./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-array-int-subst.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/chl-array-int-subst.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 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:48:25,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:48:25,585 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:48:25,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:48:25,593 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:48:25,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:48:25,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:48:25,625 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:48:25,626 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:48:25,626 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:48:25,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:48:25,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:48:25,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:48:25,626 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:48:25,626 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:48:25,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:48:25,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:48:25,626 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:48:25,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:48:25,627 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:48:25,627 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:48:25,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:48:25,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:48:25,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:48:25,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:48:25,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:48:25,628 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:48:25,628 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:48:25,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:48:25,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:48:25,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:48:25,629 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:48:25,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:48:25,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:48:25,629 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 -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2025-01-10 06:48:25,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:48:25,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:48:25,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:48:25,890 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:48:25,890 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:48:25,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2025-01-10 06:48:27,070 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ac61f5c18/9ddd0af3cd1b44eaa0d27870ba738ccb/FLAG67772be71 [2025-01-10 06:48:27,320 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:48:27,321 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2025-01-10 06:48:27,331 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ac61f5c18/9ddd0af3cd1b44eaa0d27870ba738ccb/FLAG67772be71 [2025-01-10 06:48:27,647 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ac61f5c18/9ddd0af3cd1b44eaa0d27870ba738ccb [2025-01-10 06:48:27,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:48:27,650 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:48:27,654 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:48:27,654 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:48:27,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:48:27,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5198b879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27, skipping insertion in model container [2025-01-10 06:48:27,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,692 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:48:27,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:48:27,889 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:48:27,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:48:27,914 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:48:27,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27 WrapperNode [2025-01-10 06:48:27,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:48:27,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:48:27,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:48:27,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:48:27,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,941 INFO L138 Inliner]: procedures = 25, calls = 36, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 318 [2025-01-10 06:48:27,941 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:48:27,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:48:27,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:48:27,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:48:27,948 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,951 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,967 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 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 06:48:27,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,968 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,975 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,976 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,979 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,988 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:48:27,989 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:48:27,989 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:48:27,989 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:48:27,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (1/1) ... [2025-01-10 06:48:27,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:48:28,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:48:28,016 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 06:48:28,020 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 06:48:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:48:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:48:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:48:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:48:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:48:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 06:48:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 06:48:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:48:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:48:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:48:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:48:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:48:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:48:28,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:48:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:48:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:48:28,046 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 06:48:28,148 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:48:28,150 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:48:28,622 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:48:28,622 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:48:28,867 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:48:28,867 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:48:28,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:48:28 BoogieIcfgContainer [2025-01-10 06:48:28,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:48:28,869 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:48:28,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:48:28,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:48:28,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:48:27" (1/3) ... [2025-01-10 06:48:28,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490102ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:48:28, skipping insertion in model container [2025-01-10 06:48:28,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:48:27" (2/3) ... [2025-01-10 06:48:28,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490102ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:48:28, skipping insertion in model container [2025-01-10 06:48:28,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:48:28" (3/3) ... [2025-01-10 06:48:28,875 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2025-01-10 06:48:28,886 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:48:28,887 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-array-int-subst.wvr.c that has 4 procedures, 114 locations, 1 initial locations, 6 loop locations, and 36 error locations. [2025-01-10 06:48:28,888 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:48:28,941 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-10 06:48:28,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 128 transitions, 277 flow [2025-01-10 06:48:29,000 INFO L124 PetriNetUnfolderBase]: 15/125 cut-off events. [2025-01-10 06:48:29,001 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 06:48:29,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 