./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-word-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc 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/chl-word-symm.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:49:43,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:49:43,793 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:49:43,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:49:43,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:49:43,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:49:43,825 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:49:43,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:49:43,826 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:49:43,826 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:49:43,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:49:43,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:49:43,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:49:43,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:49:43,828 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:49:43,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:49:43,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:49:43,829 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:49:43,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:49:43,829 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:49:43,829 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:49:43,829 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:49:43,829 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:49:43,829 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:49:43,829 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:49:43,829 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:49:43,829 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:49:43,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:49:43,830 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:49:43,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:49:43,830 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:49:43,831 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:49:43,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:49:43,831 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 -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2025-02-06 18:49:44,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:49:44,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:49:44,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:49:44,154 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:49:44,154 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:49:44,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2025-02-06 18:49:45,460 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/70dde6844/67c380f6e35c4eb18591204bf4578a65/FLAG93adef5e0 [2025-02-06 18:49:45,709 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:49:45,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2025-02-06 18:49:45,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/70dde6844/67c380f6e35c4eb18591204bf4578a65/FLAG93adef5e0 [2025-02-06 18:49:45,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/70dde6844/67c380f6e35c4eb18591204bf4578a65 [2025-02-06 18:49:45,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:49:45,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:49:45,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:49:45,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:49:45,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:49:45,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:49:45" (1/1) ... [2025-02-06 18:49:45,756 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 06.02 06:49:45, skipping insertion in model container [2025-02-06 18:49:45,758 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:49:45" (1/1) ... [2025-02-06 18:49:45,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:49:45,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:49:45,975 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:49:46,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:49:46,025 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:49:46,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46 WrapperNode [2025-02-06 18:49:46,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:49:46,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:49:46,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:49:46,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:49:46,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (1/1) ... [2025-02-06 18:49:46,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (1/1) ... [2025-02-06 18:49:46,063 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 123 [2025-02-06 18:49:46,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:49:46,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:49:46,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:49:46,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:49:46,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (1/1) ... [2025-02-06 18:49:46,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (1/1) ... [2025-02-06 18:49:46,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (1/1) ... [2025-02-06 18:49:46,101 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-06 18:49:46,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (1/1) ... [2025-02-06 18:49:46,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (1/1) ... [2025-02-06 18:49:46,116 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (1/1) ... [2025-02-06 18:49:46,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (1/1) ... [2025-02-06 18:49:46,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (1/1) ... [2025-02-06 18:49:46,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (1/1) ... [2025-02-06 18:49:46,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:49:46,128 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:49:46,128 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:49:46,128 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:49:46,129 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (1/1) ... [2025-02-06 18:49:46,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:49:46,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:46,155 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) [2025-02-06 18:49:46,157 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 [2025-02-06 18:49:46,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:49:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:49:46,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:49:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:49:46,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:49:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:49:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:49:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:49:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:49:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:49:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:49:46,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:49:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:49:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:49:46,180 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:49:46,267 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:49:46,269 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:49:46,616 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:49:46,616 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:49:46,849 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:49:46,849 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:49:46,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:49:46 BoogieIcfgContainer [2025-02-06 18:49:46,851 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:49:46,854 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:49:46,855 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:49:46,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:49:46,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:49:45" (1/3) ... [2025-02-06 18:49:46,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4661cd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:49:46, skipping insertion in model container [2025-02-06 18:49:46,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:46" (2/3) ... [2025-02-06 18:49:46,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4661cd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:49:46, skipping insertion in model container [2025-02-06 18:49:46,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:49:46" (3/3) ... [2025-02-06 18:49:46,863 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2025-02-06 18:49:46,882 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:49:46,883 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-word-symm.wvr.c that has 3 procedures, 51 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2025-02-06 18:49:46,884 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:49:46,974 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:49:47,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 60 transitions, 134 flow [2025-02-06 18:49:47,038 INFO L124 PetriNetUnfolderBase]: 10/58 cut-off events. [2025-02-06 18:49:47,042 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:49:47,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 58 events. 10/58 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2025-02-06 18:49:47,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 60 transitions, 134 flow [2025-02-06 18:49:47,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 56 transitions, 121 flow [2025-02-06 18:49:47,061 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:49:47,073 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;@6e10d4da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:49:47,073 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-02-06 18:49:47,076 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:49:47,077 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:49:47,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:49:47,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:47,078 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:49:47,078 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:47,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:47,085 INFO L85 PathProgramCache]: Analyzing trace with hash 500698, now seen corresponding path program 1 times [2025-02-06 18:49:47,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:47,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553760289] [2025-02-06 18:49:47,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:47,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:47,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:49:47,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:49:47,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:47,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:47,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:47,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553760289] [2025-02-06 18:49:47,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553760289] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:47,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:47,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:49:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484714977] [2025-02-06 18:49:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:47,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:49:47,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:47,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:49:47,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:49:47,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2025-02-06 18:49:47,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 56 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:47,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:47,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2025-02-06 18:49:47,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:47,677 INFO L124 PetriNetUnfolderBase]: 291/673 cut-off events. [2025-02-06 18:49:47,677 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-02-06 18:49:47,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 673 events. 291/673 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3756 event pairs, 157 based on Foata normal form. 2/493 useless extension candidates. Maximal degree in co-relation 1021. Up to 410 conditions per place. [2025-02-06 18:49:47,686 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 33 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2025-02-06 18:49:47,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 213 flow [2025-02-06 18:49:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:49:47,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:49:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2025-02-06 18:49:47,705 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-02-06 18:49:47,707 INFO L175 Difference]: Start difference. First operand has 53 places, 56 transitions, 121 flow. Second operand 4 states and 140 transitions. [2025-02-06 18:49:47,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 213 flow [2025-02-06 18:49:47,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 208 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:49:47,719 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 176 flow [2025-02-06 18:49:47,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2025-02-06 18:49:47,726 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2025-02-06 18:49:47,727 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 176 flow [2025-02-06 18:49:47,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:47,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:47,728 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:49:47,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:49:47,729 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:47,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:47,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2031821814, now seen corresponding path program 1 times [2025-02-06 18:49:47,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:47,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541219162] [2025-02-06 18:49:47,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:47,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:47,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:49:47,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:49:47,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:47,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:47,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:47,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541219162] [2025-02-06 18:49:47,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541219162] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:47,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632479988] [2025-02-06 18:49:47,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:47,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:47,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:47,883 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) [2025-02-06 18:49:47,885 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 [2025-02-06 18:49:47,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:49:47,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:49:47,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:47,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:47,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:49:47,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:48,011 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:49:48,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632479988] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:48,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:49:48,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:49:48,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695379407] [2025-02-06 18:49:48,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:48,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:49:48,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:48,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:49:48,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:49:48,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2025-02-06 18:49:48,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:48,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:48,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2025-02-06 18:49:48,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:48,254 INFO L124 PetriNetUnfolderBase]: 291/671 cut-off events. [2025-02-06 18:49:48,255 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-02-06 18:49:48,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 671 events. 291/671 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3736 event pairs, 157 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 1075. Up to 400 conditions per place. [2025-02-06 18:49:48,260 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 26 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2025-02-06 18:49:48,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 244 flow [2025-02-06 18:49:48,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:49:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:49:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2025-02-06 18:49:48,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2025-02-06 18:49:48,262 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 176 flow. Second operand 6 states and 184 transitions. [2025-02-06 18:49:48,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 244 flow [2025-02-06 18:49:48,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 244 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:49:48,264 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 192 flow [2025-02-06 18:49:48,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2025-02-06 18:49:48,265 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2025-02-06 18:49:48,265 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 192 flow [2025-02-06 18:49:48,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:48,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:48,266 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:49:48,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:49:48,470 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 [2025-02-06 18:49:48,470 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:48,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:48,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1438032776, now seen corresponding path program 1 times [2025-02-06 18:49:48,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:48,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719700985] [2025-02-06 18:49:48,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:48,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:48,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:49:48,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:49:48,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:48,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:48,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719700985] [2025-02-06 18:49:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719700985] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530060026] [2025-02-06 18:49:48,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:48,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:48,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:48,590 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) [2025-02-06 18:49:48,592 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 [2025-02-06 18:49:48,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:49:48,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:49:48,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:48,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:48,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:49:48,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:48,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:49:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:48,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530060026] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:49:48,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:49:48,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 18:49:48,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637712922] [2025-02-06 18:49:48,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:49:48,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:49:48,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:48,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:49:48,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:49:48,737 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2025-02-06 18:49:48,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 192 flow. Second operand has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:48,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:48,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2025-02-06 18:49:48,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:48,960 INFO L124 PetriNetUnfolderBase]: 297/695 cut-off events. [2025-02-06 18:49:48,961 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2025-02-06 18:49:48,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 695 events. 297/695 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3959 event pairs, 157 based on Foata normal form. 6/521 useless extension candidates. Maximal degree in co-relation 1077. Up to 411 conditions per place. [2025-02-06 18:49:48,967 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 31 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2025-02-06 18:49:48,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 418 flow [2025-02-06 18:49:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:49:48,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:49:48,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 302 transitions. [2025-02-06 18:49:48,971 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5033333333333333 [2025-02-06 18:49:48,972 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 192 flow. Second operand 10 states and 302 transitions. [2025-02-06 18:49:48,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 418 flow [2025-02-06 18:49:48,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 360 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-06 18:49:48,979 INFO L231 Difference]: Finished difference. Result has 66 places, 78 transitions, 332 flow [2025-02-06 18:49:48,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=332, PETRI_PLACES=66, PETRI_TRANSITIONS=78} [2025-02-06 18:49:48,980 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2025-02-06 18:49:48,980 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 78 transitions, 332 flow [2025-02-06 18:49:48,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:48,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:48,981 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:48,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 18:49:49,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:49,184 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:49,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:49,185 INFO L85 PathProgramCache]: Analyzing trace with hash -912270853, now seen corresponding path program 1 times [2025-02-06 18:49:49,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:49,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955043216] [2025-02-06 18:49:49,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:49,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:49,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:49:49,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:49:49,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:49,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:49,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955043216] [2025-02-06 18:49:49,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955043216] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:49,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:49,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:49:49,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516585799] [2025-02-06 18:49:49,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:49,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:49:49,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:49,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:49:49,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:49:49,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2025-02-06 18:49:49,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 78 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:49,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:49,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2025-02-06 18:49:49,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:49,503 INFO L124 PetriNetUnfolderBase]: 513/1003 cut-off events. [2025-02-06 18:49:49,504 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2025-02-06 18:49:49,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 1003 events. 513/1003 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5124 event pairs, 233 based on Foata normal form. 18/806 useless extension candidates. Maximal degree in co-relation 1814. Up to 597 conditions per place. [2025-02-06 18:49:49,513 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 82 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2025-02-06 18:49:49,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 107 transitions, 566 flow [2025-02-06 18:49:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:49:49,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:49:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2025-02-06 18:49:49,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2025-02-06 18:49:49,515 INFO L175 Difference]: Start difference. First operand has 66 places, 78 transitions, 332 flow. Second operand 4 states and 164 transitions. [2025-02-06 18:49:49,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 107 transitions, 566 flow [2025-02-06 18:49:49,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 107 transitions, 542 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-06 18:49:49,521 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 337 flow [2025-02-06 18:49:49,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2025-02-06 18:49:49,522 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2025-02-06 18:49:49,522 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 337 flow [2025-02-06 18:49:49,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:49,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:49,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:49,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:49:49,523 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:49,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:49,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1784343332, now seen corresponding path program 1 times [2025-02-06 18:49:49,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:49,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242942959] [2025-02-06 18:49:49,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:49,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:49,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:49:49,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:49:49,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:49,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:49,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:49,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242942959] [2025-02-06 18:49:49,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242942959] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:49,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:49,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:49:49,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999562503] [2025-02-06 18:49:49,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:49,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:49:49,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:49,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:49:49,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:49:49,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2025-02-06 18:49:49,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 337 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:49,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:49,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2025-02-06 18:49:49,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:50,084 INFO L124 PetriNetUnfolderBase]: 1170/2280 cut-off events. [2025-02-06 18:49:50,084 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2025-02-06 18:49:50,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4406 conditions, 2280 events. 1170/2280 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14186 event pairs, 586 based on Foata normal form. 26/1847 useless extension candidates. Maximal degree in co-relation 4339. Up to 812 conditions per place. [2025-02-06 18:49:50,102 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 77 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2025-02-06 18:49:50,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 108 transitions, 583 flow [2025-02-06 18:49:50,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:49:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:49:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2025-02-06 18:49:50,104 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2025-02-06 18:49:50,104 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 337 flow. Second operand 5 states and 184 transitions. [2025-02-06 18:49:50,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 108 transitions, 583 flow [2025-02-06 18:49:50,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 108 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:49:50,111 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 373 flow [2025-02-06 18:49:50,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=373, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2025-02-06 18:49:50,112 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2025-02-06 18:49:50,112 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 373 flow [2025-02-06 18:49:50,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:50,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:50,112 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:50,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:49:50,112 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:50,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:50,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1045678684, now seen corresponding path program 1 times [2025-02-06 18:49:50,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:50,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229808025] [2025-02-06 18:49:50,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:50,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:50,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:49:50,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:49:50,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:50,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:50,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:50,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229808025] [2025-02-06 18:49:50,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229808025] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:50,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:50,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:49:50,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911062145] [2025-02-06 18:49:50,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:50,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:49:50,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:50,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:49:50,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:49:50,193 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2025-02-06 18:49:50,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:50,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:50,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2025-02-06 18:49:50,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:50,517 INFO L124 PetriNetUnfolderBase]: 1521/2801 cut-off events. [2025-02-06 18:49:50,518 INFO L125 PetriNetUnfolderBase]: For 471/515 co-relation queries the response was YES. [2025-02-06 18:49:50,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5668 conditions, 2801 events. 1521/2801 cut-off events. For 471/515 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 16511 event pairs, 686 based on Foata normal form. 50/2501 useless extension candidates. Maximal degree in co-relation 5599. Up to 1646 conditions per place. [2025-02-06 18:49:50,540 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 86 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2025-02-06 18:49:50,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 114 transitions, 641 flow [2025-02-06 18:49:50,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:49:50,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:49:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2025-02-06 18:49:50,543 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2025-02-06 18:49:50,543 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 373 flow. Second operand 4 states and 162 transitions. [2025-02-06 18:49:50,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 114 transitions, 641 flow [2025-02-06 18:49:50,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 114 transitions, 635 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:49:50,551 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 396 flow [2025-02-06 18:49:50,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2025-02-06 18:49:50,553 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2025-02-06 18:49:50,553 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 396 flow [2025-02-06 18:49:50,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:50,553 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:50,554 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:50,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:49:50,554 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:50,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash -519931075, now seen corresponding path program 1 times [2025-02-06 18:49:50,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:50,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943354415] [2025-02-06 18:49:50,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:50,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:50,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:49:50,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:49:50,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:50,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:50,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:50,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943354415] [2025-02-06 18:49:50,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943354415] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:50,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:50,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:49:50,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104895249] [2025-02-06 18:49:50,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:50,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:49:50,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:50,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:49:50,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:49:50,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2025-02-06 18:49:50,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:50,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:50,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2025-02-06 18:49:50,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:51,184 INFO L124 PetriNetUnfolderBase]: 2916/5586 cut-off events. [2025-02-06 18:49:51,184 INFO L125 PetriNetUnfolderBase]: For 2286/2294 co-relation queries the response was YES. [2025-02-06 18:49:51,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12234 conditions, 5586 events. 2916/5586 cut-off events. For 2286/2294 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 39371 event pairs, 1502 based on Foata normal form. 130/5303 useless extension candidates. Maximal degree in co-relation 12134. Up to 1930 conditions per place. [2025-02-06 18:49:51,235 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 103 selfloop transitions, 5 changer transitions 0/130 dead transitions. [2025-02-06 18:49:51,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 130 transitions, 803 flow [2025-02-06 18:49:51,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:49:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:49:51,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2025-02-06 18:49:51,240 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2025-02-06 18:49:51,240 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 396 flow. Second operand 4 states and 163 transitions. [2025-02-06 18:49:51,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 130 transitions, 803 flow [2025-02-06 18:49:51,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 130 transitions, 798 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:49:51,251 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 430 flow [2025-02-06 18:49:51,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2025-02-06 18:49:51,255 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2025-02-06 18:49:51,255 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 430 flow [2025-02-06 18:49:51,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:51,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:51,255 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:51,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:49:51,256 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:51,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:51,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1906617430, now seen corresponding path program 1 times [2025-02-06 18:49:51,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:51,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073712139] [2025-02-06 18:49:51,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:51,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:51,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:49:51,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:49:51,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:51,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:51,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:51,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:51,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073712139] [2025-02-06 18:49:51,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073712139] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:51,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752523463] [2025-02-06 18:49:51,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:51,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:51,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:51,439 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) [2025-02-06 18:49:51,442 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 [2025-02-06 18:49:51,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:49:51,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:49:51,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:51,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:51,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:49:51,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:49:51,577 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:49:51,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752523463] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:51,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:49:51,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-02-06 18:49:51,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002990986] [2025-02-06 18:49:51,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:51,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:49:51,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:51,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:49:51,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:49:51,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2025-02-06 18:49:51,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:51,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:51,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2025-02-06 18:49:51,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:51,993 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([528] L77-2-->thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (< (+ v_~n2~0_14 2147483648) v_~n1~0_14) InVars {~n2~0=v_~n2~0_14, ~n1~0=v_~n1~0_14} OutVars{~n2~0=v_~n2~0_14, ~n1~0=v_~n1~0_14} AuxVars[] AssignedVars[][72], [Black: 157#(= thread1Thread1of1ForFork1_~i~0 0), Black: 160#(and (= |thread1Thread1of1ForFork1_#t~post5| 0) (= thread1Thread1of1ForFork1_~i~0 0)), Black: 65#(and (= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 0) (= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0)), 14#thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 163#true, 52#thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 167#(<= ~n2~0 ~n1~0), Black: 172#(= thread2Thread1of1ForFork0_~i~1 0), Black: 175#(and (= |thread2Thread1of1ForFork0_#t~post10| 0) (= thread2Thread1of1ForFork0_~i~1 0)), 194#(and (<= 0 ~n1~0) (<= ~n2~0 2147483647)), Black: 181#(<= ~n1~0 ~n2~0), 96#true, Black: 147#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1)), Black: 149#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 2147483645) (<= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 2147483645)), Black: 151#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 2147483646) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 2147483646)), 11#L98-1true, 58#true, 178#true]) [2025-02-06 18:49:51,994 INFO L294 olderBase$Statistics]: this new event has 28 ancestors and is cut-off event [2025-02-06 18:49:51,994 INFO L297 olderBase$Statistics]: existing Event has 24 ancestors and is cut-off event [2025-02-06 18:49:51,994 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2025-02-06 18:49:51,994 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2025-02-06 18:49:51,995 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([512] L57-->thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (< (+ 2147483647 v_~n2~0_3) v_~n1~0_3) InVars {~n2~0=v_~n2~0_3, ~n1~0=v_~n1~0_3} OutVars{~n2~0=v_~n2~0_3, ~n1~0=v_~n1~0_3} AuxVars[] AssignedVars[][66], [Black: 157#(= thread1Thread1of1ForFork1_~i~0 0), Black: 160#(and (= |thread1Thread1of1ForFork1_#t~post5| 0) (= thread1Thread1of1ForFork1_~i~0 0)), Black: 65#(and (= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 0) (= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0)), 14#thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 163#true, 52#thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 167#(<= ~n2~0 ~n1~0), Black: 172#(= thread2Thread1of1ForFork0_~i~1 0), Black: 175#(and (= |thread2Thread1of1ForFork0_#t~post10| 0) (= thread2Thread1of1ForFork0_~i~1 0)), 194#(and (<= 0 ~n1~0) (<= ~n2~0 2147483647)), Black: 181#(<= ~n1~0 ~n2~0), 96#true, Black: 147#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1)), Black: 149#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 2147483645) (<= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 2147483645)), Black: 151#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 2147483646) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 2147483646)), 11#L98-1true, 58#true, 178#true]) [2025-02-06 18:49:51,995 INFO L294 olderBase$Statistics]: this new event has 28 ancestors and is cut-off event [2025-02-06 18:49:51,995 INFO L297 olderBase$Statistics]: existing Event has 24 ancestors and is cut-off event [2025-02-06 18:49:51,995 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2025-02-06 18:49:51,995 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2025-02-06 18:49:52,009 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([528] L77-2-->thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (< (+ v_~n2~0_14 2147483648) v_~n1~0_14) InVars {~n2~0=v_~n2~0_14, ~n1~0=v_~n1~0_14} OutVars{~n2~0=v_~n2~0_14, ~n1~0=v_~n1~0_14} AuxVars[] AssignedVars[][72], [Black: 157#(= thread1Thread1of1ForFork1_~i~0 0), Black: 160#(and (= |thread1Thread1of1ForFork1_#t~post5| 0) (= thread1Thread1of1ForFork1_~i~0 0)), Black: 65#(and (= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 0) (= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0)), 14#thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 163#true, 52#thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 167#(<= ~n2~0 ~n1~0), Black: 172#(= thread2Thread1of1ForFork0_~i~1 0), Black: 175#(and (= |thread2Thread1of1ForFork0_#t~post10| 0) (= thread2Thread1of1ForFork0_~i~1 0)), 34#L99true, 194#(and (<= 0 ~n1~0) (<= ~n2~0 2147483647)), Black: 181#(<= ~n1~0 ~n2~0), 96#true, Black: 147#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1)), Black: 149#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 2147483645) (<= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 2147483645)), Black: 151#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 2147483646) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 2147483646)), 58#true, 178#true]) [2025-02-06 18:49:52,010 INFO L294 olderBase$Statistics]: this new event has 29 ancestors and is cut-off event [2025-02-06 18:49:52,010 INFO L297 olderBase$Statistics]: existing Event has 24 ancestors and is cut-off event [2025-02-06 18:49:52,010 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2025-02-06 18:49:52,010 INFO L297 olderBase$Statistics]: existing Event has 25 ancestors and is cut-off event [2025-02-06 18:49:52,010 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([512] L57-->thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (< (+ 2147483647 v_~n2~0_3) v_~n1~0_3) InVars {~n2~0=v_~n2~0_3, ~n1~0=v_~n1~0_3} OutVars{~n2~0=v_~n2~0_3, ~n1~0=v_~n1~0_3} AuxVars[] AssignedVars[][66], [Black: 157#(= thread1Thread1of1ForFork1_~i~0 0), Black: 160#(and (= |thread1Thread1of1ForFork1_#t~post5| 0) (= thread1Thread1of1ForFork1_~i~0 0)), Black: 65#(and (= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 0) (= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0)), 14#thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 163#true, 52#thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 167#(<= ~n2~0 ~n1~0), Black: 172#(= thread2Thread1of1ForFork0_~i~1 0), Black: 175#(and (= |thread2Thread1of1ForFork0_#t~post10| 0) (= thread2Thread1of1ForFork0_~i~1 0)), 34#L99true, 194#(and (<= 0 ~n1~0) (<= ~n2~0 2147483647)), Black: 181#(<= ~n1~0 ~n2~0), 96#true, Black: 147#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1)), Black: 149#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 2147483645) (<= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 2147483645)), Black: 151#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post23#1| 2147483646) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 2147483646)), 58#true, 178#true]) [2025-02-06 18:49:52,011 INFO L294 olderBase$Statistics]: this new event has 29 ancestors and is cut-off event [2025-02-06 18:49:52,013 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2025-02-06 18:49:52,013 INFO L297 olderBase$Statistics]: existing Event has 25 ancestors and is cut-off event [2025-02-06 18:49:52,013 INFO L297 olderBase$Statistics]: existing Event has 24 ancestors and is cut-off event [2025-02-06 18:49:52,041 INFO L124 PetriNetUnfolderBase]: 2497/5046 cut-off events. [2025-02-06 18:49:52,041 INFO L125 PetriNetUnfolderBase]: For 2121/2135 co-relation queries the response was YES. [2025-02-06 18:49:52,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10605 conditions, 5046 events. 2497/5046 cut-off events. For 2121/2135 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 36546 event pairs, 1374 based on Foata normal form. 134/4858 useless extension candidates. Maximal degree in co-relation 10504. Up to 3298 conditions per place. [2025-02-06 18:49:52,082 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 57 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2025-02-06 18:49:52,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 518 flow [2025-02-06 18:49:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:49:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:49:52,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2025-02-06 18:49:52,084 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-02-06 18:49:52,084 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 430 flow. Second operand 3 states and 110 transitions. [2025-02-06 18:49:52,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 518 flow [2025-02-06 18:49:52,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 501 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 18:49:52,090 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 387 flow [2025-02-06 18:49:52,090 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2025-02-06 18:49:52,090 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2025-02-06 18:49:52,091 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 387 flow [2025-02-06 18:49:52,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:52,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:52,091 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:52,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 18:49:52,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:52,291 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:52,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash -490853773, now seen corresponding path program 1 times [2025-02-06 18:49:52,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:52,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759411991] [2025-02-06 18:49:52,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:52,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:52,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:49:52,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:49:52,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:52,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:49:52,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:52,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759411991] [2025-02-06 18:49:52,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759411991] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:52,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:52,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:49:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617428938] [2025-02-06 18:49:52,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:52,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:49:52,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:52,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:49:52,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:49:52,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 60 [2025-02-06 18:49:52,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:52,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:52,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 60 [2025-02-06 18:49:52,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:52,751 INFO L124 PetriNetUnfolderBase]: 1898/3774 cut-off events. [2025-02-06 18:49:52,751 INFO L125 PetriNetUnfolderBase]: For 1023/1031 co-relation queries the response was YES. [2025-02-06 18:49:52,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8166 conditions, 3774 events. 1898/3774 cut-off events. For 1023/1031 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 25171 event pairs, 1024 based on Foata normal form. 52/3685 useless extension candidates. Maximal degree in co-relation 8146. Up to 1823 conditions per place. [2025-02-06 18:49:52,778 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 106 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2025-02-06 18:49:52,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 135 transitions, 811 flow [2025-02-06 18:49:52,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:49:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:49:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2025-02-06 18:49:52,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2025-02-06 18:49:52,780 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 387 flow. Second operand 5 states and 205 transitions. [2025-02-06 18:49:52,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 135 transitions, 811 flow [2025-02-06 18:49:52,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 135 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:49:52,786 INFO L231 Difference]: Finished difference. Result has 83 places, 86 transitions, 415 flow [2025-02-06 18:49:52,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=83, PETRI_TRANSITIONS=86} [2025-02-06 18:49:52,787 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 30 predicate places. [2025-02-06 18:49:52,787 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 86 transitions, 415 flow [2025-02-06 18:49:52,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:52,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:52,787 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:52,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:49:52,787 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:52,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:52,788 INFO L85 PathProgramCache]: Analyzing trace with hash 101850969, now seen corresponding path program 1 times [2025-02-06 18:49:52,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:52,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905988140] [2025-02-06 18:49:52,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:52,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:52,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:49:52,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:49:52,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:52,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:52,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:52,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905988140] [2025-02-06 18:49:52,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905988140] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:52,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609196648] [2025-02-06 18:49:52,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:52,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:52,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:52,917 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) [2025-02-06 18:49:52,919 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 [2025-02-06 18:49:52,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:49:52,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:49:52,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:52,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:52,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:49:52,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:49:53,074 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:49:53,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609196648] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:53,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:49:53,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2025-02-06 18:49:53,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4296161] [2025-02-06 18:49:53,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:53,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:49:53,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:53,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:49:53,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:49:53,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2025-02-06 18:49:53,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 86 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:53,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:53,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2025-02-06 18:49:53,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:53,361 INFO L124 PetriNetUnfolderBase]: 1690/3482 cut-off events. [2025-02-06 18:49:53,361 INFO L125 PetriNetUnfolderBase]: For 1679/1727 co-relation queries the response was YES. [2025-02-06 18:49:53,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7457 conditions, 3482 events. 1690/3482 cut-off events. For 1679/1727 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 23189 event pairs, 944 based on Foata normal form. 158/3415 useless extension candidates. Maximal degree in co-relation 7434. Up to 2287 conditions per place. [2025-02-06 18:49:53,387 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 53 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2025-02-06 18:49:53,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 507 flow [2025-02-06 18:49:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:49:53,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:49:53,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2025-02-06 18:49:53,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2025-02-06 18:49:53,389 INFO L175 Difference]: Start difference. First operand has 83 places, 86 transitions, 415 flow. Second operand 4 states and 136 transitions. [2025-02-06 18:49:53,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 507 flow [2025-02-06 18:49:53,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 497 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 18:49:53,394 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 391 flow [2025-02-06 18:49:53,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=391, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2025-02-06 18:49:53,395 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2025-02-06 18:49:53,395 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 391 flow [2025-02-06 18:49:53,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:53,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:53,395 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:53,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 18:49:53,595 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,SelfDestructingSolverStorable9 [2025-02-06 18:49:53,596 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:53,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:53,596 INFO L85 PathProgramCache]: Analyzing trace with hash 22670163, now seen corresponding path program 1 times [2025-02-06 18:49:53,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:53,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411322986] [2025-02-06 18:49:53,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:53,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:53,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:49:53,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:49:53,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:53,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:49:53,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411322986] [2025-02-06 18:49:53,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411322986] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:53,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:53,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:49:53,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974295978] [2025-02-06 18:49:53,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:53,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:49:53,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:53,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:49:53,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:49:53,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 60 [2025-02-06 18:49:53,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 391 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:53,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:53,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 60 [2025-02-06 18:49:53,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:53,998 INFO L124 PetriNetUnfolderBase]: 1536/3030 cut-off events. [2025-02-06 18:49:53,999 INFO L125 PetriNetUnfolderBase]: For 1109/1163 co-relation queries the response was YES. [2025-02-06 18:49:54,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6738 conditions, 3030 events. 1536/3030 cut-off events. For 1109/1163 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 18872 event pairs, 886 based on Foata normal form. 34/2898 useless extension candidates. Maximal degree in co-relation 6718. Up to 1833 conditions per place. [2025-02-06 18:49:54,021 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 67 selfloop transitions, 3 changer transitions 29/119 dead transitions. [2025-02-06 18:49:54,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 119 transitions, 740 flow [2025-02-06 18:49:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:49:54,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:49:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 196 transitions. [2025-02-06 18:49:54,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6533333333333333 [2025-02-06 18:49:54,023 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 391 flow. Second operand 5 states and 196 transitions. [2025-02-06 18:49:54,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 119 transitions, 740 flow [2025-02-06 18:49:54,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 733 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:49:54,030 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 381 flow [2025-02-06 18:49:54,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2025-02-06 18:49:54,031 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 30 predicate places. [2025-02-06 18:49:54,031 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 381 flow [2025-02-06 18:49:54,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:54,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:54,031 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-06 18:49:54,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:49:54,032 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:54,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1031529492, now seen corresponding path program 2 times [2025-02-06 18:49:54,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:54,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579721422] [2025-02-06 18:49:54,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:49:54,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:54,042 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:49:54,048 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:49:54,050 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:49:54,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:49:54,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:54,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579721422] [2025-02-06 18:49:54,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579721422] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:54,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308831215] [2025-02-06 18:49:54,082 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:49:54,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:54,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:54,084 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) [2025-02-06 18:49:54,086 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 [2025-02-06 18:49:54,135 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:49:54,143 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:49:54,143 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:49:54,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:54,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:49:54,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:49:54,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:49:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:49:54,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308831215] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:49:54,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:49:54,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-06 18:49:54,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437172382] [2025-02-06 18:49:54,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:49:54,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:49:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:54,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:49:54,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:49:54,210 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2025-02-06 18:49:54,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:54,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:54,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2025-02-06 18:49:54,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:54,428 INFO L124 PetriNetUnfolderBase]: 1298/2671 cut-off events. [2025-02-06 18:49:54,428 INFO L125 PetriNetUnfolderBase]: For 881/917 co-relation queries the response was YES. [2025-02-06 18:49:54,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5925 conditions, 2671 events. 1298/2671 cut-off events. For 881/917 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 16860 event pairs, 750 based on Foata normal form. 1/2529 useless extension candidates. Maximal degree in co-relation 5903. Up to 1802 conditions per place. [2025-02-06 18:49:54,448 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 43 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2025-02-06 18:49:54,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 489 flow [2025-02-06 18:49:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:49:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:49:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2025-02-06 18:49:54,450 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-02-06 18:49:54,450 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 381 flow. Second operand 4 states and 128 transitions. [2025-02-06 18:49:54,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 489 flow [2025-02-06 18:49:54,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 79 transitions, 476 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-06 18:49:54,456 INFO L231 Difference]: Finished difference. Result has 79 places, 79 transitions, 390 flow [2025-02-06 18:49:54,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=79, PETRI_TRANSITIONS=79} [2025-02-06 18:49:54,457 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2025-02-06 18:49:54,458 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 79 transitions, 390 flow [2025-02-06 18:49:54,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:54,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:54,459 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:54,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 18:49:54,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 18:49:54,659 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:54,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:54,660 INFO L85 PathProgramCache]: Analyzing trace with hash 41236367, now seen corresponding path program 1 times [2025-02-06 18:49:54,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:54,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274935796] [2025-02-06 18:49:54,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:54,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:54,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:49:54,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:49:54,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:54,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:49:54,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274935796] [2025-02-06 18:49:54,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274935796] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:54,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:54,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:49:54,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606340896] [2025-02-06 18:49:54,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:54,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:49:54,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:54,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:49:54,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:49:54,767 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 60 [2025-02-06 18:49:54,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 79 transitions, 390 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:54,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:54,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 60 [2025-02-06 18:49:54,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:54,980 INFO L124 PetriNetUnfolderBase]: 1025/2084 cut-off events. [2025-02-06 18:49:54,980 INFO L125 PetriNetUnfolderBase]: For 662/664 co-relation queries the response was YES. [2025-02-06 18:49:54,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 2084 events. 1025/2084 cut-off events. For 662/664 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 12076 event pairs, 585 based on Foata normal form. 26/2029 useless extension candidates. Maximal degree in co-relation 4527. Up to 1004 conditions per place. [2025-02-06 18:49:54,993 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 83 selfloop transitions, 9 changer transitions 4/115 dead transitions. [2025-02-06 18:49:54,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 115 transitions, 694 flow [2025-02-06 18:49:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:49:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:49:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 202 transitions. [2025-02-06 18:49:54,995 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2025-02-06 18:49:54,995 INFO L175 Difference]: Start difference. First operand has 79 places, 79 transitions, 390 flow. Second operand 5 states and 202 transitions. [2025-02-06 18:49:54,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 115 transitions, 694 flow [2025-02-06 18:49:54,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 115 transitions, 662 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:49:55,000 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 397 flow [2025-02-06 18:49:55,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2025-02-06 18:49:55,022 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2025-02-06 18:49:55,022 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 397 flow [2025-02-06 18:49:55,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:55,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:55,023 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-02-06 18:49:55,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:49:55,023 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:55,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:55,023 INFO L85 PathProgramCache]: Analyzing trace with hash -564740933, now seen corresponding path program 1 times [2025-02-06 18:49:55,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:55,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919779673] [2025-02-06 18:49:55,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:55,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:55,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:49:55,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:49:55,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:55,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:55,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:55,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919779673] [2025-02-06 18:49:55,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919779673] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:55,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458727803] [2025-02-06 18:49:55,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:55,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:55,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:55,163 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) [2025-02-06 18:49:55,166 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 [2025-02-06 18:49:55,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:49:55,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:49:55,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:55,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:55,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 18:49:55,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:55,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:49:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:55,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458727803] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:49:55,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:49:55,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-06 18:49:55,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21993626] [2025-02-06 18:49:55,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:49:55,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 18:49:55,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:55,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 18:49:55,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-06 18:49:55,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2025-02-06 18:49:55,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 397 flow. Second operand has 24 states, 24 states have (on average 25.083333333333332) internal successors, (602), 24 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:55,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:55,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2025-02-06 18:49:55,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:55,876 INFO L124 PetriNetUnfolderBase]: 959/2044 cut-off events. [2025-02-06 18:49:55,876 INFO L125 PetriNetUnfolderBase]: For 1055/1075 co-relation queries the response was YES. [2025-02-06 18:49:55,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4586 conditions, 2044 events. 959/2044 cut-off events. For 1055/1075 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 12007 event pairs, 555 based on Foata normal form. 22/1944 useless extension candidates. Maximal degree in co-relation 4565. Up to 1329 conditions per place. [2025-02-06 18:49:55,888 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 35 selfloop transitions, 61 changer transitions 0/117 dead transitions. [2025-02-06 18:49:55,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 117 transitions, 841 flow [2025-02-06 18:49:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 18:49:55,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-06 18:49:55,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 625 transitions. [2025-02-06 18:49:55,892 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4734848484848485 [2025-02-06 18:49:55,892 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 397 flow. Second operand 22 states and 625 transitions. [2025-02-06 18:49:55,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 117 transitions, 841 flow [2025-02-06 18:49:55,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 117 transitions, 816 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:49:55,899 INFO L231 Difference]: Finished difference. Result has 107 places, 117 transitions, 792 flow [2025-02-06 18:49:55,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=792, PETRI_PLACES=107, PETRI_TRANSITIONS=117} [2025-02-06 18:49:55,901 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2025-02-06 18:49:55,901 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 117 transitions, 792 flow [2025-02-06 18:49:55,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 25.083333333333332) internal successors, (602), 24 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:55,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:55,901 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:55,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 18:49:56,105 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,SelfDestructingSolverStorable13 [2025-02-06 18:49:56,105 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:56,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:56,105 INFO L85 PathProgramCache]: Analyzing trace with hash 260186479, now seen corresponding path program 1 times [2025-02-06 18:49:56,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:56,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543686640] [2025-02-06 18:49:56,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:56,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:56,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:49:56,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:49:56,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:56,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:56,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:49:56,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:56,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543686640] [2025-02-06 18:49:56,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543686640] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:56,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:56,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:49:56,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491387722] [2025-02-06 18:49:56,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:56,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:49:56,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:56,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:49:56,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:49:56,231 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 60 [2025-02-06 18:49:56,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 117 transitions, 792 flow. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:56,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:56,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 60 [2025-02-06 18:49:56,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:56,425 INFO L124 PetriNetUnfolderBase]: 876/1825 cut-off events. [2025-02-06 18:49:56,426 INFO L125 PetriNetUnfolderBase]: For 1084/1100 co-relation queries the response was YES. [2025-02-06 18:49:56,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4335 conditions, 1825 events. 876/1825 cut-off events. For 1084/1100 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10030 event pairs, 516 based on Foata normal form. 13/1759 useless extension candidates. Maximal degree in co-relation 4307. Up to 1052 conditions per place. [2025-02-06 18:49:56,438 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 83 selfloop transitions, 12 changer transitions 25/139 dead transitions. [2025-02-06 18:49:56,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 139 transitions, 1093 flow [2025-02-06 18:49:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:49:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:49:56,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2025-02-06 18:49:56,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6433333333333333 [2025-02-06 18:49:56,439 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 792 flow. Second operand 5 states and 193 transitions. [2025-02-06 18:49:56,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 139 transitions, 1093 flow [2025-02-06 18:49:56,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 139 transitions, 937 flow, removed 47 selfloop flow, removed 9 redundant places. [2025-02-06 18:49:56,446 INFO L231 Difference]: Finished difference. Result has 104 places, 114 transitions, 640 flow [2025-02-06 18:49:56,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=640, PETRI_PLACES=104, PETRI_TRANSITIONS=114} [2025-02-06 18:49:56,447 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2025-02-06 18:49:56,447 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 114 transitions, 640 flow [2025-02-06 18:49:56,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:56,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:56,447 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:56,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 18:49:56,448 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:56,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:56,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1182396059, now seen corresponding path program 1 times [2025-02-06 18:49:56,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:56,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817797260] [2025-02-06 18:49:56,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:56,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:56,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:49:56,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:49:56,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:56,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:49:56,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:56,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817797260] [2025-02-06 18:49:56,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817797260] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:56,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486778926] [2025-02-06 18:49:56,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:56,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:56,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:56,533 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) [2025-02-06 18:49:56,535 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 [2025-02-06 18:49:56,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:49:56,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:49:56,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:56,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:56,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:49:56,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:49:56,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:49:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:49:56,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486778926] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:49:56,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:49:56,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-06 18:49:56,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909498700] [2025-02-06 18:49:56,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:49:56,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:49:56,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:56,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:49:56,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:49:57,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2025-02-06 18:49:57,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 114 transitions, 640 flow. Second operand has 19 states, 19 states have (on average 23.0) internal successors, (437), 19 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:57,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:57,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2025-02-06 18:49:57,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:58,030 INFO L124 PetriNetUnfolderBase]: 1222/2377 cut-off events. [2025-02-06 18:49:58,031 INFO L125 PetriNetUnfolderBase]: For 1390/1436 co-relation queries the response was YES. [2025-02-06 18:49:58,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5748 conditions, 2377 events. 1222/2377 cut-off events. For 1390/1436 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 13768 event pairs, 368 based on Foata normal form. 52/2335 useless extension candidates. Maximal degree in co-relation 5719. Up to 496 conditions per place. [2025-02-06 18:49:58,050 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 147 selfloop transitions, 67 changer transitions 10/240 dead transitions. [2025-02-06 18:49:58,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 240 transitions, 1522 flow [2025-02-06 18:49:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:49:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:49:58,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 448 transitions. [2025-02-06 18:49:58,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-02-06 18:49:58,054 INFO L175 Difference]: Start difference. First operand has 104 places, 114 transitions, 640 flow. Second operand 14 states and 448 transitions. [2025-02-06 18:49:58,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 240 transitions, 1522 flow [2025-02-06 18:49:58,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 240 transitions, 1446 flow, removed 26 selfloop flow, removed 6 redundant places. [2025-02-06 18:49:58,068 INFO L231 Difference]: Finished difference. Result has 106 places, 118 transitions, 762 flow [2025-02-06 18:49:58,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=762, PETRI_PLACES=106, PETRI_TRANSITIONS=118} [2025-02-06 18:49:58,068 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2025-02-06 18:49:58,068 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 118 transitions, 762 flow [2025-02-06 18:49:58,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.0) internal successors, (437), 19 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:58,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:58,069 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:58,079 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 [2025-02-06 18:49:58,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:58,270 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:49:58,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1170464197, now seen corresponding path program 1 times [2025-02-06 18:49:58,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:58,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137097019] [2025-02-06 18:49:58,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:58,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:58,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:49:58,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:49:58,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:58,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:49:58,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:58,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137097019] [2025-02-06 18:49:58,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137097019] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:58,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735967485] [2025-02-06 18:49:58,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:58,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:58,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:58,337 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) [2025-02-06 18:49:58,338 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 [2025-02-06 18:49:58,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:49:58,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:49:58,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:58,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:58,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:49:58,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:49:58,546 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:49:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:49:58,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735967485] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:49:58,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:49:58,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-06 18:49:58,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695226727] [2025-02-06 18:49:58,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:49:58,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:49:58,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:58,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:49:58,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:49:59,111 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2025-02-06 18:49:59,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 118 transitions, 762 flow. Second operand has 19 states, 19 states have (on average 23.210526315789473) internal successors, (441), 19 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:59,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:59,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2025-02-06 18:49:59,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:59,895 INFO L124 PetriNetUnfolderBase]: 1122/2189 cut-off events. [2025-02-06 18:49:59,895 INFO L125 PetriNetUnfolderBase]: For 1575/1587 co-relation queries the response was YES. [2025-02-06 18:49:59,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5337 conditions, 2189 events. 1122/2189 cut-off events. For 1575/1587 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 12346 event pairs, 350 based on Foata normal form. 44/2125 useless extension candidates. Maximal degree in co-relation 5311. Up to 515 conditions per place. [2025-02-06 18:49:59,905 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 89 selfloop transitions, 61 changer transitions 61/226 dead transitions. [2025-02-06 18:49:59,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 226 transitions, 1582 flow [2025-02-06 18:49:59,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:49:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:49:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 441 transitions. [2025-02-06 18:49:59,908 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2025-02-06 18:49:59,908 INFO L175 Difference]: Start difference. First operand has 106 places, 118 transitions, 762 flow. Second operand 14 states and 441 transitions. [2025-02-06 18:49:59,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 226 transitions, 1582 flow [2025-02-06 18:49:59,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 226 transitions, 1498 flow, removed 7 selfloop flow, removed 4 redundant places. [2025-02-06 18:49:59,917 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 815 flow [2025-02-06 18:49:59,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=815, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2025-02-06 18:49:59,918 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 62 predicate places. [2025-02-06 18:49:59,918 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 815 flow [2025-02-06 18:49:59,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.210526315789473) internal successors, (441), 19 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:59,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:59,919 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:59,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 18:50:00,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 18:50:00,120 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:50:00,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:00,121 INFO L85 PathProgramCache]: Analyzing trace with hash 603986928, now seen corresponding path program 1 times [2025-02-06 18:50:00,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:00,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607324875] [2025-02-06 18:50:00,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:00,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:00,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:50:00,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:50:00,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:00,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 18:50:00,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:00,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607324875] [2025-02-06 18:50:00,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607324875] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:00,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598460159] [2025-02-06 18:50:00,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:00,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:00,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:00,209 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) [2025-02-06 18:50:00,211 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 [2025-02-06 18:50:00,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:50:00,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:50:00,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:00,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:00,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:50:00,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:50:00,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:50:00,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598460159] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:00,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:00,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-02-06 18:50:00,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679607990] [2025-02-06 18:50:00,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:00,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:50:00,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:00,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:50:00,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:50:00,983 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2025-02-06 18:50:00,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 815 flow. Second operand has 19 states, 19 states have (on average 23.157894736842106) internal successors, (440), 19 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:00,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:00,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2025-02-06 18:50:00,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:01,724 INFO L124 PetriNetUnfolderBase]: 1398/2657 cut-off events. [2025-02-06 18:50:01,724 INFO L125 PetriNetUnfolderBase]: For 2330/2348 co-relation queries the response was YES. [2025-02-06 18:50:01,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 2657 events. 1398/2657 cut-off events. For 2330/2348 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14784 event pairs, 492 based on Foata normal form. 52/2633 useless extension candidates. Maximal degree in co-relation 6865. Up to 798 conditions per place. [2025-02-06 18:50:01,742 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 193 selfloop transitions, 61 changer transitions 10/279 dead transitions. [2025-02-06 18:50:01,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 279 transitions, 2200 flow [2025-02-06 18:50:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:50:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:50:01,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 525 transitions. [2025-02-06 18:50:01,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2025-02-06 18:50:01,745 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 815 flow. Second operand 17 states and 525 transitions. [2025-02-06 18:50:01,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 279 transitions, 2200 flow [2025-02-06 18:50:01,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 279 transitions, 2014 flow, removed 23 selfloop flow, removed 9 redundant places. [2025-02-06 18:50:01,761 INFO L231 Difference]: Finished difference. Result has 119 places, 144 transitions, 1287 flow [2025-02-06 18:50:01,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1287, PETRI_PLACES=119, PETRI_TRANSITIONS=144} [2025-02-06 18:50:01,762 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2025-02-06 18:50:01,762 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 144 transitions, 1287 flow [2025-02-06 18:50:01,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.157894736842106) internal successors, (440), 19 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:01,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:01,762 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:01,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 18:50:01,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 18:50:01,964 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:50:01,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash -25723357, now seen corresponding path program 1 times [2025-02-06 18:50:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:01,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022832071] [2025-02-06 18:50:01,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:01,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:01,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:50:01,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:50:01,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:01,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:02,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 18:50:02,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:02,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022832071] [2025-02-06 18:50:02,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022832071] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:02,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64522573] [2025-02-06 18:50:02,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:02,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:02,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:02,070 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) [2025-02-06 18:50:02,073 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 [2025-02-06 18:50:02,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:50:02,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:50:02,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:02,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:02,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:50:02,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:50:02,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:50:02,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64522573] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:02,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:02,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-02-06 18:50:02,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649537126] [2025-02-06 18:50:02,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:02,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:50:02,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:02,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:50:02,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:50:02,776 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2025-02-06 18:50:02,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 144 transitions, 1287 flow. Second operand has 19 states, 19 states have (on average 23.36842105263158) internal successors, (444), 19 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:02,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:02,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2025-02-06 18:50:02,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:03,291 INFO L124 PetriNetUnfolderBase]: 1566/2953 cut-off events. [2025-02-06 18:50:03,291 INFO L125 PetriNetUnfolderBase]: For 3329/3361 co-relation queries the response was YES. [2025-02-06 18:50:03,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7745 conditions, 2953 events. 1566/2953 cut-off events. For 3329/3361 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16066 event pairs, 567 based on Foata normal form. 52/2903 useless extension candidates. Maximal degree in co-relation 7714. Up to 1034 conditions per place. [2025-02-06 18:50:03,307 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 136 selfloop transitions, 56 changer transitions 69/277 dead transitions. [2025-02-06 18:50:03,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 277 transitions, 2393 flow [2025-02-06 18:50:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:50:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:50:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 518 transitions. [2025-02-06 18:50:03,309 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5078431372549019 [2025-02-06 18:50:03,309 INFO L175 Difference]: Start difference. First operand has 119 places, 144 transitions, 1287 flow. Second operand 17 states and 518 transitions. [2025-02-06 18:50:03,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 277 transitions, 2393 flow [2025-02-06 18:50:03,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 277 transitions, 2309 flow, removed 10 selfloop flow, removed 5 redundant places. [2025-02-06 18:50:03,327 INFO L231 Difference]: Finished difference. Result has 133 places, 142 transitions, 1359 flow [2025-02-06 18:50:03,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1359, PETRI_PLACES=133, PETRI_TRANSITIONS=142} [2025-02-06 18:50:03,328 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 80 predicate places. [2025-02-06 18:50:03,328 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 142 transitions, 1359 flow [2025-02-06 18:50:03,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.36842105263158) internal successors, (444), 19 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:03,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:03,328 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:03,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 18:50:03,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:03,529 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:50:03,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:03,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2055573652, now seen corresponding path program 2 times [2025-02-06 18:50:03,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:03,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433762154] [2025-02-06 18:50:03,530 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:03,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:03,538 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-06 18:50:03,544 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 30 statements. [2025-02-06 18:50:03,544 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:50:03,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:50:03,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:03,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433762154] [2025-02-06 18:50:03,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433762154] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:03,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511652971] [2025-02-06 18:50:03,583 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:03,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:03,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:03,586 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) [2025-02-06 18:50:03,589 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 [2025-02-06 18:50:03,646 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-06 18:50:03,660 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 30 statements. [2025-02-06 18:50:03,660 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:50:03,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:03,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:50:03,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:50:03,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:50:03,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511652971] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:03,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:03,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2025-02-06 18:50:03,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343383024] [2025-02-06 18:50:03,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:03,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:50:03,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:03,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:50:03,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:50:03,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2025-02-06 18:50:03,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 142 transitions, 1359 flow. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:03,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:03,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2025-02-06 18:50:03,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:04,026 INFO L124 PetriNetUnfolderBase]: 1261/2372 cut-off events. [2025-02-06 18:50:04,026 INFO L125 PetriNetUnfolderBase]: For 3690/3702 co-relation queries the response was YES. [2025-02-06 18:50:04,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6977 conditions, 2372 events. 1261/2372 cut-off events. For 3690/3702 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12131 event pairs, 358 based on Foata normal form. 34/2357 useless extension candidates. Maximal degree in co-relation 6943. Up to 1059 conditions per place. [2025-02-06 18:50:04,036 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 140 selfloop transitions, 12 changer transitions 7/176 dead transitions. [2025-02-06 18:50:04,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 176 transitions, 1841 flow [2025-02-06 18:50:04,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:50:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:50:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2025-02-06 18:50:04,037 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5433333333333333 [2025-02-06 18:50:04,037 INFO L175 Difference]: Start difference. First operand has 133 places, 142 transitions, 1359 flow. Second operand 5 states and 163 transitions. [2025-02-06 18:50:04,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 176 transitions, 1841 flow [2025-02-06 18:50:04,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 176 transitions, 1744 flow, removed 13 selfloop flow, removed 14 redundant places. [2025-02-06 18:50:04,052 INFO L231 Difference]: Finished difference. Result has 118 places, 143 transitions, 1339 flow [2025-02-06 18:50:04,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1339, PETRI_PLACES=118, PETRI_TRANSITIONS=143} [2025-02-06 18:50:04,053 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 65 predicate places. [2025-02-06 18:50:04,053 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 143 transitions, 1339 flow [2025-02-06 18:50:04,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:04,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:04,053 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:04,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 18:50:04,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:04,254 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:50:04,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:04,255 INFO L85 PathProgramCache]: Analyzing trace with hash 570983080, now seen corresponding path program 2 times [2025-02-06 18:50:04,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:04,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437941318] [2025-02-06 18:50:04,255 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:04,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:04,263 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-06 18:50:04,269 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 32 statements. [2025-02-06 18:50:04,269 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:50:04,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:50:04,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:04,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437941318] [2025-02-06 18:50:04,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437941318] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:04,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102767686] [2025-02-06 18:50:04,303 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:04,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:04,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:04,306 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) [2025-02-06 18:50:04,308 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 [2025-02-06 18:50:04,370 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-06 18:50:04,383 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 32 statements. [2025-02-06 18:50:04,384 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:50:04,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:04,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:50:04,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:50:04,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:50:04,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102767686] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:04,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:04,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2025-02-06 18:50:04,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568105682] [2025-02-06 18:50:04,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:04,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:50:04,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:04,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:50:04,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:50:04,499 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2025-02-06 18:50:04,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 143 transitions, 1339 flow. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:04,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:04,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2025-02-06 18:50:04,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:04,699 INFO L124 PetriNetUnfolderBase]: 1197/2244 cut-off events. [2025-02-06 18:50:04,699 INFO L125 PetriNetUnfolderBase]: For 4184/4206 co-relation queries the response was YES. [2025-02-06 18:50:04,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6871 conditions, 2244 events. 1197/2244 cut-off events. For 4184/4206 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 11318 event pairs, 331 based on Foata normal form. 55/2254 useless extension candidates. Maximal degree in co-relation 6839. Up to 994 conditions per place. [2025-02-06 18:50:04,707 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 80 selfloop transitions, 1 changer transitions 93/177 dead transitions. [2025-02-06 18:50:04,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 177 transitions, 1848 flow [2025-02-06 18:50:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:50:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:50:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-02-06 18:50:04,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-02-06 18:50:04,708 INFO L175 Difference]: Start difference. First operand has 118 places, 143 transitions, 1339 flow. Second operand 5 states and 160 transitions. [2025-02-06 18:50:04,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 177 transitions, 1848 flow [2025-02-06 18:50:04,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 177 transitions, 1825 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-06 18:50:04,720 INFO L231 Difference]: Finished difference. Result has 117 places, 84 transitions, 1045 flow [2025-02-06 18:50:04,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1045, PETRI_PLACES=117, PETRI_TRANSITIONS=84} [2025-02-06 18:50:04,721 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2025-02-06 18:50:04,721 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 84 transitions, 1045 flow [2025-02-06 18:50:04,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:04,721 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:04,722 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2025-02-06 18:50:04,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 18:50:04,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:04,922 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:50:04,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:04,923 INFO L85 PathProgramCache]: Analyzing trace with hash 918934651, now seen corresponding path program 2 times [2025-02-06 18:50:04,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:04,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019774421] [2025-02-06 18:50:04,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:04,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:04,935 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 18:50:04,941 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 35 statements. [2025-02-06 18:50:04,941 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:50:04,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:50:04,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:04,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019774421] [2025-02-06 18:50:04,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019774421] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:04,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604889059] [2025-02-06 18:50:04,983 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:04,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:04,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:04,986 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) [2025-02-06 18:50:04,987 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 [2025-02-06 18:50:05,047 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 18:50:05,059 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 35 statements. [2025-02-06 18:50:05,059 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:50:05,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:05,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:50:05,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:50:05,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:50:05,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604889059] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:05,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:05,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-06 18:50:05,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971071333] [2025-02-06 18:50:05,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:05,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:50:05,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:05,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:50:05,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:50:05,167 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2025-02-06 18:50:05,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 84 transitions, 1045 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:05,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:05,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2025-02-06 18:50:05,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:05,193 INFO L124 PetriNetUnfolderBase]: 12/144 cut-off events. [2025-02-06 18:50:05,193 INFO L125 PetriNetUnfolderBase]: For 731/731 co-relation queries the response was YES. [2025-02-06 18:50:05,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 144 events. 12/144 cut-off events. For 731/731 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 357 event pairs, 0 based on Foata normal form. 3/147 useless extension candidates. Maximal degree in co-relation 764. Up to 56 conditions per place. [2025-02-06 18:50:05,193 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2025-02-06 18:50:05,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 1185 flow [2025-02-06 18:50:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:05,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2025-02-06 18:50:05,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2025-02-06 18:50:05,195 INFO L175 Difference]: Start difference. First operand has 117 places, 84 transitions, 1045 flow. Second operand 4 states and 103 transitions. [2025-02-06 18:50:05,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 1185 flow [2025-02-06 18:50:05,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 1000 flow, removed 3 selfloop flow, removed 14 redundant places. [2025-02-06 18:50:05,199 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2025-02-06 18:50:05,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2025-02-06 18:50:05,200 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2025-02-06 18:50:05,200 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2025-02-06 18:50:05,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:05,202 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2025-02-06 18:50:05,203 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2025-02-06 18:50:05,203 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2025-02-06 18:50:05,203 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2025-02-06 18:50:05,203 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2025-02-06 18:50:05,203 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2025-02-06 18:50:05,203 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2025-02-06 18:50:05,203 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2025-02-06 18:50:05,203 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2025-02-06 18:50:05,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2025-02-06 18:50:05,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2025-02-06 18:50:05,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2025-02-06 18:50:05,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2025-02-06 18:50:05,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2025-02-06 18:50:05,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2025-02-06 18:50:05,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2025-02-06 18:50:05,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2025-02-06 18:50:05,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2025-02-06 18:50:05,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2025-02-06 18:50:05,205 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2025-02-06 18:50:05,205 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2025-02-06 18:50:05,205 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2025-02-06 18:50:05,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 18:50:05,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:05,409 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:05,413 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 18:50:05,413 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 18:50:05,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 06:50:05 BasicIcfg [2025-02-06 18:50:05,417 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 18:50:05,417 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 18:50:05,417 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 18:50:05,418 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 18:50:05,421 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:49:46" (3/4) ... [2025-02-06 18:50:05,423 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 18:50:05,425 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-06 18:50:05,425 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-06 18:50:05,430 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2025-02-06 18:50:05,431 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2025-02-06 18:50:05,431 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2025-02-06 18:50:05,431 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-06 18:50:05,505 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 18:50:05,506 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 18:50:05,506 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 18:50:05,507 INFO L158 Benchmark]: Toolchain (without parser) took 19757.24ms. Allocated memory was 142.6MB in the beginning and 377.5MB in the end (delta: 234.9MB). Free memory was 112.1MB in the beginning and 310.2MB in the end (delta: -198.1MB). Peak memory consumption was 255.9MB. Max. memory is 16.1GB. [2025-02-06 18:50:05,507 INFO L158 Benchmark]: CDTParser took 0.82ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:50:05,508 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.55ms. Allocated memory is still 142.6MB. Free memory was 112.1MB in the beginning and 99.7MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:50:05,508 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.31ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 98.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:50:05,509 INFO L158 Benchmark]: Boogie Preprocessor took 61.97ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 95.3MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:50:05,509 INFO L158 Benchmark]: IcfgBuilder took 723.29ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 46.9MB in the end (delta: 48.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-02-06 18:50:05,510 INFO L158 Benchmark]: TraceAbstraction took 18562.75ms. Allocated memory was 142.6MB in the beginning and 377.5MB in the end (delta: 234.9MB). Free memory was 46.4MB in the beginning and 94.9MB in the end (delta: -48.5MB). Peak memory consumption was 180.4MB. Max. memory is 16.1GB. [2025-02-06 18:50:05,510 INFO L158 Benchmark]: Witness Printer took 88.32ms. Allocated memory is still 377.5MB. Free memory was 94.9MB in the beginning and 310.2MB in the end (delta: -215.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:50:05,512 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.55ms. Allocated memory is still 142.6MB. Free memory was 112.1MB in the beginning and 99.7MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.31ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 98.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.97ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 95.3MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 723.29ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 46.9MB in the end (delta: 48.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 18562.75ms. Allocated memory was 142.6MB in the beginning and 377.5MB in the end (delta: 234.9MB). Free memory was 46.4MB in the beginning and 94.9MB in the end (delta: -48.5MB). Peak memory consumption was 180.4MB. Max. memory is 16.1GB. * Witness Printer took 88.32ms. Allocated memory is still 377.5MB. Free memory was 94.9MB in the beginning and 310.2MB in the end (delta: -215.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 85 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.4s, OverallIterations: 22, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2840 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2520 mSDsluCounter, 1893 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1769 mSDsCounter, 171 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9781 IncrementalHoareTripleChecker+Invalid, 9952 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 171 mSolverCounterUnsat, 124 mSDtfsCounter, 9781 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 610 GetRequests, 389 SyntacticMatches, 11 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1359occurred in iteration=19, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 622 NumberOfCodeBlocks, 458 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 802 ConstructedInterpolants, 0 QuantifiedInterpolants, 2601 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1728 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 45 InterpolantComputations, 12 PerfectInterpolantSequences, 683/928 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 18:50:05,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE