./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:52:50,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:52:50,950 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:52:50,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:52:50,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:52:50,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:52:50,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:52:50,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:52:50,980 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:52:50,980 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:52:50,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:52:50,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:52:50,981 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:52:50,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:52:50,981 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:52:50,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:52:50,982 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:52:50,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:50,983 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:50,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:52:50,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:52:50,983 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 -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2025-01-10 06:52:51,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:52:51,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:52:51,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:52:51,288 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:52:51,288 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:52:51,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2025-01-10 06:52:52,474 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3853d41f4/21cb9ec08d324393ba98ec956c9f04e1/FLAG7b5427332 [2025-01-10 06:52:52,768 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:52:52,769 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2025-01-10 06:52:52,778 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3853d41f4/21cb9ec08d324393ba98ec956c9f04e1/FLAG7b5427332 [2025-01-10 06:52:52,795 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3853d41f4/21cb9ec08d324393ba98ec956c9f04e1 [2025-01-10 06:52:52,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:52:52,799 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:52:52,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:52:52,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:52:52,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:52:52,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:52" (1/1) ... [2025-01-10 06:52:52,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79600425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:52, skipping insertion in model container [2025-01-10 06:52:52,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:52" (1/1) ... [2025-01-10 06:52:52,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:52:52,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:52:52,987 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:52:53,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:52:53,030 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:52:53,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53 WrapperNode [2025-01-10 06:52:53,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:52:53,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:52:53,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:52:53,034 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:52:53,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,067 INFO L138 Inliner]: procedures = 24, calls = 49, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 331 [2025-01-10 06:52:53,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:52:53,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:52:53,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:52:53,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:52:53,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,098 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 3 writes are split as follows [0, 3]. [2025-01-10 06:52:53,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,110 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,118 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:52:53,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:52:53,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:52:53,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:52:53,120 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (1/1) ... [2025-01-10 06:52:53,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:53,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:53,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 06:52:53,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 06:52:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:52:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:52:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:52:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:52:53,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:52:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 06:52:53,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 06:52:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:52:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:52:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:52:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:52:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 06:52:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 06:52:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:52:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:52:53,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:52:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:52:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:52:53,172 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:52:53,268 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:52:53,270 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:52:53,620 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:52:53,620 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:52:53,916 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:52:53,917 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-10 06:52:53,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:53 BoogieIcfgContainer [2025-01-10 06:52:53,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:52:53,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:52:53,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:52:53,923 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:52:53,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:52:52" (1/3) ... [2025-01-10 06:52:53,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3f0887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:53, skipping insertion in model container [2025-01-10 06:52:53,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:53" (2/3) ... [2025-01-10 06:52:53,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3f0887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:53, skipping insertion in model container [2025-01-10 06:52:53,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:53" (3/3) ... [2025-01-10 06:52:53,925 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2025-01-10 06:52:53,937 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:52:53,939 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-ring-nondet.wvr.c that has 4 procedures, 81 locations, 1 initial locations, 6 loop locations, and 32 error locations. [2025-01-10 06:52:53,939 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:52:54,020 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-10 06:52:54,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 90 transitions, 201 flow [2025-01-10 06:52:54,073 INFO L124 PetriNetUnfolderBase]: 10/87 cut-off events. [2025-01-10 06:52:54,075 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 06:52:54,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 10/87 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 325 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2025-01-10 06:52:54,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 90 transitions, 201 flow [2025-01-10 06:52:54,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 85 transitions, 185 flow [2025-01-10 06:52:54,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:52:54,098 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;@1c72bcd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:52:54,099 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2025-01-10 06:52:54,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:52:54,102 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:52:54,102 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:52:54,103 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:54,103 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:52:54,103 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:52:54,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:54,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1018486, now seen corresponding path program 1 times [2025-01-10 06:52:54,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:54,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079107886] [2025-01-10 06:52:54,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:54,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:54,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:52:54,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:52:54,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:54,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:54,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:54,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079107886] [2025-01-10 06:52:54,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079107886] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:54,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:52:54,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:52:54,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839077650] [2025-01-10 06:52:54,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:54,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:52:54,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:54,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:52:54,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:52:54,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 90 [2025-01-10 06:52:54,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 85 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:52:54,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:54,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 90 [2025-01-10 06:52:54,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:55,688 INFO L124 PetriNetUnfolderBase]: 8654/13764 cut-off events. [2025-01-10 06:52:55,688 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2025-01-10 06:52:55,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26110 conditions, 13764 events. 8654/13764 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 99358 event pairs, 7968 based on Foata normal form. 3/8201 useless extension candidates. Maximal degree in co-relation 25337. Up to 11870 conditions per place. [2025-01-10 06:52:55,807 INFO L140 encePairwiseOnDemand]: 66/90 looper letters, 57 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2025-01-10 06:52:55,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 321 flow [2025-01-10 06:52:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:52:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:52:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2025-01-10 06:52:55,818 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2025-01-10 06:52:55,819 INFO L175 Difference]: Start difference. First operand has 85 places, 85 transitions, 185 flow. Second operand 4 states and 169 transitions. [2025-01-10 06:52:55,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 321 flow [2025-01-10 06:52:55,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 312 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-10 06:52:55,839 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 248 flow [2025-01-10 06:52:55,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2025-01-10 06:52:55,845 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, -5 predicate places. [2025-01-10 06:52:55,845 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 248 flow [2025-01-10 06:52:55,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:52:55,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:55,845 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:52:55,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:52:55,846 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:52:55,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:55,846 INFO L85 PathProgramCache]: Analyzing trace with hash 277965762, now seen corresponding path program 1 times [2025-01-10 06:52:55,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:55,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069653460] [2025-01-10 06:52:55,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:55,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:52:55,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:52:55,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:55,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:55,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:55,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069653460] [2025-01-10 06:52:55,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069653460] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:52:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58538359] [2025-01-10 06:52:55,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:55,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:52:55,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:55,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:52:55,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 06:52:56,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:52:56,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:52:56,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:56,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:56,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:52:56,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:52:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:56,103 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:52:56,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58538359] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:56,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:52:56,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:52:56,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92843336] [2025-01-10 06:52:56,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:56,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:52:56,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:56,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:52:56,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:52:56,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 90 [2025-01-10 06:52:56,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:52:56,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:56,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 90 [2025-01-10 06:52:56,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:57,211 INFO L124 PetriNetUnfolderBase]: 8654/13761 cut-off events. [2025-01-10 06:52:57,212 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2025-01-10 06:52:57,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26009 conditions, 13761 events. 8654/13761 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 99413 event pairs, 7968 based on Foata normal form. 3/8203 useless extension candidates. Maximal degree in co-relation 25936. Up to 11855 conditions per place. [2025-01-10 06:52:57,316 INFO L140 encePairwiseOnDemand]: 77/90 looper letters, 47 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2025-01-10 06:52:57,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 364 flow [2025-01-10 06:52:57,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:52:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:52:57,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2025-01-10 06:52:57,322 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3685185185185185 [2025-01-10 06:52:57,323 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 248 flow. Second operand 6 states and 199 transitions. [2025-01-10 06:52:57,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 364 flow [2025-01-10 06:52:57,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:52:57,326 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 270 flow [2025-01-10 06:52:57,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2025-01-10 06:52:57,327 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places. [2025-01-10 06:52:57,327 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 270 flow [2025-01-10 06:52:57,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:52:57,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:57,327 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:52:57,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 06:52:57,532 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 [2025-01-10 06:52:57,532 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:52:57,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:57,533 INFO L85 PathProgramCache]: Analyzing trace with hash 27005059, now seen corresponding path program 1 times [2025-01-10 06:52:57,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:57,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964466869] [2025-01-10 06:52:57,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:57,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:52:57,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:52:57,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:57,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:57,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:57,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964466869] [2025-01-10 06:52:57,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964466869] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:52:57,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914731571] [2025-01-10 06:52:57,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:57,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:52:57,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:57,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:52:57,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 06:52:57,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:52:57,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:52:57,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:57,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:57,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:52:57,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:52:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:57,764 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:52:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:57,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914731571] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:52:57,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:52:57,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 06:52:57,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689993986] [2025-01-10 06:52:57,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:52:57,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:52:57,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:57,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:52:57,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:52:57,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 90 [2025-01-10 06:52:57,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 270 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:52:57,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:57,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 90 [2025-01-10 06:52:57,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:58,874 INFO L124 PetriNetUnfolderBase]: 8659/13793 cut-off events. [2025-01-10 06:52:58,874 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2025-01-10 06:52:58,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26141 conditions, 13793 events. 8659/13793 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 100067 event pairs, 7964 based on Foata normal form. 9/8241 useless extension candidates. Maximal degree in co-relation 25929. Up to 11866 conditions per place. [2025-01-10 06:52:58,941 INFO L140 encePairwiseOnDemand]: 77/90 looper letters, 54 selfloop transitions, 37 changer transitions 0/110 dead transitions. [2025-01-10 06:52:58,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 110 transitions, 626 flow [2025-01-10 06:52:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:52:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:52:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 320 transitions. [2025-01-10 06:52:58,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2025-01-10 06:52:58,946 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 270 flow. Second operand 10 states and 320 transitions. [2025-01-10 06:52:58,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 110 transitions, 626 flow [2025-01-10 06:52:58,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 110 transitions, 543 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-01-10 06:52:58,950 INFO L231 Difference]: Finished difference. Result has 89 places, 110 transitions, 485 flow [2025-01-10 06:52:58,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=485, PETRI_PLACES=89, PETRI_TRANSITIONS=110} [2025-01-10 06:52:58,951 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 4 predicate places. [2025-01-10 06:52:58,952 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 110 transitions, 485 flow [2025-01-10 06:52:58,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:52:58,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:58,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:52:58,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 06:52:59,157 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 [2025-01-10 06:52:59,157 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:52:59,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:59,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1285277696, now seen corresponding path program 1 times [2025-01-10 06:52:59,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:59,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429435420] [2025-01-10 06:52:59,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:59,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:59,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:52:59,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:52:59,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:59,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:59,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:59,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429435420] [2025-01-10 06:52:59,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429435420] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:59,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:52:59,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:52:59,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121613178] [2025-01-10 06:52:59,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:59,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:52:59,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:59,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:52:59,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:52:59,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2025-01-10 06:52:59,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 110 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:52:59,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:59,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2025-01-10 06:52:59,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:00,166 INFO L124 PetriNetUnfolderBase]: 8799/14092 cut-off events. [2025-01-10 06:53:00,166 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2025-01-10 06:53:00,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26797 conditions, 14092 events. 8799/14092 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 102162 event pairs, 8087 based on Foata normal form. 135/8628 useless extension candidates. Maximal degree in co-relation 26639. Up to 11892 conditions per place. [2025-01-10 06:53:00,240 INFO L140 encePairwiseOnDemand]: 78/90 looper letters, 124 selfloop transitions, 10 changer transitions 1/157 dead transitions. [2025-01-10 06:53:00,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 157 transitions, 1005 flow [2025-01-10 06:53:00,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2025-01-10 06:53:00,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5088888888888888 [2025-01-10 06:53:00,242 INFO L175 Difference]: Start difference. First operand has 89 places, 110 transitions, 485 flow. Second operand 5 states and 229 transitions. [2025-01-10 06:53:00,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 157 transitions, 1005 flow [2025-01-10 06:53:00,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 157 transitions, 945 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:00,245 INFO L231 Difference]: Finished difference. Result has 93 places, 117 transitions, 550 flow [2025-01-10 06:53:00,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=550, PETRI_PLACES=93, PETRI_TRANSITIONS=117} [2025-01-10 06:53:00,246 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2025-01-10 06:53:00,246 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 117 transitions, 550 flow [2025-01-10 06:53:00,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:00,246 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:00,246 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:00,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:53:00,247 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:00,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1066878516, now seen corresponding path program 1 times [2025-01-10 06:53:00,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:00,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480138870] [2025-01-10 06:53:00,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:00,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:00,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:53:00,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:53:00,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:00,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:00,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:00,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480138870] [2025-01-10 06:53:00,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480138870] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:00,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529885062] [2025-01-10 06:53:00,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:00,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:00,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:00,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:00,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 06:53:00,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:53:00,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:53:00,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:00,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:00,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:53:00,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:00,576 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:00,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529885062] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:00,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:00,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-01-10 06:53:00,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166388643] [2025-01-10 06:53:00,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:00,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:00,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:00,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:00,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:53:00,577 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2025-01-10 06:53:00,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 117 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:00,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:00,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2025-01-10 06:53:00,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:01,446 INFO L124 PetriNetUnfolderBase]: 7482/11858 cut-off events. [2025-01-10 06:53:01,447 INFO L125 PetriNetUnfolderBase]: For 892/892 co-relation queries the response was YES. [2025-01-10 06:53:01,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23345 conditions, 11858 events. 