15/125 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 496 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2025-01-10 06:48:29,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 128 transitions, 277 flow [2025-01-10 06:48:29,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 123 transitions, 261 flow [2025-01-10 06:48:29,013 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:48:29,020 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;@755b0b38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:48:29,020 INFO L334 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2025-01-10 06:48:29,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:48:29,022 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:48:29,022 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:48:29,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:48:29,023 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:48:29,023 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-01-10 06:48:29,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:48:29,028 INFO L85 PathProgramCache]: Analyzing trace with hash 947141, now seen corresponding path program 1 times [2025-01-10 06:48:29,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:48:29,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965170341] [2025-01-10 06:48:29,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:48:29,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:48:29,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:48:29,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:48:29,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:48:29,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:48:29,218 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 06:48:29,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:48:29,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965170341] [2025-01-10 06:48:29,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965170341] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:48:29,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:48:29,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:48:29,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004742731] [2025-01-10 06:48:29,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:48:29,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:48:29,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:48:29,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:48:29,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:48:29,266 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 128 [2025-01-10 06:48:29,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 123 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 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 06:48:29,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:48:29,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 128 [2025-01-10 06:48:29,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:48:30,916 INFO L124 PetriNetUnfolderBase]: 9931/19487 cut-off events. [2025-01-10 06:48:30,917 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2025-01-10 06:48:30,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32899 conditions, 19487 events. 9931/19487 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 179772 event pairs, 6561 based on Foata normal form. 3/15824 useless extension candidates. Maximal degree in co-relation 31712. Up to 13038 conditions per place. [2025-01-10 06:48:31,025 INFO L140 encePairwiseOnDemand]: 112/128 looper letters, 59 selfloop transitions, 10 changer transitions 0/132 dead transitions. [2025-01-10 06:48:31,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 132 transitions, 417 flow [2025-01-10 06:48:31,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:48:31,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:48:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2025-01-10 06:48:31,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.662109375 [2025-01-10 06:48:31,036 INFO L175 Difference]: Start difference. First operand has 118 places, 123 transitions, 261 flow. Second operand 4 states and 339 transitions. [2025-01-10 06:48:31,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 132 transitions, 417 flow [2025-01-10 06:48:31,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 132 transitions, 408 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-10 06:48:31,051 INFO L231 Difference]: Finished difference. Result has 119 places, 132 transitions, 340 flow [2025-01-10 06:48:31,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=119, PETRI_TRANSITIONS=132} [2025-01-10 06:48:31,054 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2025-01-10 06:48:31,055 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 132 transitions, 340 flow [2025-01-10 06:48:31,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 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 06:48:31,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:48:31,055 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:48:31,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:48:31,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-01-10 06:48:31,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:48:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1847507960, now seen corresponding path program 1 times [2025-01-10 06:48:31,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:48:31,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042012791] [2025-01-10 06:48:31,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:48:31,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:48:31,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:48:31,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:48:31,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:48:31,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:48:31,175 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 06:48:31,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:48:31,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042012791] [2025-01-10 06:48:31,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042012791] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:48:31,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303096432] [2025-01-10 06:48:31,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:48:31,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:48:31,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:48:31,179 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 06:48:31,181 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 06:48:31,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:48:31,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:48:31,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:48:31,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:48:31,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:48:31,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:48:31,275 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 06:48:31,276 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:48:31,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303096432] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:48:31,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:48:31,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:48:31,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321718208] [2025-01-10 06:48:31,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:48:31,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:48:31,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:48:31,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:48:31,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:48:31,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 128 [2025-01-10 06:48:31,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 132 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 0 states have call successors, (0), 0 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 06:48:31,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:48:31,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 128 [2025-01-10 06:48:31,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:48:32,593 INFO L124 PetriNetUnfolderBase]: 9931/19484 cut-off events. [2025-01-10 06:48:32,593 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2025-01-10 06:48:32,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32790 conditions, 19484 events. 9931/19484 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 179726 event pairs, 6561 based on Foata normal form. 3/15826 useless extension candidates. Maximal degree in co-relation 32717. Up to 13023 conditions per place. [2025-01-10 06:48:32,682 INFO L140 encePairwiseOnDemand]: 115/128 looper letters, 49 selfloop transitions, 17 changer transitions 0/129 dead transitions. [2025-01-10 06:48:32,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 129 transitions, 460 flow [2025-01-10 06:48:32,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:48:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:48:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 465 transitions. [2025-01-10 06:48:32,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.60546875 [2025-01-10 06:48:32,685 INFO L175 Difference]: Start difference. First operand has 119 places, 132 transitions, 340 flow. Second operand 6 states and 465 transitions. [2025-01-10 06:48:32,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 129 transitions, 460 flow [2025-01-10 06:48:32,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 129 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:48:32,691 INFO L231 Difference]: Finished difference. Result has 121 places, 129 transitions, 362 flow [2025-01-10 06:48:32,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=121, PETRI_TRANSITIONS=129} [2025-01-10 06:48:32,692 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 3 predicate places. [2025-01-10 06:48:32,692 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 129 transitions, 362 flow [2025-01-10 06:48:32,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 0 states have call successors, (0), 0 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 06:48:32,693 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:48:32,693 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:48:32,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 06:48:32,897 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 06:48:32,897 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-01-10 06:48:32,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:48:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1476132248, now seen corresponding path program 1 times [2025-01-10 06:48:32,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:48:32,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989938693] [2025-01-10 06:48:32,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:48:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:48:32,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:48:32,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:48:32,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:48:32,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:48:33,036 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 06:48:33,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:48:33,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989938693] [2025-01-10 06:48:33,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989938693] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:48:33,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:48:33,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:48:33,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5932562] [2025-01-10 06:48:33,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:48:33,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:48:33,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:48:33,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:48:33,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:48:33,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2025-01-10 06:48:33,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 129 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 0 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 06:48:33,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:48:33,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2025-01-10 06:48:33,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:48:35,372 INFO L124 PetriNetUnfolderBase]: 21545/42249 cut-off events. [2025-01-10 06:48:35,373 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2025-01-10 06:48:35,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71045 conditions, 42249 events. 21545/42249 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 1869. Compared 432244 event pairs, 14202 based on Foata normal form. 240/34466 useless extension candidates. Maximal degree in co-relation 35711. Up to 14229 conditions per place. [2025-01-10 06:48:35,726 INFO L140 encePairwiseOnDemand]: 120/128 looper letters, 108 selfloop transitions, 8 changer transitions 0/180 dead transitions. [2025-01-10 06:48:35,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 180 transitions, 732 flow [2025-01-10 06:48:35,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:48:35,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:48:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2025-01-10 06:48:35,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.69140625 [2025-01-10 06:48:35,728 INFO L175 Difference]: Start difference. First operand has 121 places, 129 transitions, 362 flow. Second operand 6 states and 531 transitions. [2025-01-10 06:48:35,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 180 transitions, 732 flow [2025-01-10 06:48:35,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 180 transitions, 680 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-01-10 06:48:35,731 INFO L231 Difference]: Finished difference. Result has 124 places, 132 transitions, 369 flow [2025-01-10 06:48:35,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=369, PETRI_PLACES=124, PETRI_TRANSITIONS=132} [2025-01-10 06:48:35,732 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2025-01-10 06:48:35,732 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 132 transitions, 369 flow [2025-01-10 06:48:35,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 0 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 06:48:35,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:48:35,733 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:48:35,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:48:35,733 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-01-10 06:48:35,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:48:35,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1438170919, now seen corresponding path program 1 times [2025-01-10 06:48:35,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:48:35,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168626534] [2025-01-10 06:48:35,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:48:35,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:48:35,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:48:35,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:48:35,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:48:35,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:48:35,971 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 06:48:35,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:48:35,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168626534] [2025-01-10 06:48:35,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168626534] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:48:35,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463727414] [2025-01-10 06:48:35,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:48:35,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:48:35,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:48:35,979 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 06:48:35,980 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 06:48:36,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:48:36,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:48:36,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:48:36,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:48:36,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:48:36,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:48:36,072 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 06:48:36,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:48:36,164 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 06:48:36,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463727414] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:48:36,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:48:36,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 06:48:36,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606287805] [2025-01-10 06:48:36,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:48:36,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:48:36,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:48:36,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:48:36,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:48:36,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 128 [2025-01-10 06:48:36,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 132 transitions, 369 flow. Second operand has 12 states, 12 states have (on average 67.08333333333333) internal successors, (805), 12 states have internal predecessors, (805), 0 states have call successors, (0), 0 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 06:48:36,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:48:36,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 128 [2025-01-10 06:48:36,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:48:38,009 INFO L124 PetriNetUnfolderBase]: 19870/38996 cut-off events. [2025-01-10 06:48:38,009 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2025-01-10 06:48:38,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65664 conditions, 38996 events. 19870/38996 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 395163 event pairs, 13122 based on Foata normal form. 12/31684 useless extension candidates. Maximal degree in co-relation 32897. Up to 26067 conditions per place. [2025-01-10 06:48:38,242 INFO L140 encePairwiseOnDemand]: 115/128 looper letters, 56 selfloop transitions, 39 changer transitions 0/159 dead transitions. [2025-01-10 06:48:38,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 159 transitions, 694 flow [2025-01-10 06:48:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:48:38,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:48:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 762 transitions. [2025-01-10 06:48:38,244 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5953125 [2025-01-10 06:48:38,244 INFO L175 Difference]: Start difference. First operand has 124 places, 132 transitions, 369 flow. Second operand 10 states and 762 transitions. [2025-01-10 06:48:38,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 159 transitions, 694 flow [2025-01-10 06:48:38,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 159 transitions, 686 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-10 06:48:38,250 INFO L231 Difference]: Finished difference. Result has 135 places, 159 transitions, 624 flow [2025-01-10 06:48:38,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=624, PETRI_PLACES=135, PETRI_TRANSITIONS=159} [2025-01-10 06:48:38,254 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 17 predicate places. [2025-01-10 06:48:38,254 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 159 transitions, 624 flow [2025-01-10 06:48:38,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.08333333333333) internal successors, (805), 12 states have internal predecessors, (805), 0 states have call successors, (0), 0 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 06:48:38,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:48:38,255 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:48:38,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 06:48:38,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:48:38,457 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-01-10 06:48:38,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:48:38,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1484541625, now seen corresponding path program 1 times [2025-01-10 06:48:38,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:48:38,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167995996] [2025-01-10 06:48:38,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:48:38,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:48:38,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:48:38,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:48:38,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:48:38,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:48:38,588 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 06:48:38,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:48:38,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167995996] [2025-01-10 06:48:38,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167995996] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:48:38,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:48:38,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:48:38,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946826705] [2025-01-10 06:48:38,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:48:38,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:48:38,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:48:38,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:48:38,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:48:38,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2025-01-10 06:48:38,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 159 transitions, 624 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 06:48:38,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:48:38,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2025-01-10 06:48:38,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:48:42,961 INFO L124 PetriNetUnfolderBase]: 41670/81500 cut-off events. [2025-01-10 06:48:42,962 INFO L125 PetriNetUnfolderBase]: For 3107/3107 co-relation queries the response was YES. [2025-01-10 06:48:43,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138574 conditions, 81500 events. 41670/81500 cut-off events. For 3107/3107 co-relation queries the response was YES. Maximal size of possible extension queue 3441. Compared 903430 event pairs, 27334 based on Foata normal form. 478/67445 useless extension candidates. Maximal degree in co-relation 138354. Up to 27306 conditions per place. [2025-01-10 06:48:43,567 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 168 selfloop transitions, 4 changer transitions 0/236 dead transitions. [2025-01-10 06:48:43,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 236 transitions, 1308 flow [2025-01-10 06:48:43,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:48:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:48:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2025-01-10 06:48:43,569 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.763671875 [2025-01-10 06:48:43,569 INFO L175 Difference]: Start difference. First operand has 135 places, 159 transitions, 624 flow. Second operand 4 states and 391 transitions. [2025-01-10 06:48:43,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 236 transitions, 1308 flow [2025-01-10 06:48:43,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 236 transitions, 1244 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-01-10 06:48:43,580 INFO L231 Difference]: Finished difference. Result has 138 places, 160 transitions, 608 flow [2025-01-10 06:48:43,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=608, PETRI_PLACES=138, PETRI_TRANSITIONS=160} [2025-01-10 06:48:43,582 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 20 predicate places. [2025-01-10 06:48:43,583 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 160 transitions, 608 flow [2025-01-10 06:48:43,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 06:48:43,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:48:43,583 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:48:43,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:48:43,584 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-01-10 06:48:43,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:48:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1227271969, now seen corresponding path program 1 times [2025-01-10 06:48:43,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:48:43,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8169485] [2025-01-10 06:48:43,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:48:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:48:43,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:48:43,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:48:43,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:48:43,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:48:43,714 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 06:48:43,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:48:43,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8169485] [2025-01-10 06:48:43,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8169485] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:48:43,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:48:43,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:48:43,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448575825] [2025-01-10 06:48:43,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:48:43,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:48:43,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:48:43,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:48:43,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:48:43,762 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2025-01-10 06:48:43,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 160 transitions, 608 flow. Second operand has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 0 states have call successors, (0), 0 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 06:48:43,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:48:43,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2025-01-10 06:48:43,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:48:53,021 INFO L124 PetriNetUnfolderBase]: 86680/168540 cut-off events. [2025-01-10 06:48:53,021 INFO L125 PetriNetUnfolderBase]: For 1066/1066 co-relation queries the response was YES. [2025-01-10 06:48:53,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284443 conditions, 168540 events. 86680/168540 cut-off events. For 1066/1066 co-relation queries the response was YES. Maximal size of possible extension queue 6990. Compared 2026051 event pairs, 57160 based on Foata normal form. 1056/137741 useless extension candidates. Maximal degree in co-relation 284231. Up to 57292 conditions per place. [2025-01-10 06:48:54,269 INFO L140 encePairwiseOnDemand]: 121/128 looper letters, 123 selfloop transitions, 16 changer transitions 0/205 dead transitions. [2025-01-10 06:48:54,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 205 transitions, 982 flow [2025-01-10 06:48:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:48:54,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:48:54,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 525 transitions. [2025-01-10 06:48:54,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.68359375 [2025-01-10 06:48:54,271 INFO L175 Difference]: Start difference. First operand has 138 places, 160 transitions, 608 flow. Second operand 6 states and 525 transitions. [2025-01-10 06:48:54,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 205 transitions, 982 flow [2025-01-10 06:48:54,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 205 transitions, 980 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-01-10 06:48:54,276 INFO L231 Difference]: Finished difference. Result has 145 places, 161 transitions, 660 flow [2025-01-10 06:48:54,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=660, PETRI_PLACES=145, PETRI_TRANSITIONS=161} [2025-01-10 06:48:54,277 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 27 predicate places. [2025-01-10 06:48:54,277 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 161 transitions, 660 flow [2025-01-10 06:48:54,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 0 states have call successors, (0), 0 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 06:48:54,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:48:54,277 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:48:54,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:48:54,277 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-01-10 06:48:54,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:48:54,277 INFO L85 PathProgramCache]: Analyzing trace with hash 609275714, now seen corresponding path program 1 times [2025-01-10 06:48:54,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:48:54,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142087886] [2025-01-10 06:48:54,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:48:54,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:48:54,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:48:54,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:48:54,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:48:54,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:48:54,382 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 06:48:54,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:48:54,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142087886] [2025-01-10 06:48:54,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142087886] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:48:54,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:48:54,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:48:54,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244266371] [2025-01-10 06:48:54,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:48:54,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:48:54,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:48:54,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:48:54,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:48:54,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2025-01-10 06:48:54,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 161 transitions, 660 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 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 06:48:54,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:48:54,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2025-01-10 06:48:54,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:49:03,577 INFO L124 PetriNetUnfolderBase]: 84886/164436 cut-off events. [2025-01-10 06:49:03,578 INFO L125 PetriNetUnfolderBase]: For 6375/6375 co-relation queries the response was YES. [2025-01-10 06:49:04,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280823 conditions, 164436 events. 84886/164436 cut-off events. For 6375/6375 co-relation queries the response was YES. Maximal size of possible extension queue 6873. Compared 1966378 event pairs, 54882 based on Foata normal form. 1032/136308 useless extension candidates. Maximal degree in co-relation 280603. Up to 54743 conditions per place. [2025-01-10 06:49:04,942 INFO L140 encePairwiseOnDemand]: 119/128 looper letters, 186 selfloop transitions, 14 changer transitions 0/266 dead transitions. [2025-01-10 06:49:04,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 266 transitions, 1461 flow [2025-01-10 06:49:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:49:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:49:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 705 transitions. [2025-01-10 06:49:04,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6884765625 [2025-01-10 06:49:04,945 INFO L175 Difference]: Start difference. First operand has 145 places, 161 transitions, 660 flow. Second operand 8 states and 705 transitions. [2025-01-10 06:49:04,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 266 transitions, 1461 flow [2025-01-10 06:49:04,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 266 transitions, 1430 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:49:04,957 INFO L231 Difference]: Finished difference. Result has 154 places, 172 transitions, 813 flow [2025-01-10 06:49:04,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=813, PETRI_PLACES=154, PETRI_TRANSITIONS=172} [2025-01-10 06:49:04,958 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 36 predicate places. [2025-01-10 06:49:04,958 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 172 transitions, 813 flow [2025-01-10 06:49:04,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 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 06:49:04,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:49:04,958 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:49:04,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 06:49:04,959 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-01-10 06:49:04,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:49:04,962 INFO L85 PathProgramCache]: Analyzing trace with hash -917945603, now seen corresponding path program 1 times [2025-01-10 06:49:04,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:49:04,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560327403] [2025-01-10 06:49:04,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:49:04,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:49:04,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:49:04,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:49:04,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:49:04,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:49:05,093 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 06:49:05,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:49:05,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560327403] [2025-01-10 06:49:05,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560327403] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:49:05,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488871205] [2025-01-10 06:49:05,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:49:05,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:49:05,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:49:05,096 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 06:49:05,309 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 06:49:05,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:49:05,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:49:05,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:49:05,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:49:05,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:49:05,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:49:05,458 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 06:49:05,458 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:49:05,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488871205] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:49:05,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:49:05,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-01-10 06:49:05,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23580684] [2025-01-10 06:49:05,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:49:05,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:49:05,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:49:05,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:49:05,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:49:05,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 128 [2025-01-10 06:49:05,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 172 transitions, 813 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 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 06:49:05,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:49:05,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 128 [2025-01-10 06:49:05,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand