517 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 14:13:52,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:52,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2025-02-08 14:13:52,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:53,126 INFO L124 PetriNetUnfolderBase]: 619/1403 cut-off events. [2025-02-08 14:13:53,126 INFO L125 PetriNetUnfolderBase]: For 6008/6078 co-relation queries the response was YES. [2025-02-08 14:13:53,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5033 conditions, 1403 events. 619/1403 cut-off events. For 6008/6078 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8728 event pairs, 169 based on Foata normal form. 50/1426 useless extension candidates. Maximal degree in co-relation 5001. Up to 814 conditions per place. [2025-02-08 14:13:53,137 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 62 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2025-02-08 14:13:53,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 769 flow [2025-02-08 14:13:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:13:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:13:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2025-02-08 14:13:53,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-08 14:13:53,140 INFO L175 Difference]: Start difference. First operand has 91 places, 70 transitions, 517 flow. Second operand 5 states and 110 transitions. [2025-02-08 14:13:53,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 769 flow [2025-02-08 14:13:53,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 740 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:53,155 INFO L231 Difference]: Finished difference. Result has 95 places, 72 transitions, 555 flow [2025-02-08 14:13:53,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=555, PETRI_PLACES=95, PETRI_TRANSITIONS=72} [2025-02-08 14:13:53,157 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2025-02-08 14:13:53,157 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 555 flow [2025-02-08 14:13:53,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 14:13:53,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:53,157 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:53,164 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 14:13:53,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:53,358 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:53,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:53,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1263794674, now seen corresponding path program 2 times [2025-02-08 14:13:53,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:53,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965285803] [2025-02-08 14:13:53,358 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:53,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:53,364 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-08 14:13:53,370 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:13:53,370 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:13:53,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 14:13:53,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:53,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965285803] [2025-02-08 14:13:53,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965285803] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:53,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:53,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:13:53,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192471879] [2025-02-08 14:13:53,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:53,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:13:53,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:53,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:13:53,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:13:53,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-02-08 14:13:53,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 72 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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 14:13:53,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:53,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-02-08 14:13:53,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:53,627 INFO L124 PetriNetUnfolderBase]: 758/1576 cut-off events. [2025-02-08 14:13:53,627 INFO L125 PetriNetUnfolderBase]: For 6932/6992 co-relation queries the response was YES. [2025-02-08 14:13:53,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5717 conditions, 1576 events. 758/1576 cut-off events. For 6932/6992 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9541 event pairs, 237 based on Foata normal form. 39/1543 useless extension candidates. Maximal degree in co-relation 5682. Up to 528 conditions per place. [2025-02-08 14:13:53,638 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 87 selfloop transitions, 7 changer transitions 1/107 dead transitions. [2025-02-08 14:13:53,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 107 transitions, 1017 flow [2025-02-08 14:13:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:53,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-02-08 14:13:53,639 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2025-02-08 14:13:53,639 INFO L175 Difference]: Start difference. First operand has 95 places, 72 transitions, 555 flow. Second operand 4 states and 85 transitions. [2025-02-08 14:13:53,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 107 transitions, 1017 flow [2025-02-08 14:13:53,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 107 transitions, 987 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-08 14:13:53,655 INFO L231 Difference]: Finished difference. Result has 94 places, 71 transitions, 543 flow [2025-02-08 14:13:53,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=543, PETRI_PLACES=94, PETRI_TRANSITIONS=71} [2025-02-08 14:13:53,655 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2025-02-08 14:13:53,655 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 71 transitions, 543 flow [2025-02-08 14:13:53,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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 14:13:53,656 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:53,656 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:53,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 14:13:53,656 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:53,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:53,656 INFO L85 PathProgramCache]: Analyzing trace with hash 522929636, now seen corresponding path program 1 times [2025-02-08 14:13:53,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:53,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149074294] [2025-02-08 14:13:53,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:53,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:53,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:13:53,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:13:53,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:53,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 14:13:53,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:53,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149074294] [2025-02-08 14:13:53,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149074294] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:53,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387939355] [2025-02-08 14:13:53,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:53,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:53,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:53,716 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 14:13:53,718 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 14:13:53,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:13:53,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:13:53,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:53,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:53,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:13:53,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 14:13:53,810 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 14:13:53,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387939355] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:53,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:53,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:13:53,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880253095] [2025-02-08 14:13:53,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:53,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:13:53,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:53,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:13:53,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:13:53,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2025-02-08 14:13:53,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 71 transitions, 543 flow. Second operand has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 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 14:13:53,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:53,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2025-02-08 14:13:53,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:54,299 INFO L124 PetriNetUnfolderBase]: 1141/2454 cut-off events. [2025-02-08 14:13:54,300 INFO L125 PetriNetUnfolderBase]: For 13225/13502 co-relation queries the response was YES. [2025-02-08 14:13:54,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9555 conditions, 2454 events. 1141/2454 cut-off events. For 13225/13502 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 15360 event pairs, 329 based on Foata normal form. 122/2503 useless extension candidates. Maximal degree in co-relation 9522. Up to 962 conditions per place. [2025-02-08 14:13:54,317 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 166 selfloop transitions, 13 changer transitions 0/192 dead transitions. [2025-02-08 14:13:54,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 192 transitions, 1801 flow [2025-02-08 14:13:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:13:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:13:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2025-02-08 14:13:54,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5136363636363637 [2025-02-08 14:13:54,320 INFO L175 Difference]: Start difference. First operand has 94 places, 71 transitions, 543 flow. Second operand 10 states and 226 transitions. [2025-02-08 14:13:54,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 192 transitions, 1801 flow [2025-02-08 14:13:54,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 192 transitions, 1769 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:13:54,337 INFO L231 Difference]: Finished difference. Result has 103 places, 80 transitions, 609 flow [2025-02-08 14:13:54,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=609, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2025-02-08 14:13:54,337 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2025-02-08 14:13:54,337 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 609 flow [2025-02-08 14:13:54,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 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 14:13:54,337 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:54,338 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 14:13:54,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 14:13:54,538 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,SelfDestructingSolverStorable14 [2025-02-08 14:13:54,538 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:54,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:54,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1237558488, now seen corresponding path program 1 times [2025-02-08 14:13:54,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:54,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295379350] [2025-02-08 14:13:54,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:54,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:54,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:13:54,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:13:54,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:54,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:54,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:54,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295379350] [2025-02-08 14:13:54,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295379350] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:54,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61191072] [2025-02-08 14:13:54,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:54,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:54,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:54,645 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 14:13:54,647 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 14:13:54,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:13:54,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:13:54,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:54,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:54,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:13:54,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:54,753 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:13:54,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61191072] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:54,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:13:54,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-08 14:13:54,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113835857] [2025-02-08 14:13:54,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:54,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:54,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:54,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:13:54,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-08 14:13:54,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 609 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 14:13:54,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:54,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-08 14:13:54,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:55,063 INFO L124 PetriNetUnfolderBase]: 1158/2795 cut-off events. [2025-02-08 14:13:55,063 INFO L125 PetriNetUnfolderBase]: For 17194/17424 co-relation queries the response was YES. [2025-02-08 14:13:55,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11406 conditions, 2795 events. 1158/2795 cut-off events. For 17194/17424 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18120 event pairs, 219 based on Foata normal form. 73/2832 useless extension candidates. Maximal degree in co-relation 11370. Up to 954 conditions per place. [2025-02-08 14:13:55,087 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 73 selfloop transitions, 12 changer transitions 13/115 dead transitions. [2025-02-08 14:13:55,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 115 transitions, 1043 flow [2025-02-08 14:13:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-02-08 14:13:55,088 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2025-02-08 14:13:55,088 INFO L175 Difference]: Start difference. First operand has 103 places, 80 transitions, 609 flow. Second operand 4 states and 109 transitions. [2025-02-08 14:13:55,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 115 transitions, 1043 flow [2025-02-08 14:13:55,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 115 transitions, 973 flow, removed 28 selfloop flow, removed 5 redundant places. [2025-02-08 14:13:55,116 INFO L231 Difference]: Finished difference. Result has 100 places, 68 transitions, 550 flow [2025-02-08 14:13:55,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=550, PETRI_PLACES=100, PETRI_TRANSITIONS=68} [2025-02-08 14:13:55,117 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2025-02-08 14:13:55,118 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 68 transitions, 550 flow [2025-02-08 14:13:55,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 14:13:55,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:55,118 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:55,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 14:13:55,318 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,SelfDestructingSolverStorable15 [2025-02-08 14:13:55,319 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:55,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:55,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2023150325, now seen corresponding path program 2 times [2025-02-08 14:13:55,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:55,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212595881] [2025-02-08 14:13:55,321 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:55,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:55,329 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-08 14:13:55,343 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 14:13:55,343 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:13:55,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:13:55,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:55,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212595881] [2025-02-08 14:13:55,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212595881] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:55,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:55,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:13:55,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012022056] [2025-02-08 14:13:55,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:55,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:13:55,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:55,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:13:55,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:13:55,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-08 14:13:55,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 68 transitions, 550 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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 14:13:55,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:55,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-08 14:13:55,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:55,747 INFO L124 PetriNetUnfolderBase]: 1170/2630 cut-off events. [2025-02-08 14:13:55,747 INFO L125 PetriNetUnfolderBase]: For 18500/18627 co-relation queries the response was YES. [2025-02-08 14:13:55,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11051 conditions, 2630 events. 1170/2630 cut-off events. For 18500/18627 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 16536 event pairs, 120 based on Foata normal form. 63/2677 useless extension candidates. Maximal degree in co-relation 11013. Up to 926 conditions per place. [2025-02-08 14:13:55,769 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 80 selfloop transitions, 12 changer transitions 0/107 dead transitions. [2025-02-08 14:13:55,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 107 transitions, 1042 flow [2025-02-08 14:13:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:13:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:13:55,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2025-02-08 14:13:55,771 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5136363636363637 [2025-02-08 14:13:55,771 INFO L175 Difference]: Start difference. First operand has 100 places, 68 transitions, 550 flow. Second operand 5 states and 113 transitions. [2025-02-08 14:13:55,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 107 transitions, 1042 flow [2025-02-08 14:13:55,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 107 transitions, 908 flow, removed 58 selfloop flow, removed 8 redundant places. [2025-02-08 14:13:55,803 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 522 flow [2025-02-08 14:13:55,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2025-02-08 14:13:55,803 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2025-02-08 14:13:55,804 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 522 flow [2025-02-08 14:13:55,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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 14:13:55,804 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:55,805 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:55,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 14:13:55,805 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:13:55,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:55,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1029170163, now seen corresponding path program 1 times [2025-02-08 14:13:55,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:55,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162283573] [2025-02-08 14:13:55,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:55,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:55,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 14:13:55,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:13:55,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:55,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:56,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:56,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162283573] [2025-02-08 14:13:56,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162283573] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:56,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731826657] [2025-02-08 14:13:56,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:56,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:56,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:56,525 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:56,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 14:13:56,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 14:13:56,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:13:56,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:56,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:56,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-08 14:13:56,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:56,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 14:13:57,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:13:57,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2025-02-08 14:13:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:57,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:57,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 52 [2025-02-08 14:13:57,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:13:57,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 99 [2025-02-08 14:13:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:58,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731826657] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:58,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:58,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2025-02-08 14:13:58,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6364699] [2025-02-08 14:13:58,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:58,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-08 14:13:58,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:58,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-08 14:13:58,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1119, Unknown=0, NotChecked=0, Total=1260 [2025-02-08 14:13:58,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-02-08 14:13:58,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 522 flow. Second operand has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:58,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:58,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-02-08 14:13:58,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:02,859 INFO L124 PetriNetUnfolderBase]: 3452/7156 cut-off events. [2025-02-08 14:14:02,859 INFO L125 PetriNetUnfolderBase]: For 31331/31687 co-relation queries the response was YES. [2025-02-08 14:14:02,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27046 conditions, 7156 events. 3452/7156 cut-off events. For 31331/31687 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 53015 event pairs, 323 based on Foata normal form. 484/7623 useless extension candidates. Maximal degree in co-relation 27012. Up to 1303 conditions per place. [2025-02-08 14:14:02,907 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 410 selfloop transitions, 116 changer transitions 23/560 dead transitions. [2025-02-08 14:14:02,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 560 transitions, 4715 flow [2025-02-08 14:14:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-02-08 14:14:02,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2025-02-08 14:14:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 952 transitions. [2025-02-08 14:14:02,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2025-02-08 14:14:02,911 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 522 flow. Second operand 54 states and 952 transitions. [2025-02-08 14:14:02,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 560 transitions, 4715 flow [2025-02-08 14:14:02,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 560 transitions, 4692 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:14:02,964 INFO L231 Difference]: Finished difference. Result has 176 places, 175 transitions, 2375 flow [2025-02-08 14:14:02,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=2375, PETRI_PLACES=176, PETRI_TRANSITIONS=175} [2025-02-08 14:14:02,965 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 133 predicate places. [2025-02-08 14:14:02,965 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 175 transitions, 2375 flow [2025-02-08 14:14:02,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:02,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:02,965 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:02,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 14:14:03,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 14:14:03,166 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:14:03,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:03,168 INFO L85 PathProgramCache]: Analyzing trace with hash 214461150, now seen corresponding path program 1 times [2025-02-08 14:14:03,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:03,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055825286] [2025-02-08 14:14:03,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:03,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 14:14:03,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 14:14:03,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:03,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:03,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:03,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055825286] [2025-02-08 14:14:03,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055825286] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:03,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347691737] [2025-02-08 14:14:03,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:03,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:03,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:03,853 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:14:03,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 14:14:03,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 14:14:03,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 14:14:03,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:03,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:03,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 14:14:03,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:04,424 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 14:14:04,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:14:04,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 13 [2025-02-08 14:14:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:04,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:04,688 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2025-02-08 14:14:04,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 43 [2025-02-08 14:14:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:05,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347691737] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:05,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:05,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2025-02-08 14:14:05,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314962220] [2025-02-08 14:14:05,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:05,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-08 14:14:05,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:05,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-08 14:14:05,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1074, Unknown=0, NotChecked=0, Total=1260 [2025-02-08 14:14:05,765 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2025-02-08 14:14:05,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 175 transitions, 2375 flow. Second operand has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 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 14:14:05,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:05,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2025-02-08 14:14:05,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:07,459 INFO L124 PetriNetUnfolderBase]: 2227/5010 cut-off events. [2025-02-08 14:14:07,460 INFO L125 PetriNetUnfolderBase]: For 115520/115856 co-relation queries the response was YES. [2025-02-08 14:14:07,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27680 conditions, 5010 events. 2227/5010 cut-off events. For 115520/115856 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 36964 event pairs, 195 based on Foata normal form. 242/5238 useless extension candidates. Maximal degree in co-relation 27609. Up to 1228 conditions per place. [2025-02-08 14:14:07,499 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 195 selfloop transitions, 52 changer transitions 16/283 dead transitions. [2025-02-08 14:14:07,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 283 transitions, 3149 flow [2025-02-08 14:14:07,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 14:14:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-08 14:14:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 402 transitions. [2025-02-08 14:14:07,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2025-02-08 14:14:07,501 INFO L175 Difference]: Start difference. First operand has 176 places, 175 transitions, 2375 flow. Second operand 24 states and 402 transitions. [2025-02-08 14:14:07,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 283 transitions, 3149 flow [2025-02-08 14:14:07,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 283 transitions, 2720 flow, removed 190 selfloop flow, removed 27 redundant places. [2025-02-08 14:14:07,865 INFO L231 Difference]: Finished difference. Result has 160 places, 124 transitions, 1408 flow [2025-02-08 14:14:07,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1408, PETRI_PLACES=160, PETRI_TRANSITIONS=124} [2025-02-08 14:14:07,865 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 117 predicate places. [2025-02-08 14:14:07,865 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 124 transitions, 1408 flow [2025-02-08 14:14:07,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 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 14:14:07,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:07,866 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:07,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 14:14:08,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:08,066 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:14:08,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:08,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1973178658, now seen corresponding path program 2 times [2025-02-08 14:14:08,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:08,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021644681] [2025-02-08 14:14:08,067 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:08,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:08,076 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-08 14:14:08,094 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 14:14:08,095 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:08,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:08,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:08,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021644681] [2025-02-08 14:14:08,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021644681] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:08,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254620145] [2025-02-08 14:14:08,812 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:08,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:08,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:08,815 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:14:08,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 14:14:08,868 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-08 14:14:08,889 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 14:14:08,889 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:08,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:08,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-08 14:14:08,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:08,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-08 14:14:09,313 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2025-02-08 14:14:09,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2025-02-08 14:14:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:09,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:09,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 68 [2025-02-08 14:14:09,932 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2025-02-08 14:14:09,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 137 treesize of output 135 [2025-02-08 14:14:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:10,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254620145] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:10,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:10,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2025-02-08 14:14:10,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865959318] [2025-02-08 14:14:10,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:10,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-08 14:14:10,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:10,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-08 14:14:10,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2025-02-08 14:14:11,367 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2025-02-08 14:14:11,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 124 transitions, 1408 flow. Second operand has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 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 14:14:11,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:11,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2025-02-08 14:14:11,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:13,698 INFO L124 PetriNetUnfolderBase]: 2319/4956 cut-off events. [2025-02-08 14:14:13,698 INFO L125 PetriNetUnfolderBase]: For 72910/73251 co-relation queries the response was YES. [2025-02-08 14:14:13,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25804 conditions, 4956 events. 2319/4956 cut-off events. For 72910/73251 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 35656 event pairs, 805 based on Foata normal form. 44/4928 useless extension candidates. Maximal degree in co-relation 25742. Up to 2609 conditions per place. [2025-02-08 14:14:13,729 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 195 selfloop transitions, 47 changer transitions 10/272 dead transitions. [2025-02-08 14:14:13,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 272 transitions, 2868 flow [2025-02-08 14:14:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 14:14:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-02-08 14:14:13,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 479 transitions. [2025-02-08 14:14:13,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37539184952978055 [2025-02-08 14:14:13,732 INFO L175 Difference]: Start difference. First operand has 160 places, 124 transitions, 1408 flow. Second operand 29 states and 479 transitions. [2025-02-08 14:14:13,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 272 transitions, 2868 flow [2025-02-08 14:14:13,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 272 transitions, 2640 flow, removed 59 selfloop flow, removed 22 redundant places. [2025-02-08 14:14:13,880 INFO L231 Difference]: Finished difference. Result has 168 places, 137 transitions, 1591 flow [2025-02-08 14:14:13,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1591, PETRI_PLACES=168, PETRI_TRANSITIONS=137} [2025-02-08 14:14:13,881 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 125 predicate places. [2025-02-08 14:14:13,881 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 137 transitions, 1591 flow [2025-02-08 14:14:13,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 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 14:14:13,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:13,881 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:13,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 14:14:14,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:14,083 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:14:14,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2005032730, now seen corresponding path program 2 times [2025-02-08 14:14:14,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:14,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517411611] [2025-02-08 14:14:14,084 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:14,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:14,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 14:14:14,104 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 14:14:14,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:14,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:14:14,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:14,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517411611] [2025-02-08 14:14:14,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517411611] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:14,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930161607] [2025-02-08 14:14:14,266 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:14,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:14,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:14,268 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:14:14,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 14:14:14,325 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 14:14:14,349 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 14:14:14,349 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:14,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:14,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 14:14:14,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 14:14:14,593 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:14,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:14:14,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 52 [2025-02-08 14:14:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:14:14,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930161607] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:14,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:14,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 21 [2025-02-08 14:14:14,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742888191] [2025-02-08 14:14:14,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:14,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 14:14:14,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:14,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 14:14:14,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2025-02-08 14:14:14,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-02-08 14:14:14,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 137 transitions, 1591 flow. Second operand has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 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 14:14:14,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:14,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-02-08 14:14:14,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:16,901 INFO L124 PetriNetUnfolderBase]: 3541/7543 cut-off events. [2025-02-08 14:14:16,901 INFO L125 PetriNetUnfolderBase]: For 132722/133260 co-relation queries the response was YES. [2025-02-08 14:14:16,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39119 conditions, 7543 events. 3541/7543 cut-off events. For 132722/133260 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 57417 event pairs, 94 based on Foata normal form. 575/8106 useless extension candidates. Maximal degree in co-relation 39059. Up to 1139 conditions per place. [2025-02-08 14:14:16,955 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 341 selfloop transitions, 162 changer transitions 10/524 dead transitions. [2025-02-08 14:14:16,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 524 transitions, 7073 flow [2025-02-08 14:14:16,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-02-08 14:14:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2025-02-08 14:14:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 718 transitions. [2025-02-08 14:14:16,958 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4184149184149184 [2025-02-08 14:14:16,958 INFO L175 Difference]: Start difference. First operand has 168 places, 137 transitions, 1591 flow. Second operand 39 states and 718 transitions. [2025-02-08 14:14:16,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 524 transitions, 7073 flow [2025-02-08 14:14:17,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 524 transitions, 6886 flow, removed 73 selfloop flow, removed 12 redundant places. [2025-02-08 14:14:17,113 INFO L231 Difference]: Finished difference. Result has 218 places, 262 transitions, 4722 flow [2025-02-08 14:14:17,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4722, PETRI_PLACES=218, PETRI_TRANSITIONS=262} [2025-02-08 14:14:17,114 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2025-02-08 14:14:17,114 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 262 transitions, 4722 flow [2025-02-08 14:14:17,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 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 14:14:17,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:17,114 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:17,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-08 14:14:17,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:17,315 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:14:17,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:17,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1225704343, now seen corresponding path program 3 times [2025-02-08 14:14:17,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:17,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650783885] [2025-02-08 14:14:17,316 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:14:17,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:17,321 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 4 equivalence classes. [2025-02-08 14:14:17,328 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 32 statements. [2025-02-08 14:14:17,329 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 14:14:17,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:14:17,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:17,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650783885] [2025-02-08 14:14:17,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650783885] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:17,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909702030] [2025-02-08 14:14:17,539 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:14:17,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:17,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:17,541 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:14:17,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 14:14:17,615 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 4 equivalence classes. [2025-02-08 14:14:17,637 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 32 statements. [2025-02-08 14:14:17,638 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 14:14:17,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:17,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 14:14:17,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:14:17,847 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:17,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:14:17,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 51 [2025-02-08 14:14:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:14:18,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909702030] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:18,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:18,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2025-02-08 14:14:18,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786358373] [2025-02-08 14:14:18,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:18,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 14:14:18,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:18,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 14:14:18,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2025-02-08 14:14:18,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2025-02-08 14:14:18,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 262 transitions, 4722 flow. Second operand has 20 states, 20 states have (on average 15.0) internal successors, (300), 20 states have internal predecessors, (300), 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 14:14:18,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:18,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2025-02-08 14:14:18,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:20,179 INFO L124 PetriNetUnfolderBase]: 3498/8186 cut-off events. [2025-02-08 14:14:20,179 INFO L125 PetriNetUnfolderBase]: For 197451/198398 co-relation queries the response was YES. [2025-02-08 14:14:20,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49521 conditions, 8186 events. 3498/8186 cut-off events. For 197451/198398 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 69322 event pairs, 175 based on Foata normal form. 458/8591 useless extension candidates. Maximal degree in co-relation 49432. Up to 2733 conditions per place. [2025-02-08 14:14:20,289 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 280 selfloop transitions, 219 changer transitions 6/527 dead transitions. [2025-02-08 14:14:20,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 527 transitions, 10090 flow [2025-02-08 14:14:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 14:14:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 14:14:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 424 transitions. [2025-02-08 14:14:20,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4588744588744589 [2025-02-08 14:14:20,291 INFO L175 Difference]: Start difference. First operand has 218 places, 262 transitions, 4722 flow. Second operand 21 states and 424 transitions. [2025-02-08 14:14:20,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 527 transitions, 10090 flow [2025-02-08 14:14:20,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 527 transitions, 7271 flow, removed 1374 selfloop flow, removed 7 redundant places. [2025-02-08 14:14:20,946 INFO L231 Difference]: Finished difference. Result has 240 places, 367 transitions, 5840 flow [2025-02-08 14:14:20,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5840, PETRI_PLACES=240, PETRI_TRANSITIONS=367} [2025-02-08 14:14:20,946 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 197 predicate places. [2025-02-08 14:14:20,946 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 367 transitions, 5840 flow [2025-02-08 14:14:20,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 15.0) internal successors, (300), 20 states have internal predecessors, (300), 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 14:14:20,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:20,947 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:20,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-08 14:14:21,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:21,147 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:14:21,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:21,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1522503511, now seen corresponding path program 4 times [2025-02-08 14:14:21,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:21,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154873271] [2025-02-08 14:14:21,148 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:14:21,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:21,154 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-02-08 14:14:21,169 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 14:14:21,169 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:14:21,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:22,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:22,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154873271] [2025-02-08 14:14:22,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154873271] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:22,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210760876] [2025-02-08 14:14:22,171 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:14:22,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:22,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:22,173 INFO L229 MonitoredProcess]: Starting monitored process 18 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 14:14:22,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 14:14:22,232 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-02-08 14:14:22,253 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 14:14:22,253 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:14:22,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:22,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 14:14:22,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 14:14:22,542 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:22,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:14:22,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 51 [2025-02-08 14:14:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:14:22,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210760876] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:22,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:22,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 6] total 28 [2025-02-08 14:14:22,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311802368] [2025-02-08 14:14:22,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:22,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-08 14:14:22,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:22,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-08 14:14:22,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2025-02-08 14:14:23,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2025-02-08 14:14:23,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 367 transitions, 5840 flow. Second operand has 30 states, 30 states have (on average 12.833333333333334) internal successors, (385), 30 states have internal predecessors, (385), 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 14:14:23,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:23,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2025-02-08 14:14:23,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:25,482 INFO L124 PetriNetUnfolderBase]: 4017/9385 cut-off events. [2025-02-08 14:14:25,482 INFO L125 PetriNetUnfolderBase]: For 173491/174396 co-relation queries the response was YES. [2025-02-08 14:14:25,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53173 conditions, 9385 events. 4017/9385 cut-off events. For 173491/174396 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 80580 event pairs, 187 based on Foata normal form. 344/9657 useless extension candidates. Maximal degree in co-relation 53077. Up to 2617 conditions per place. [2025-02-08 14:14:25,563 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 463 selfloop transitions, 169 changer transitions 12/666 dead transitions. [2025-02-08 14:14:25,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 666 transitions, 10197 flow [2025-02-08 14:14:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 14:14:25,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-02-08 14:14:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 576 transitions. [2025-02-08 14:14:25,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2025-02-08 14:14:25,565 INFO L175 Difference]: Start difference. First operand has 240 places, 367 transitions, 5840 flow. Second operand 33 states and 576 transitions. [2025-02-08 14:14:25,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 666 transitions, 10197 flow [2025-02-08 14:14:26,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 666 transitions, 9516 flow, removed 320 selfloop flow, removed 7 redundant places. [2025-02-08 14:14:26,523 INFO L231 Difference]: Finished difference. Result has 269 places, 400 transitions, 6407 flow [2025-02-08 14:14:26,523 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5390, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6407, PETRI_PLACES=269, PETRI_TRANSITIONS=400} [2025-02-08 14:14:26,524 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2025-02-08 14:14:26,524 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 400 transitions, 6407 flow [2025-02-08 14:14:26,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 12.833333333333334) internal successors, (385), 30 states have internal predecessors, (385), 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 14:14:26,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:26,524 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:26,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-08 14:14:26,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:26,725 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:14:26,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash -242915843, now seen corresponding path program 1 times [2025-02-08 14:14:26,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:26,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414438109] [2025-02-08 14:14:26,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:26,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:26,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 14:14:26,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 14:14:26,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:26,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:26,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:26,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414438109] [2025-02-08 14:14:26,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414438109] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:26,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681752905] [2025-02-08 14:14:26,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:26,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:26,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:26,954 INFO L229 MonitoredProcess]: Starting monitored process 19 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 14:14:26,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 14:14:27,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 14:14:27,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 14:14:27,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:27,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:27,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:14:27,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 14:14:27,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:14:27,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681752905] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:27,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:14:27,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2025-02-08 14:14:27,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314573877] [2025-02-08 14:14:27,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:27,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:27,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:27,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:27,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-02-08 14:14:27,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-08 14:14:27,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 400 transitions, 6407 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 14:14:27,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:27,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-08 14:14:27,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:28,831 INFO L124 PetriNetUnfolderBase]: 3726/9267 cut-off events. [2025-02-08 14:14:28,831 INFO L125 PetriNetUnfolderBase]: For 167164/168145 co-relation queries the response was YES. [2025-02-08 14:14:28,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54613 conditions, 9267 events. 3726/9267 cut-off events. For 167164/168145 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 83166 event pairs, 531 based on Foata normal form. 375/9490 useless extension candidates. Maximal degree in co-relation 54514. Up to 3219 conditions per place. [2025-02-08 14:14:28,939 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 272 selfloop transitions, 168 changer transitions 20/488 dead transitions. [2025-02-08 14:14:28,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 488 transitions, 8593 flow [2025-02-08 14:14:28,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:14:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:14:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2025-02-08 14:14:28,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6227272727272727 [2025-02-08 14:14:28,940 INFO L175 Difference]: Start difference. First operand has 269 places, 400 transitions, 6407 flow. Second operand 5 states and 137 transitions. [2025-02-08 14:14:28,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 488 transitions, 8593 flow [2025-02-08 14:14:29,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 488 transitions, 8260 flow, removed 117 selfloop flow, removed 19 redundant places. [2025-02-08 14:14:30,005 INFO L231 Difference]: Finished difference. Result has 254 places, 399 transitions, 6828 flow [2025-02-08 14:14:30,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6198, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6828, PETRI_PLACES=254, PETRI_TRANSITIONS=399} [2025-02-08 14:14:30,006 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2025-02-08 14:14:30,006 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 399 transitions, 6828 flow [2025-02-08 14:14:30,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 14:14:30,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:30,006 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:14:30,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-08 14:14:30,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-08 14:14:30,207 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:14:30,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:30,207 INFO L85 PathProgramCache]: Analyzing trace with hash -390640214, now seen corresponding path program 2 times [2025-02-08 14:14:30,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:30,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488748842] [2025-02-08 14:14:30,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:30,214 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-08 14:14:30,223 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 14:14:30,226 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:30,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-08 14:14:30,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:30,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488748842] [2025-02-08 14:14:30,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488748842] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:30,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474007598] [2025-02-08 14:14:30,281 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:30,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:30,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:30,284 INFO L229 MonitoredProcess]: Starting monitored process 20 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 14:14:30,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 14:14:30,344 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-08 14:14:30,365 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 14:14:30,365 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:30,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:30,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:14:30,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:30,487 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-08 14:14:30,487 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-08 14:14:30,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474007598] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:30,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:30,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-08 14:14:30,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619711968] [2025-02-08 14:14:30,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:30,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:30,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:30,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:30,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:14:30,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-02-08 14:14:30,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 399 transitions, 6828 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:30,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:30,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-02-08 14:14:30,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:33,570 INFO L124 PetriNetUnfolderBase]: 5173/11192 cut-off events. [2025-02-08 14:14:33,571 INFO L125 PetriNetUnfolderBase]: For 207009/208060 co-relation queries the response was YES. [2025-02-08 14:14:33,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68196 conditions, 11192 events. 5173/11192 cut-off events. For 207009/208060 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 94831 event pairs, 1317 based on Foata normal form. 398/11456 useless extension candidates. Maximal degree in co-relation 68097. Up to 4510 conditions per place. [2025-02-08 14:14:33,734 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 600 selfloop transitions, 13 changer transitions 3/637 dead transitions. [2025-02-08 14:14:33,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 637 transitions, 12586 flow [2025-02-08 14:14:33,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:14:33,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:14:33,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2025-02-08 14:14:33,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2025-02-08 14:14:33,735 INFO L175 Difference]: Start difference. First operand has 254 places, 399 transitions, 6828 flow. Second operand 5 states and 97 transitions. [2025-02-08 14:14:33,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 637 transitions, 12586 flow [2025-02-08 14:14:34,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 637 transitions, 12357 flow, removed 47 selfloop flow, removed 7 redundant places. [2025-02-08 14:14:34,957 INFO L231 Difference]: Finished difference. Result has 246 places, 398 transitions, 6717 flow [2025-02-08 14:14:34,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6681, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6717, PETRI_PLACES=246, PETRI_TRANSITIONS=398} [2025-02-08 14:14:34,958 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 203 predicate places. [2025-02-08 14:14:34,958 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 398 transitions, 6717 flow [2025-02-08 14:14:34,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:34,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:34,958 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:34,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 14:14:35,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:35,163 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:14:35,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:35,164 INFO L85 PathProgramCache]: Analyzing trace with hash 747654193, now seen corresponding path program 3 times [2025-02-08 14:14:35,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:35,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005213516] [2025-02-08 14:14:35,164 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:14:35,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:35,178 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 3 equivalence classes. [2025-02-08 14:14:35,198 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 14:14:35,198 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 14:14:35,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 14:14:35,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:35,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005213516] [2025-02-08 14:14:35,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005213516] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:35,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828550630] [2025-02-08 14:14:35,473 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:14:35,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:35,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:35,476 INFO L229 MonitoredProcess]: Starting monitored process 21 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 14:14:35,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 14:14:35,532 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 3 equivalence classes. [2025-02-08 14:14:35,572 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 14:14:35,573 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 14:14:35,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:35,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 14:14:35,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 14:14:35,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 14:14:36,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828550630] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:36,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:36,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2025-02-08 14:14:36,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588211842] [2025-02-08 14:14:36,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:36,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-08 14:14:36,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:36,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-08 14:14:36,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2025-02-08 14:14:36,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-08 14:14:36,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 398 transitions, 6717 flow. Second operand has 29 states, 29 states have (on average 15.827586206896552) internal successors, (459), 29 states have internal predecessors, (459), 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 14:14:36,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:36,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-08 14:14:36,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:38,046 INFO L124 PetriNetUnfolderBase]: 3097/7165 cut-off events. [2025-02-08 14:14:38,046 INFO L125 PetriNetUnfolderBase]: For 122715/123358 co-relation queries the response was YES. [2025-02-08 14:14:38,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43189 conditions, 7165 events. 3097/7165 cut-off events. For 122715/123358 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 58909 event pairs, 1627 based on Foata normal form. 214/7193 useless extension candidates. Maximal degree in co-relation 43102. Up to 4804 conditions per place. [2025-02-08 14:14:38,126 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 310 selfloop transitions, 10 changer transitions 52/393 dead transitions. [2025-02-08 14:14:38,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 393 transitions, 6792 flow [2025-02-08 14:14:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 14:14:38,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-08 14:14:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 267 transitions. [2025-02-08 14:14:38,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43344155844155846 [2025-02-08 14:14:38,127 INFO L175 Difference]: Start difference. First operand has 246 places, 398 transitions, 6717 flow. Second operand 14 states and 267 transitions. [2025-02-08 14:14:38,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 393 transitions, 6792 flow [2025-02-08 14:14:38,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 393 transitions, 6633 flow, removed 52 selfloop flow, removed 9 redundant places. [2025-02-08 14:14:38,961 INFO L231 Difference]: Finished difference. Result has 233 places, 341 transitions, 5517 flow [2025-02-08 14:14:38,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5752, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5517, PETRI_PLACES=233, PETRI_TRANSITIONS=341} [2025-02-08 14:14:38,962 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 190 predicate places. [2025-02-08 14:14:38,962 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 341 transitions, 5517 flow [2025-02-08 14:14:38,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 15.827586206896552) internal successors, (459), 29 states have internal predecessors, (459), 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 14:14:38,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:38,963 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:38,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-08 14:14:39,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-08 14:14:39,163 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:14:39,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:39,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1370049308, now seen corresponding path program 4 times [2025-02-08 14:14:39,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:39,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128653824] [2025-02-08 14:14:39,164 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:14:39,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:39,170 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-02-08 14:14:39,188 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 14:14:39,189 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:14:39,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:39,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:39,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128653824] [2025-02-08 14:14:39,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128653824] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:39,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195616294] [2025-02-08 14:14:39,782 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:14:39,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:39,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:39,784 INFO L229 MonitoredProcess]: Starting monitored process 22 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 14:14:39,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 14:14:39,839 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-02-08 14:14:39,866 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 14:14:39,866 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:14:39,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:39,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 14:14:39,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:40,575 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 14:14:40,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-08 14:14:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:40,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:40,825 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-02-08 14:14:40,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2025-02-08 14:14:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:41,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195616294] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:41,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:41,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2025-02-08 14:14:41,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390150781] [2025-02-08 14:14:41,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:41,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-02-08 14:14:41,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:41,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-02-08 14:14:41,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2245, Unknown=0, NotChecked=0, Total=2450 [2025-02-08 14:14:42,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-02-08 14:14:42,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 341 transitions, 5517 flow. Second operand has 50 states, 50 states have (on average 11.56) internal successors, (578), 50 states have internal predecessors, (578), 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 14:14:42,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:42,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-02-08 14:14:42,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:55,291 INFO L124 PetriNetUnfolderBase]: 9597/19792 cut-off events. [2025-02-08 14:14:55,291 INFO L125 PetriNetUnfolderBase]: For 468479/469130 co-relation queries the response was YES. [2025-02-08 14:14:55,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120533 conditions, 19792 events. 9597/19792 cut-off events. For 468479/469130 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 171257 event pairs, 1317 based on Foata normal form. 796/20531 useless extension candidates. Maximal degree in co-relation 120452. Up to 3395 conditions per place. [2025-02-08 14:14:55,711 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 698 selfloop transitions, 562 changer transitions 92/1363 dead transitions. [2025-02-08 14:14:55,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 1363 transitions, 21945 flow [2025-02-08 14:14:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2025-02-08 14:14:55,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2025-02-08 14:14:55,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 1584 transitions. [2025-02-08 14:14:55,720 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4 [2025-02-08 14:14:55,721 INFO L175 Difference]: Start difference. First operand has 233 places, 341 transitions, 5517 flow. Second operand 90 states and 1584 transitions. [2025-02-08 14:14:55,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 1363 transitions, 21945 flow [2025-02-08 14:14:57,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1363 transitions, 20946 flow, removed 416 selfloop flow, removed 20 redundant places. [2025-02-08 14:14:57,884 INFO L231 Difference]: Finished difference. Result has 310 places, 815 transitions, 14896 flow [2025-02-08 14:14:57,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4911, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=14896, PETRI_PLACES=310, PETRI_TRANSITIONS=815} [2025-02-08 14:14:57,885 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 267 predicate places. [2025-02-08 14:14:57,886 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 815 transitions, 14896 flow [2025-02-08 14:14:57,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 11.56) internal successors, (578), 50 states have internal predecessors, (578), 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 14:14:57,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:57,886 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:57,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 14:14:58,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-08 14:14:58,087 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-08 14:14:58,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:58,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1779962940, now seen corresponding path program 2 times [2025-02-08 14:14:58,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:58,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176433555] [2025-02-08 14:14:58,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:58,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:58,100 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 2 equivalence classes. [2025-02-08 14:14:58,108 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 14:14:58,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:58,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:14:58,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:58,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176433555] [2025-02-08 14:14:58,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176433555] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:58,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764418789] [2025-02-08 14:14:58,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:58,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:58,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:58,393 INFO L229 MonitoredProcess]: Starting monitored process 23 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 14:14:58,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 14:14:58,449 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 2 equivalence classes. [2025-02-08 14:14:58,469 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 14:14:58,470 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:14:58,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:58,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-08 14:14:58,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:58,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1