7482/11858 cut-off events. For 892/892 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 82627 event pairs, 6780 based on Foata normal form. 0/7322 useless extension candidates. Maximal degree in co-relation 23189. Up to 10248 conditions per place. [2025-01-10 06:53:01,527 INFO L140 encePairwiseOnDemand]: 87/90 looper letters, 92 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2025-01-10 06:53:01,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 115 transitions, 728 flow [2025-01-10 06:53:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2025-01-10 06:53:01,531 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2025-01-10 06:53:01,531 INFO L175 Difference]: Start difference. First operand has 93 places, 117 transitions, 550 flow. Second operand 3 states and 136 transitions. [2025-01-10 06:53:01,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 115 transitions, 728 flow [2025-01-10 06:53:01,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 115 transitions, 724 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:01,535 INFO L231 Difference]: Finished difference. Result has 92 places, 115 transitions, 540 flow [2025-01-10 06:53:01,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=92, PETRI_TRANSITIONS=115} [2025-01-10 06:53:01,536 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 7 predicate places. [2025-01-10 06:53:01,536 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 115 transitions, 540 flow [2025-01-10 06:53:01,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:01,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:01,536 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:01,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 06:53:01,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:01,741 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:01,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:01,741 INFO L85 PathProgramCache]: Analyzing trace with hash -192272419, now seen corresponding path program 1 times [2025-01-10 06:53:01,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:01,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684952951] [2025-01-10 06:53:01,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:01,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:01,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:53:01,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:53:01,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:01,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:01,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:01,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684952951] [2025-01-10 06:53:01,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684952951] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:01,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:01,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:53:01,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862481354] [2025-01-10 06:53:01,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:01,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:01,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:01,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:01,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:01,792 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2025-01-10 06:53:01,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 115 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:01,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:01,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2025-01-10 06:53:01,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:02,454 INFO L124 PetriNetUnfolderBase]: 6932/11016 cut-off events. [2025-01-10 06:53:02,454 INFO L125 PetriNetUnfolderBase]: For 1012/1012 co-relation queries the response was YES. [2025-01-10 06:53:02,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22258 conditions, 11016 events. 6932/11016 cut-off events. For 1012/1012 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 75402 event pairs, 2496 based on Foata normal form. 190/6854 useless extension candidates. Maximal degree in co-relation 22242. Up to 8085 conditions per place. [2025-01-10 06:53:02,507 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 115 selfloop transitions, 2 changer transitions 1/140 dead transitions. [2025-01-10 06:53:02,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 140 transitions, 835 flow [2025-01-10 06:53:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2025-01-10 06:53:02,508 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5962962962962963 [2025-01-10 06:53:02,508 INFO L175 Difference]: Start difference. First operand has 92 places, 115 transitions, 540 flow. Second operand 3 states and 161 transitions. [2025-01-10 06:53:02,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 140 transitions, 835 flow [2025-01-10 06:53:02,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 140 transitions, 834 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:02,512 INFO L231 Difference]: Finished difference. Result has 94 places, 115 transitions, 544 flow [2025-01-10 06:53:02,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=544, PETRI_PLACES=94, PETRI_TRANSITIONS=115} [2025-01-10 06:53:02,513 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2025-01-10 06:53:02,513 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 115 transitions, 544 flow [2025-01-10 06:53:02,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:02,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:02,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:02,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:53:02,514 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:02,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1230690102, now seen corresponding path program 1 times [2025-01-10 06:53:02,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:02,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055048336] [2025-01-10 06:53:02,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:02,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:02,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:53:02,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:53:02,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:02,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:02,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:02,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055048336] [2025-01-10 06:53:02,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055048336] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:02,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:02,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:53:02,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6006638] [2025-01-10 06:53:02,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:02,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:02,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:02,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:02,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:02,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2025-01-10 06:53:02,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 115 transitions, 544 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:02,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:02,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2025-01-10 06:53:02,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:03,158 INFO L124 PetriNetUnfolderBase]: 6575/10596 cut-off events. [2025-01-10 06:53:03,159 INFO L125 PetriNetUnfolderBase]: For 1422/1446 co-relation queries the response was YES. [2025-01-10 06:53:03,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22025 conditions, 10596 events. 6575/10596 cut-off events. For 1422/1446 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 69994 event pairs, 3214 based on Foata normal form. 66/6943 useless extension candidates. Maximal degree in co-relation 22007. Up to 8691 conditions per place. [2025-01-10 06:53:03,189 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 108 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2025-01-10 06:53:03,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 135 transitions, 817 flow [2025-01-10 06:53:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:03,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2025-01-10 06:53:03,191 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2025-01-10 06:53:03,191 INFO L175 Difference]: Start difference. First operand has 94 places, 115 transitions, 544 flow. Second operand 3 states and 155 transitions. [2025-01-10 06:53:03,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 135 transitions, 817 flow [2025-01-10 06:53:03,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 135 transitions, 815 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:03,195 INFO L231 Difference]: Finished difference. Result has 96 places, 119 transitions, 577 flow [2025-01-10 06:53:03,195 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=577, PETRI_PLACES=96, PETRI_TRANSITIONS=119} [2025-01-10 06:53:03,195 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2025-01-10 06:53:03,195 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 119 transitions, 577 flow [2025-01-10 06:53:03,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:03,196 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:03,196 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:03,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 06:53:03,196 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:03,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:03,196 INFO L85 PathProgramCache]: Analyzing trace with hash 621891642, now seen corresponding path program 1 times [2025-01-10 06:53:03,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:03,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905172119] [2025-01-10 06:53:03,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:03,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:03,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 06:53:03,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 06:53:03,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:03,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:03,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:03,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905172119] [2025-01-10 06:53:03,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905172119] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:03,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101984643] [2025-01-10 06:53:03,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:03,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:03,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:03,303 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:03,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 06:53:03,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 06:53:03,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 06:53:03,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:03,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:03,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:53:03,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:03,416 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:03,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101984643] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:03,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:03,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2025-01-10 06:53:03,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039753068] [2025-01-10 06:53:03,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:03,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:03,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:03,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:03,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-01-10 06:53:03,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2025-01-10 06:53:03,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 119 transitions, 577 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:03,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:03,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2025-01-10 06:53:03,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:03,995 INFO L124 PetriNetUnfolderBase]: 5926/10056 cut-off events. [2025-01-10 06:53:03,995 INFO L125 PetriNetUnfolderBase]: For 3122/3122 co-relation queries the response was YES. [2025-01-10 06:53:04,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22071 conditions, 10056 events. 5926/10056 cut-off events. For 3122/3122 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 68123 event pairs, 1572 based on Foata normal form. 206/7306 useless extension candidates. Maximal degree in co-relation 22051. Up to 4462 conditions per place. [2025-01-10 06:53:04,044 INFO L140 encePairwiseOnDemand]: 81/90 looper letters, 106 selfloop transitions, 15 changer transitions 0/143 dead transitions. [2025-01-10 06:53:04,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 143 transitions, 893 flow [2025-01-10 06:53:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2025-01-10 06:53:04,045 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2025-01-10 06:53:04,046 INFO L175 Difference]: Start difference. First operand has 96 places, 119 transitions, 577 flow. Second operand 4 states and 186 transitions. [2025-01-10 06:53:04,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 143 transitions, 893 flow [2025-01-10 06:53:04,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 143 transitions, 887 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:04,051 INFO L231 Difference]: Finished difference. Result has 98 places, 120 transitions, 649 flow [2025-01-10 06:53:04,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=649, PETRI_PLACES=98, PETRI_TRANSITIONS=120} [2025-01-10 06:53:04,051 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 13 predicate places. [2025-01-10 06:53:04,051 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 120 transitions, 649 flow [2025-01-10 06:53:04,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:04,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:04,052 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:04,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:04,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-10 06:53:04,256 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:04,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash 621891643, now seen corresponding path program 1 times [2025-01-10 06:53:04,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:04,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436613473] [2025-01-10 06:53:04,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:04,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:04,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 06:53:04,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 06:53:04,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:04,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:04,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:04,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436613473] [2025-01-10 06:53:04,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436613473] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:04,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:04,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:53:04,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466018777] [2025-01-10 06:53:04,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:04,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:04,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:04,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:04,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:04,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2025-01-10 06:53:04,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 120 transitions, 649 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:04,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:04,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2025-01-10 06:53:04,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:05,006 INFO L124 PetriNetUnfolderBase]: 7501/12047 cut-off events. [2025-01-10 06:53:05,007 INFO L125 PetriNetUnfolderBase]: For 10452/10466 co-relation queries the response was YES. [2025-01-10 06:53:05,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30117 conditions, 12047 events. 7501/12047 cut-off events. For 10452/10466 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 81984 event pairs, 5480 based on Foata normal form. 0/8541 useless extension candidates. Maximal degree in co-relation 30094. Up to 8706 conditions per place. [2025-01-10 06:53:05,071 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 128 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2025-01-10 06:53:05,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 152 transitions, 988 flow [2025-01-10 06:53:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2025-01-10 06:53:05,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2025-01-10 06:53:05,072 INFO L175 Difference]: Start difference. First operand has 98 places, 120 transitions, 649 flow. Second operand 3 states and 168 transitions. [2025-01-10 06:53:05,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 152 transitions, 988 flow [2025-01-10 06:53:05,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 987 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:05,081 INFO L231 Difference]: Finished difference. Result has 99 places, 118 transitions, 636 flow [2025-01-10 06:53:05,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=636, PETRI_PLACES=99, PETRI_TRANSITIONS=118} [2025-01-10 06:53:05,081 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 14 predicate places. [2025-01-10 06:53:05,081 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 118 transitions, 636 flow [2025-01-10 06:53:05,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:05,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:05,082 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:05,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-10 06:53:05,082 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:05,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:05,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2098773851, now seen corresponding path program 1 times [2025-01-10 06:53:05,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:05,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856241624] [2025-01-10 06:53:05,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:05,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:05,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:53:05,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:53:05,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:05,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:05,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:05,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:05,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856241624] [2025-01-10 06:53:05,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856241624] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:05,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:05,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:53:05,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949678038] [2025-01-10 06:53:05,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:05,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:05,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:05,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:05,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:05,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2025-01-10 06:53:05,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 118 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:05,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:05,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2025-01-10 06:53:05,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:06,126 INFO L124 PetriNetUnfolderBase]: 10135/16238 cut-off events. [2025-01-10 06:53:06,126 INFO L125 PetriNetUnfolderBase]: For 14658/14886 co-relation queries the response was YES. [2025-01-10 06:53:06,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41753 conditions, 16238 events. 10135/16238 cut-off events. For 14658/14886 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 112927 event pairs, 8127 based on Foata normal form. 276/11935 useless extension candidates. Maximal degree in co-relation 41730. Up to 10293 conditions per place. [2025-01-10 06:53:06,220 INFO L140 encePairwiseOnDemand]: 79/90 looper letters, 118 selfloop transitions, 12 changer transitions 0/152 dead transitions. [2025-01-10 06:53:06,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 152 transitions, 1048 flow [2025-01-10 06:53:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:06,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2025-01-10 06:53:06,221 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5527777777777778 [2025-01-10 06:53:06,221 INFO L175 Difference]: Start difference. First operand has 99 places, 118 transitions, 636 flow. Second operand 4 states and 199 transitions. [2025-01-10 06:53:06,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 152 transitions, 1048 flow [2025-01-10 06:53:06,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 152 transitions, 1044 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:06,228 INFO L231 Difference]: Finished difference. Result has 102 places, 118 transitions, 675 flow [2025-01-10 06:53:06,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=675, PETRI_PLACES=102, PETRI_TRANSITIONS=118} [2025-01-10 06:53:06,229 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 17 predicate places. [2025-01-10 06:53:06,229 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 675 flow [2025-01-10 06:53:06,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:06,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:06,229 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:06,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-10 06:53:06,230 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:06,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1146064892, now seen corresponding path program 1 times [2025-01-10 06:53:06,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:06,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481502509] [2025-01-10 06:53:06,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:06,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:06,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:53:06,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:53:06,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:06,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:06,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:06,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481502509] [2025-01-10 06:53:06,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481502509] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:06,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:06,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:53:06,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904102101] [2025-01-10 06:53:06,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:06,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:06,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:06,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:06,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:06,307 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2025-01-10 06:53:06,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 118 transitions, 675 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 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) [2025-01-10 06:53:06,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:06,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2025-01-10 06:53:06,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:07,790 INFO L124 PetriNetUnfolderBase]: 11418/18624 cut-off events. [2025-01-10 06:53:07,790 INFO L125 PetriNetUnfolderBase]: For 17808/18168 co-relation queries the response was YES. [2025-01-10 06:53:07,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50062 conditions, 18624 events. 11418/18624 cut-off events. For 17808/18168 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 132219 event pairs, 9166 based on Foata normal form. 304/13983 useless extension candidates. Maximal degree in co-relation 50038. Up to 14244 conditions per place. [2025-01-10 06:53:07,928 INFO L140 encePairwiseOnDemand]: 81/90 looper letters, 123 selfloop transitions, 11 changer transitions 6/162 dead transitions. [2025-01-10 06:53:07,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 162 transitions, 1227 flow [2025-01-10 06:53:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:07,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2025-01-10 06:53:07,929 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2025-01-10 06:53:07,929 INFO L175 Difference]: Start difference. First operand has 102 places, 118 transitions, 675 flow. Second operand 5 states and 224 transitions. [2025-01-10 06:53:07,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 162 transitions, 1227 flow [2025-01-10 06:53:07,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 162 transitions, 1214 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:07,950 INFO L231 Difference]: Finished difference. Result has 107 places, 121 transitions, 743 flow [2025-01-10 06:53:07,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=743, PETRI_PLACES=107, PETRI_TRANSITIONS=121} [2025-01-10 06:53:07,951 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 22 predicate places. [2025-01-10 06:53:07,951 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 121 transitions, 743 flow [2025-01-10 06:53:07,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 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) [2025-01-10 06:53:07,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:07,952 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-01-10 06:53:07,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-10 06:53:07,952 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:07,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash -195137713, now seen corresponding path program 2 times [2025-01-10 06:53:07,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:07,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760191543] [2025-01-10 06:53:07,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:07,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:07,967 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:53:07,970 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-01-10 06:53:07,970 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:53:07,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:07,992 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:53:07,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760191543] [2025-01-10 06:53:07,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760191543] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200849513] [2025-01-10 06:53:07,993 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:07,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:07,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:07,995 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:07,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 06:53:08,047 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:53:08,055 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-01-10 06:53:08,055 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:53:08,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:08,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:53:08,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:53:08,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:53:08,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200849513] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:08,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:08,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-01-10 06:53:08,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824511029] [2025-01-10 06:53:08,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:08,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:08,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:08,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:08,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:08,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 90 [2025-01-10 06:53:08,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 121 transitions, 743 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:08,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:08,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 90 [2025-01-10 06:53:08,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:09,610 INFO L124 PetriNetUnfolderBase]: 11418/18573 cut-off events. [2025-01-10 06:53:09,611 INFO L125 PetriNetUnfolderBase]: For 18376/18832 co-relation queries the response was YES. [2025-01-10 06:53:09,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51945 conditions, 18573 events. 11418/18573 cut-off events. For 18376/18832 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 132081 event pairs, 9166 based on Foata normal form. 1/13532 useless extension candidates. Maximal degree in co-relation 51919. Up to 16238 conditions per place. [2025-01-10 06:53:09,706 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 85 selfloop transitions, 16 changer transitions 0/120 dead transitions. [2025-01-10 06:53:09,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 120 transitions, 935 flow [2025-01-10 06:53:09,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:09,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2025-01-10 06:53:09,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2025-01-10 06:53:09,707 INFO L175 Difference]: Start difference. First operand has 107 places, 121 transitions, 743 flow. Second operand 4 states and 139 transitions. [2025-01-10 06:53:09,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 120 transitions, 935 flow [2025-01-10 06:53:09,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 120 transitions, 904 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:09,719 INFO L231 Difference]: Finished difference. Result has 107 places, 120 transitions, 734 flow [2025-01-10 06:53:09,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=734, PETRI_PLACES=107, PETRI_TRANSITIONS=120} [2025-01-10 06:53:09,724 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 22 predicate places. [2025-01-10 06:53:09,724 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 120 transitions, 734 flow [2025-01-10 06:53:09,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:09,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:09,724 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-01-10 06:53:09,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:09,924 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 [2025-01-10 06:53:09,925 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:09,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:09,925 INFO L85 PathProgramCache]: Analyzing trace with hash -224039820, now seen corresponding path program 1 times [2025-01-10 06:53:09,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:09,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635044128] [2025-01-10 06:53:09,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:09,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:09,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-10 06:53:09,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-10 06:53:09,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:09,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:10,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:10,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635044128] [2025-01-10 06:53:10,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635044128] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:10,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662514403] [2025-01-10 06:53:10,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:10,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:10,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:10,041 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:10,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 06:53:10,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-10 06:53:10,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-10 06:53:10,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:10,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:10,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 06:53:10,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:10,159 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:10,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662514403] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:10,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:10,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-01-10 06:53:10,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631794559] [2025-01-10 06:53:10,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:10,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 06:53:10,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:10,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 06:53:10,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-01-10 06:53:10,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 90 [2025-01-10 06:53:10,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 120 transitions, 734 flow. Second operand has 24 states, 24 states have (on average 23.083333333333332) internal successors, (554), 24 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:10,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:10,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 90 [2025-01-10 06:53:10,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:11,697 INFO L124 PetriNetUnfolderBase]: 11460/18741 cut-off events. [2025-01-10 06:53:11,697 INFO L125 PetriNetUnfolderBase]: For 19010/19466 co-relation queries the response was YES. [2025-01-10 06:53:11,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52592 conditions, 18741 events. 11460/18741 cut-off events. For 19010/19466 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 134448 event pairs, 9166 based on Foata normal form. 36/13728 useless extension candidates. Maximal degree in co-relation 52566. Up to 16208 conditions per place. [2025-01-10 06:53:11,844 INFO L140 encePairwiseOnDemand]: 78/90 looper letters, 55 selfloop transitions, 106 changer transitions 0/180 dead transitions. [2025-01-10 06:53:11,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 180 transitions, 1542 flow [2025-01-10 06:53:11,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-10 06:53:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-01-10 06:53:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 636 transitions. [2025-01-10 06:53:11,846 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2025-01-10 06:53:11,846 INFO L175 Difference]: Start difference. First operand has 107 places, 120 transitions, 734 flow. Second operand 22 states and 636 transitions. [2025-01-10 06:53:11,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 180 transitions, 1542 flow [2025-01-10 06:53:11,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 180 transitions, 1474 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:53:11,871 INFO L231 Difference]: Finished difference. Result has 131 places, 180 transitions, 1438 flow [2025-01-10 06:53:11,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1438, PETRI_PLACES=131, PETRI_TRANSITIONS=180} [2025-01-10 06:53:11,872 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 46 predicate places. [2025-01-10 06:53:11,872 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 180 transitions, 1438 flow [2025-01-10 06:53:11,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 23.083333333333332) internal successors, (554), 24 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:11,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:11,873 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:11,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:12,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-10 06:53:12,074 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:12,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:12,074 INFO L85 PathProgramCache]: Analyzing trace with hash 929479284, now seen corresponding path program 1 times [2025-01-10 06:53:12,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:12,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12633637] [2025-01-10 06:53:12,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:12,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:12,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 06:53:12,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:53:12,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:12,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:12,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:12,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12633637] [2025-01-10 06:53:12,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12633637] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:12,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712919616] [2025-01-10 06:53:12,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:12,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:12,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:12,185 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:12,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 06:53:12,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 06:53:12,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:53:12,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:12,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:12,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:53:12,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:53:12,291 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:12,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712919616] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:12,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:12,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-01-10 06:53:12,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008106610] [2025-01-10 06:53:12,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:12,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:12,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:12,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:12,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:53:12,292 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2025-01-10 06:53:12,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 180 transitions, 1438 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:12,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:12,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2025-01-10 06:53:12,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:13,358 INFO L124 PetriNetUnfolderBase]: 10409/17166 cut-off events. [2025-01-10 06:53:13,358 INFO L125 PetriNetUnfolderBase]: For 18207/18663 co-relation queries the response was YES. [2025-01-10 06:53:13,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48473 conditions, 17166 events. 10409/17166 cut-off events. For 18207/18663 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 121687 event pairs, 8249 based on Foata normal form. 0/12839 useless extension candidates. Maximal degree in co-relation 48441. Up to 14893 conditions per place. [2025-01-10 06:53:13,481 INFO L140 encePairwiseOnDemand]: 87/90 looper letters, 156 selfloop transitions, 1 changer transitions 0/178 dead transitions. [2025-01-10 06:53:13,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 178 transitions, 1744 flow [2025-01-10 06:53:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:13,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:13,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2025-01-10 06:53:13,482 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2025-01-10 06:53:13,482 INFO L175 Difference]: Start difference. First operand has 131 places, 180 transitions, 1438 flow. Second operand 3 states and 132 transitions. [2025-01-10 06:53:13,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 178 transitions, 1744 flow [2025-01-10 06:53:13,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 178 transitions, 1482 flow, removed 67 selfloop flow, removed 9 redundant places. [2025-01-10 06:53:13,502 INFO L231 Difference]: Finished difference. Result has 122 places, 178 transitions, 1170 flow [2025-01-10 06:53:13,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1170, PETRI_PLACES=122, PETRI_TRANSITIONS=178} [2025-01-10 06:53:13,503 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 37 predicate places. [2025-01-10 06:53:13,503 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 178 transitions, 1170 flow [2025-01-10 06:53:13,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:13,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:13,503 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:13,509 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 [2025-01-10 06:53:13,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:13,704 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:13,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:13,704 INFO L85 PathProgramCache]: Analyzing trace with hash 929479285, now seen corresponding path program 1 times [2025-01-10 06:53:13,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:13,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224387938] [2025-01-10 06:53:13,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:13,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:13,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 06:53:13,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:53:13,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:13,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 06:53:13,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:13,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224387938] [2025-01-10 06:53:13,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224387938] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:13,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:13,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:53:13,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041358785] [2025-01-10 06:53:13,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:13,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:13,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:13,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:13,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:13,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 90 [2025-01-10 06:53:13,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 178 transitions, 1170 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:13,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:13,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 90 [2025-01-10 06:53:13,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:15,396 INFO L124 PetriNetUnfolderBase]: 15270/24623 cut-off events. [2025-01-10 06:53:15,397 INFO L125 PetriNetUnfolderBase]: For 17962/17962 co-relation queries the response was YES. [2025-01-10 06:53:15,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66983 conditions, 24623 events. 15270/24623 cut-off events. For 17962/17962 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 172923 event pairs, 5004 based on Foata normal form. 438/19360 useless extension candidates. Maximal degree in co-relation 66951. Up to 8002 conditions per place. [2025-01-10 06:53:15,544 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 222 selfloop transitions, 6 changer transitions 0/246 dead transitions. [2025-01-10 06:53:15,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 246 transitions, 1897 flow [2025-01-10 06:53:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2025-01-10 06:53:15,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5355555555555556 [2025-01-10 06:53:15,546 INFO L175 Difference]: Start difference. First operand has 122 places, 178 transitions, 1170 flow. Second operand 5 states and 241 transitions. [2025-01-10 06:53:15,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 246 transitions, 1897 flow [2025-01-10 06:53:15,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 246 transitions, 1896 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:15,658 INFO L231 Difference]: Finished difference. Result has 128 places, 183 transitions, 1216 flow [2025-01-10 06:53:15,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1216, PETRI_PLACES=128, PETRI_TRANSITIONS=183} [2025-01-10 06:53:15,659 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 43 predicate places. [2025-01-10 06:53:15,659 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 183 transitions, 1216 flow [2025-01-10 06:53:15,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:15,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:15,659 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:15,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-10 06:53:15,659 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:15,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:15,660 INFO L85 PathProgramCache]: Analyzing trace with hash -412391993, now seen corresponding path program 1 times [2025-01-10 06:53:15,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:15,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786168880] [2025-01-10 06:53:15,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:15,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:15,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:15,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:15,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:15,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:15,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:15,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786168880] [2025-01-10 06:53:15,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786168880] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:15,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003947670] [2025-01-10 06:53:15,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:15,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:15,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:15,987 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:15,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 06:53:16,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:16,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:16,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:16,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:16,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:53:16,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 06:53:16,115 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:16,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003947670] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:16,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:16,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2025-01-10 06:53:16,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438220917] [2025-01-10 06:53:16,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:16,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:53:16,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:16,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:53:16,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:53:16,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-01-10 06:53:16,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 183 transitions, 1216 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:16,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:16,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-01-10 06:53:16,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:17,834 INFO L124 PetriNetUnfolderBase]: 15162/24335 cut-off events. [2025-01-10 06:53:17,834 INFO L125 PetriNetUnfolderBase]: For 21880/22270 co-relation queries the response was YES. [2025-01-10 06:53:17,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68819 conditions, 24335 events. 15162/24335 cut-off events. For 21880/22270 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 173123 event pairs, 4260 based on Foata normal form. 48/18703 useless extension candidates. Maximal degree in co-relation 68783. Up to 14768 conditions per place. [2025-01-10 06:53:18,030 INFO L140 encePairwiseOnDemand]: 83/90 looper letters, 208 selfloop transitions, 8 changer transitions 0/239 dead transitions. [2025-01-10 06:53:18,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 239 transitions, 1870 flow [2025-01-10 06:53:18,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2025-01-10 06:53:18,031 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5244444444444445 [2025-01-10 06:53:18,031 INFO L175 Difference]: Start difference. First operand has 128 places, 183 transitions, 1216 flow. Second operand 5 states and 236 transitions. [2025-01-10 06:53:18,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 239 transitions, 1870 flow [2025-01-10 06:53:18,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 239 transitions, 1870 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:53:18,052 INFO L231 Difference]: Finished difference. Result has 134 places, 187 transitions, 1267 flow [2025-01-10 06:53:18,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1267, PETRI_PLACES=134, PETRI_TRANSITIONS=187} [2025-01-10 06:53:18,053 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 49 predicate places. [2025-01-10 06:53:18,053 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 187 transitions, 1267 flow [2025-01-10 06:53:18,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:18,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:18,053 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:18,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 06:53:18,253 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,SelfDestructingSolverStorable15 [2025-01-10 06:53:18,253 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:18,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:18,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1263899528, now seen corresponding path program 1 times [2025-01-10 06:53:18,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:18,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649975224] [2025-01-10 06:53:18,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:18,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:18,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:18,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:18,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:18,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:18,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:18,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649975224] [2025-01-10 06:53:18,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649975224] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:18,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922735549] [2025-01-10 06:53:18,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:18,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:18,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:18,692 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:18,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 06:53:18,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:18,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:18,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:18,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:18,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:53:18,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 06:53:18,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:18,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922735549] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:18,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:18,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2025-01-10 06:53:18,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402109786] [2025-01-10 06:53:18,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:18,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:53:18,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:18,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:53:18,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2025-01-10 06:53:18,839 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 90 [2025-01-10 06:53:18,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 187 transitions, 1267 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:18,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:18,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 90 [2025-01-10 06:53:18,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:20,781 INFO L124 PetriNetUnfolderBase]: 14618/23397 cut-off events. [2025-01-10 06:53:20,782 INFO L125 PetriNetUnfolderBase]: For 31436/31826 co-relation queries the response was YES. [2025-01-10 06:53:20,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71057 conditions, 23397 events. 14618/23397 cut-off events. For 31436/31826 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 163077 event pairs, 5646 based on Foata normal form. 175/19204 useless extension candidates. Maximal degree in co-relation 71017. Up to 12637 conditions per place. [2025-01-10 06:53:21,002 INFO L140 encePairwiseOnDemand]: 82/90 looper letters, 207 selfloop transitions, 7 changer transitions 0/236 dead transitions. [2025-01-10 06:53:21,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 236 transitions, 1886 flow [2025-01-10 06:53:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2025-01-10 06:53:21,004 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5088888888888888 [2025-01-10 06:53:21,004 INFO L175 Difference]: Start difference. First operand has 134 places, 187 transitions, 1267 flow. Second operand 5 states and 229 transitions. [2025-01-10 06:53:21,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 236 transitions, 1886 flow [2025-01-10 06:53:21,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 236 transitions, 1873 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:21,035 INFO L231 Difference]: Finished difference. Result has 137 places, 186 transitions, 1266 flow [2025-01-10 06:53:21,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1266, PETRI_PLACES=137, PETRI_TRANSITIONS=186} [2025-01-10 06:53:21,035 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 52 predicate places. [2025-01-10 06:53:21,035 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 186 transitions, 1266 flow [2025-01-10 06:53:21,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:21,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:21,036 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:21,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 06:53:21,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:21,236 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:21,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash -363582800, now seen corresponding path program 1 times [2025-01-10 06:53:21,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:21,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474749589] [2025-01-10 06:53:21,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:21,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:21,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:21,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:21,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:21,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:53:21,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:21,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474749589] [2025-01-10 06:53:21,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474749589] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:21,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638767002] [2025-01-10 06:53:21,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:21,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:21,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:21,377 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:21,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 06:53:21,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:21,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:21,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:21,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:21,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:53:21,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:53:21,495 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:21,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638767002] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:21,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:21,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-01-10 06:53:21,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651425952] [2025-01-10 06:53:21,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:21,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:21,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:21,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:21,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:53:21,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2025-01-10 06:53:21,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 186 transitions, 1266 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:21,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:21,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2025-01-10 06:53:21,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:22,603 INFO L124 PetriNetUnfolderBase]: 9181/15407 cut-off events. [2025-01-10 06:53:22,603 INFO L125 PetriNetUnfolderBase]: For 23510/24212 co-relation queries the response was YES. [2025-01-10 06:53:22,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47728 conditions, 15407 events. 9181/15407 cut-off events. For 23510/24212 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 108369 event pairs, 7316 based on Foata normal form. 838/13740 useless extension candidates. Maximal degree in co-relation 47687. Up to 13279 conditions per place. [2025-01-10 06:53:22,711 INFO L140 encePairwiseOnDemand]: 87/90 looper letters, 158 selfloop transitions, 1 changer transitions 0/184 dead transitions. [2025-01-10 06:53:22,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 184 transitions, 1576 flow [2025-01-10 06:53:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:22,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2025-01-10 06:53:22,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2025-01-10 06:53:22,712 INFO L175 Difference]: Start difference. First operand has 137 places, 186 transitions, 1266 flow. Second operand 3 states and 130 transitions. [2025-01-10 06:53:22,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 184 transitions, 1576 flow [2025-01-10 06:53:22,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 184 transitions, 1569 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:22,729 INFO L231 Difference]: Finished difference. Result has 135 places, 184 transitions, 1253 flow [2025-01-10 06:53:22,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1253, PETRI_PLACES=135, PETRI_TRANSITIONS=184} [2025-01-10 06:53:22,730 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 50 predicate places. [2025-01-10 06:53:22,730 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 184 transitions, 1253 flow [2025-01-10 06:53:22,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:22,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:22,730 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:22,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:22,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-10 06:53:22,931 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:22,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:22,932 INFO L85 PathProgramCache]: Analyzing trace with hash 355914643, now seen corresponding path program 1 times [2025-01-10 06:53:22,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:22,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449813630] [2025-01-10 06:53:22,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:22,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:22,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:53:22,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:53:22,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:22,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:53:22,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:22,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449813630] [2025-01-10 06:53:22,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449813630] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:22,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:22,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:53:22,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088946136] [2025-01-10 06:53:22,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:22,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:22,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:22,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:22,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:22,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2025-01-10 06:53:22,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 184 transitions, 1253 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:22,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:22,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2025-01-10 06:53:22,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:23,988 INFO L124 PetriNetUnfolderBase]: 8357/14423 cut-off events. [2025-01-10 06:53:23,988 INFO L125 PetriNetUnfolderBase]: For 20616/21234 co-relation queries the response was YES. [2025-01-10 06:53:24,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43573 conditions, 14423 events. 8357/14423 cut-off events. For 20616/21234 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 103183 event pairs, 3620 based on Foata normal form. 278/12724 useless extension candidates. Maximal degree in co-relation 43531. Up to 11731 conditions per place. [2025-01-10 06:53:24,080 INFO L140 encePairwiseOnDemand]: 88/90 looper letters, 164 selfloop transitions, 1 changer transitions 0/190 dead transitions. [2025-01-10 06:53:24,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 190 transitions, 1592 flow [2025-01-10 06:53:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2025-01-10 06:53:24,081 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-01-10 06:53:24,081 INFO L175 Difference]: Start difference. First operand has 135 places, 184 transitions, 1253 flow. Second operand 3 states and 135 transitions. [2025-01-10 06:53:24,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 190 transitions, 1592 flow [2025-01-10 06:53:24,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 190 transitions, 1591 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:24,100 INFO L231 Difference]: Finished difference. Result has 135 places, 183 transitions, 1246 flow [2025-01-10 06:53:24,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1246, PETRI_PLACES=135, PETRI_TRANSITIONS=183} [2025-01-10 06:53:24,101 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 50 predicate places. [2025-01-10 06:53:24,101 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 183 transitions, 1246 flow [2025-01-10 06:53:24,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:24,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:24,101 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:24,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-01-10 06:53:24,101 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:24,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:24,102 INFO L85 PathProgramCache]: Analyzing trace with hash 355914644, now seen corresponding path program 1 times [2025-01-10 06:53:24,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:24,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435778828] [2025-01-10 06:53:24,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:24,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:24,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:53:24,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:53:24,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:24,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:53:24,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:24,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435778828] [2025-01-10 06:53:24,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435778828] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:24,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646866802] [2025-01-10 06:53:24,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:24,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:24,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:24,145 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:24,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 06:53:24,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:53:24,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:53:24,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:24,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:24,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 06:53:24,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:24,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:24,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646866802] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:24,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:24,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2025-01-10 06:53:24,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432712256] [2025-01-10 06:53:24,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:24,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 06:53:24,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:24,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 06:53:24,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-01-10 06:53:24,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 90 [2025-01-10 06:53:24,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 183 transitions, 1246 flow. Second operand has 15 states, 15 states have (on average 24.4) internal successors, (366), 15 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:24,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:24,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 90 [2025-01-10 06:53:24,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:26,989 INFO L124 PetriNetUnfolderBase]: 16275/27926 cut-off events. [2025-01-10 06:53:26,989 INFO L125 PetriNetUnfolderBase]: For 46937/48011 co-relation queries the response was YES. [2025-01-10 06:53:27,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84053 conditions, 27926 events. 16275/27926 cut-off events. For 46937/48011 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 217477 event pairs, 6542 based on Foata normal form. 1230/25833 useless extension candidates. Maximal degree in co-relation 84011. Up to 10393 conditions per place. [2025-01-10 06:53:27,172 INFO L140 encePairwiseOnDemand]: 75/90 looper letters, 327 selfloop transitions, 84 changer transitions 12/446 dead transitions. [2025-01-10 06:53:27,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 446 transitions, 3660 flow [2025-01-10 06:53:27,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 06:53:27,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-10 06:53:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 579 transitions. [2025-01-10 06:53:27,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3784313725490196 [2025-01-10 06:53:27,174 INFO L175 Difference]: Start difference. First operand has 135 places, 183 transitions, 1246 flow. Second operand 17 states and 579 transitions. [2025-01-10 06:53:27,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 446 transitions, 3660 flow [2025-01-10 06:53:27,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 446 transitions, 3658 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:27,210 INFO L231 Difference]: Finished difference. Result has 159 places, 238 transitions, 2092 flow [2025-01-10 06:53:27,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2092, PETRI_PLACES=159, PETRI_TRANSITIONS=238} [2025-01-10 06:53:27,211 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 74 predicate places. [2025-01-10 06:53:27,211 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 238 transitions, 2092 flow [2025-01-10 06:53:27,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.4) internal successors, (366), 15 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:27,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:27,211 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:27,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-10 06:53:27,412 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 [2025-01-10 06:53:27,412 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:27,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:27,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1412181866, now seen corresponding path program 1 times [2025-01-10 06:53:27,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:27,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536112435] [2025-01-10 06:53:27,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:27,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:27,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:53:27,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:53:27,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:27,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 06:53:27,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:27,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536112435] [2025-01-10 06:53:27,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536112435] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:27,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:27,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:53:27,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555624728] [2025-01-10 06:53:27,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:27,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:27,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:27,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:27,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:27,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 90 [2025-01-10 06:53:27,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 238 transitions, 2092 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:27,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:27,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 90 [2025-01-10 06:53:27,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:31,112 INFO L124 PetriNetUnfolderBase]: 26665/41530 cut-off events. [2025-01-10 06:53:31,113 INFO L125 PetriNetUnfolderBase]: For 73192/73884 co-relation queries the response was YES. [2025-01-10 06:53:31,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130264 conditions, 41530 events. 26665/41530 cut-off events. For 73192/73884 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 304888 event pairs, 11242 based on Foata normal form. 996/35800 useless extension candidates. Maximal degree in co-relation 130212. Up to 27832 conditions per place. [2025-01-10 06:53:31,567 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 266 selfloop transitions, 4 changer transitions 0/292 dead transitions. [2025-01-10 06:53:31,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 292 transitions, 2988 flow [2025-01-10 06:53:31,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:31,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 187 transitions. [2025-01-10 06:53:31,568 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2025-01-10 06:53:31,568 INFO L175 Difference]: Start difference. First operand has 159 places, 238 transitions, 2092 flow. Second operand 4 states and 187 transitions. [2025-01-10 06:53:31,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 292 transitions, 2988 flow [2025-01-10 06:53:31,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 292 transitions, 2959 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:31,638 INFO L231 Difference]: Finished difference. Result has 162 places, 240 transitions, 2102 flow [2025-01-10 06:53:31,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2102, PETRI_PLACES=162, PETRI_TRANSITIONS=240} [2025-01-10 06:53:31,638 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 77 predicate places. [2025-01-10 06:53:31,638 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 240 transitions, 2102 flow [2025-01-10 06:53:31,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:31,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:31,639 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:31,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-10 06:53:31,639 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:31,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:31,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1171676148, now seen corresponding path program 1 times [2025-01-10 06:53:31,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:31,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057005980] [2025-01-10 06:53:31,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:31,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:31,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 06:53:31,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:53:31,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:31,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:31,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:31,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057005980] [2025-01-10 06:53:31,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057005980] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:31,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399966093] [2025-01-10 06:53:31,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:31,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:31,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:31,968 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:31,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 06:53:32,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 06:53:32,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:53:32,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:32,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:32,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-10 06:53:32,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:32,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 06:53:32,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-10 06:53:32,216 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 06:53:32,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-01-10 06:53:32,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2025-01-10 06:53:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:32,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 06:53:32,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399966093] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:32,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:53:32,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 10] total 23 [2025-01-10 06:53:32,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91999710] [2025-01-10 06:53:32,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:32,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:53:32,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:32,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:53:32,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2025-01-10 06:53:32,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 90 [2025-01-10 06:53:32,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 240 transitions, 2102 flow. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:32,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:32,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 90 [2025-01-10 06:53:32,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:37,058 INFO L124 PetriNetUnfolderBase]: 25385/42088 cut-off events. [2025-01-10 06:53:37,059 INFO L125 PetriNetUnfolderBase]: For 85967/87095 co-relation queries the response was YES. [2025-01-10 06:53:37,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132899 conditions, 42088 events. 25385/42088 cut-off events. For 85967/87095 co-relation queries the response was YES. Maximal size of possible extension queue 1088. Compared 332668 event pairs, 10556 based on Foata normal form. 856/37332 useless extension candidates. Maximal degree in co-relation 132845. Up to 30541 conditions per place. [2025-01-10 06:53:37,712 INFO L140 encePairwiseOnDemand]: 78/90 looper letters, 241 selfloop transitions, 39 changer transitions 0/303 dead transitions. [2025-01-10 06:53:37,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 303 transitions, 3009 flow [2025-01-10 06:53:37,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:37,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 231 transitions. [2025-01-10 06:53:37,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2025-01-10 06:53:37,713 INFO L175 Difference]: Start difference. First operand has 162 places, 240 transitions, 2102 flow. Second operand 5 states and 231 transitions. [2025-01-10 06:53:37,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 303 transitions, 3009 flow [2025-01-10 06:53:37,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 303 transitions, 3002 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:37,806 INFO L231 Difference]: Finished difference. Result has 167 places, 250 transitions, 2331 flow [2025-01-10 06:53:37,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2331, PETRI_PLACES=167, PETRI_TRANSITIONS=250} [2025-01-10 06:53:37,807 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 82 predicate places. [2025-01-10 06:53:37,807 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 250 transitions, 2331 flow [2025-01-10 06:53:37,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:37,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:37,807 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:37,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:38,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:38,008 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:38,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash -868261428, now seen corresponding path program 2 times [2025-01-10 06:53:38,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:38,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926117528] [2025-01-10 06:53:38,008 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:38,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:38,018 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 06:53:38,035 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 21 statements. [2025-01-10 06:53:38,038 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:53:38,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 06:53:38,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:38,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926117528] [2025-01-10 06:53:38,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926117528] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:38,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:38,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:53:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177990414] [2025-01-10 06:53:38,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:38,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:53:38,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:38,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:53:38,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:53:38,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 90 [2025-01-10 06:53:38,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 250 transitions, 2331 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:38,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:38,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 90 [2025-01-10 06:53:38,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:43,035 INFO L124 PetriNetUnfolderBase]: 27507/45206 cut-off events. [2025-01-10 06:53:43,035 INFO L125 PetriNetUnfolderBase]: For 97690/98500 co-relation queries the response was YES. [2025-01-10 06:53:43,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146790 conditions, 45206 events. 27507/45206 cut-off events. For 97690/98500 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 356420 event pairs, 13064 based on Foata normal form. 334/39434 useless extension candidates. Maximal degree in co-relation 146733. Up to 35623 conditions per place. [2025-01-10 06:53:43,555 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 256 selfloop transitions, 21 changer transitions 1/300 dead transitions. [2025-01-10 06:53:43,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 300 transitions, 3161 flow [2025-01-10 06:53:43,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:53:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:53:43,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 242 transitions. [2025-01-10 06:53:43,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44814814814814813 [2025-01-10 06:53:43,556 INFO L175 Difference]: Start difference. First operand has 167 places, 250 transitions, 2331 flow. Second operand 6 states and 242 transitions. [2025-01-10 06:53:43,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 300 transitions, 3161 flow [2025-01-10 06:53:43,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 300 transitions, 3161 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:53:43,781 INFO L231 Difference]: Finished difference. Result has 174 places, 257 transitions, 2497 flow [2025-01-10 06:53:43,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2497, PETRI_PLACES=174, PETRI_TRANSITIONS=257} [2025-01-10 06:53:43,782 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 89 predicate places. [2025-01-10 06:53:43,782 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 257 transitions, 2497 flow [2025-01-10 06:53:43,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:43,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:43,782 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:43,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-01-10 06:53:43,782 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:43,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:43,782 INFO L85 PathProgramCache]: Analyzing trace with hash -622847847, now seen corresponding path program 1 times [2025-01-10 06:53:43,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:43,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25019862] [2025-01-10 06:53:43,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:43,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:43,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:53:43,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:53:43,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:43,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:44,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:44,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:44,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25019862] [2025-01-10 06:53:44,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25019862] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:44,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656408506] [2025-01-10 06:53:44,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:44,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:44,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:44,184 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:44,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 06:53:44,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:53:44,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:53:44,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:44,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:44,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-10 06:53:44,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:44,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 06:53:44,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-10 06:53:44,348 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 06:53:44,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-01-10 06:53:44,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-01-10 06:53:44,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 06:53:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:44,459 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 06:53:44,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656408506] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:44,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:53:44,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 10] total 26 [2025-01-10 06:53:44,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369448626] [2025-01-10 06:53:44,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:44,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 06:53:44,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:44,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 06:53:44,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2025-01-10 06:53:44,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 90 [2025-01-10 06:53:44,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 257 transitions, 2497 flow. Second operand has 7 states, 7 states have (on average 28.714285714285715) internal successors, (201), 7 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:44,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:44,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 90 [2025-01-10 06:53:44,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:48,838 INFO L124 PetriNetUnfolderBase]: 23439/38990 cut-off events. [2025-01-10 06:53:48,838 INFO L125 PetriNetUnfolderBase]: For 81034/82788 co-relation queries the response was YES. [2025-01-10 06:53:49,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128864 conditions, 38990 events. 23439/38990 cut-off events. For 81034/82788 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 298797 event pairs, 5584 based on Foata normal form. 316/34958 useless extension candidates. Maximal degree in co-relation 128803. Up to 22050 conditions per place. [2025-01-10 06:53:49,270 INFO L140 encePairwiseOnDemand]: 78/90 looper letters, 264 selfloop transitions, 35 changer transitions 0/322 dead transitions. [2025-01-10 06:53:49,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 322 transitions, 3428 flow [2025-01-10 06:53:49,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:53:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:53:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2025-01-10 06:53:49,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2025-01-10 06:53:49,271 INFO L175 Difference]: Start difference. First operand has 174 places, 257 transitions, 2497 flow. Second operand 6 states and 265 transitions. [2025-01-10 06:53:49,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 322 transitions, 3428 flow [2025-01-10 06:53:49,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 322 transitions, 3394 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:49,457 INFO L231 Difference]: Finished difference. Result has 181 places, 261 transitions, 2626 flow [2025-01-10 06:53:49,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2626, PETRI_PLACES=181, PETRI_TRANSITIONS=261} [2025-01-10 06:53:49,459 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 96 predicate places. [2025-01-10 06:53:49,459 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 261 transitions, 2626 flow [2025-01-10 06:53:49,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.714285714285715) internal successors, (201), 7 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:49,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:49,460 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:49,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-10 06:53:49,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:49,660 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:49,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:49,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1886279460, now seen corresponding path program 1 times [2025-01-10 06:53:49,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:49,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293418688] [2025-01-10 06:53:49,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:49,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:49,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:53:49,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:53:49,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:49,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293418688] [2025-01-10 06:53:49,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293418688] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:49,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370359705] [2025-01-10 06:53:49,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:49,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:49,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:49,950 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:49,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-10 06:53:50,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:53:50,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:53:50,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:50,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:50,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-10 06:53:50,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:50,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 06:53:50,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-10 06:53:50,124 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 06:53:50,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-01-10 06:53:50,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-01-10 06:53:50,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 06:53:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:50,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 06:53:50,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370359705] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:50,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:53:50,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 10] total 23 [2025-01-10 06:53:50,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166094883] [2025-01-10 06:53:50,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:50,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 06:53:50,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:50,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 06:53:50,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2025-01-10 06:53:50,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 90 [2025-01-10 06:53:50,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 261 transitions, 2626 flow. Second operand has 7 states, 7 states have (on average 28.714285714285715) internal successors, (201), 7 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:50,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:50,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 90 [2025-01-10 06:53:50,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand