./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack_longer-2.i --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/pthread/stack_longer-2.i -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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:33:29,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:33:29,944 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:33:29,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:33:29,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:33:29,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:33:29,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:33:29,962 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:33:29,962 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:33:29,962 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:33:29,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:33:29,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:33:29,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:33:29,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:33:29,963 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:33:29,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:33:29,963 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:33:29,963 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:33:29,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:33:29,963 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:33:29,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:33:29,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:33:29,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:33:29,964 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:33:29,964 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:33:29,964 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:33:29,964 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:33:29,964 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:33:29,964 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:33:29,964 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:33:29,964 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:33:29,964 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:33:29,964 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:33:29,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:33:29,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:33:29,965 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:33:29,966 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 -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2025-01-10 06:33:30,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:33:30,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:33:30,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:33:30,222 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:33:30,222 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:33:30,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longer-2.i [2025-01-10 06:33:31,557 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0f3d9b2cb/11b206355f064265b8ca40de46505d0f/FLAG700143464 [2025-01-10 06:33:31,917 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:33:31,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2025-01-10 06:33:31,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0f3d9b2cb/11b206355f064265b8ca40de46505d0f/FLAG700143464 [2025-01-10 06:33:31,946 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0f3d9b2cb/11b206355f064265b8ca40de46505d0f [2025-01-10 06:33:31,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:33:31,948 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:33:31,950 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:33:31,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:33:31,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:33:31,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:33:31" (1/1) ... [2025-01-10 06:33:31,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63171e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:31, skipping insertion in model container [2025-01-10 06:33:31,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:33:31" (1/1) ... [2025-01-10 06:33:31,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:33:32,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:33:32,473 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:33:32,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:33:32,560 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:33:32,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32 WrapperNode [2025-01-10 06:33:32,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:33:32,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:33:32,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:33:32,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:33:32,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,602 INFO L138 Inliner]: procedures = 277, calls = 431, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 551 [2025-01-10 06:33:32,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:33:32,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:33:32,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:33:32,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:33:32,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,616 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,628 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 5, 402]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 5, 400]. The 1 writes are split as follows [0, 0, 1]. [2025-01-10 06:33:32,629 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,641 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,642 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:33:32,650 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:33:32,650 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:33:32,650 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:33:32,651 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (1/1) ... [2025-01-10 06:33:32,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:33:32,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:33:32,677 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 06:33:32,686 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 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-01-10 06:33:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-01-10 06:33:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 06:33:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:33:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:33:32,700 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 06:33:32,796 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:33:32,798 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:33:33,302 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:33:33,302 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:33:36,357 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:33:36,360 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:33:36,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:33:36 BoogieIcfgContainer [2025-01-10 06:33:36,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:33:36,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:33:36,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:33:36,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:33:36,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:33:31" (1/3) ... [2025-01-10 06:33:36,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e24f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:33:36, skipping insertion in model container [2025-01-10 06:33:36,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:33:32" (2/3) ... [2025-01-10 06:33:36,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e24f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:33:36, skipping insertion in model container [2025-01-10 06:33:36,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:33:36" (3/3) ... [2025-01-10 06:33:36,367 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2025-01-10 06:33:36,386 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:33:36,391 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longer-2.i that has 3 procedures, 44 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-01-10 06:33:36,391 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:33:36,459 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 06:33:36,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2025-01-10 06:33:36,529 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2025-01-10 06:33:36,531 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 06:33:36,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2025-01-10 06:33:36,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2025-01-10 06:33:36,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2025-01-10 06:33:36,544 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:33:36,555 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;@72261da2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:33:36,555 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-01-10 06:33:36,572 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:33:36,572 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2025-01-10 06:33:36,572 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 06:33:36,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:36,573 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:33:36,573 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:36,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:36,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1518677240, now seen corresponding path program 1 times [2025-01-10 06:33:36,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:36,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948787819] [2025-01-10 06:33:36,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:36,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:36,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:33:36,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:33:36,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:36,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:37,171 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 06:33:37,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:37,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948787819] [2025-01-10 06:33:37,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948787819] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:37,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:33:37,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:33:37,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453366293] [2025-01-10 06:33:37,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:37,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:33:37,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:37,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:33:37,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:33:37,209 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-01-10 06:33:37,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:37,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:37,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-01-10 06:33:37,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:37,523 INFO L124 PetriNetUnfolderBase]: 730/1443 cut-off events. [2025-01-10 06:33:37,524 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2025-01-10 06:33:37,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1443 events. 730/1443 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7593 event pairs, 224 based on Foata normal form. 40/1335 useless extension candidates. Maximal degree in co-relation 2570. Up to 692 conditions per place. [2025-01-10 06:33:37,535 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 58 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2025-01-10 06:33:37,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 298 flow [2025-01-10 06:33:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:33:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:33:37,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2025-01-10 06:33:37,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2025-01-10 06:33:37,545 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 132 transitions. [2025-01-10 06:33:37,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 298 flow [2025-01-10 06:33:37,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 289 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:33:37,550 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 128 flow [2025-01-10 06:33:37,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2025-01-10 06:33:37,554 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-01-10 06:33:37,554 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 128 flow [2025-01-10 06:33:37,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:37,555 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:37,555 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:33:37,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:33:37,555 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:37,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1537338169, now seen corresponding path program 1 times [2025-01-10 06:33:37,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:37,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274476512] [2025-01-10 06:33:37,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:37,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:33:37,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:33:37,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:37,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:37,668 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 06:33:37,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:37,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274476512] [2025-01-10 06:33:37,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274476512] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:37,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:33:37,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:33:37,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955693345] [2025-01-10 06:33:37,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:37,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:33:37,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:37,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:33:37,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:33:37,679 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-01-10 06:33:37,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:37,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:37,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-01-10 06:33:37,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:38,044 INFO L124 PetriNetUnfolderBase]: 1180/2392 cut-off events. [2025-01-10 06:33:38,044 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2025-01-10 06:33:38,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4819 conditions, 2392 events. 1180/2392 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13833 event pairs, 613 based on Foata normal form. 74/2303 useless extension candidates. Maximal degree in co-relation 4166. Up to 1299 conditions per place. [2025-01-10 06:33:38,062 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2025-01-10 06:33:38,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 399 flow [2025-01-10 06:33:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:33:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:33:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2025-01-10 06:33:38,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2025-01-10 06:33:38,064 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 128 flow. Second operand 4 states and 132 transitions. [2025-01-10 06:33:38,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 399 flow [2025-01-10 06:33:38,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:33:38,067 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 152 flow [2025-01-10 06:33:38,067 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2025-01-10 06:33:38,067 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2025-01-10 06:33:38,067 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 152 flow [2025-01-10 06:33:38,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:38,068 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:38,068 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:33:38,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 06:33:38,068 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:38,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1949287792, now seen corresponding path program 1 times [2025-01-10 06:33:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:38,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048000451] [2025-01-10 06:33:38,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:38,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:38,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:33:38,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:33:38,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:38,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:38,207 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 06:33:38,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:38,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048000451] [2025-01-10 06:33:38,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048000451] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:38,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:33:38,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:33:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864356117] [2025-01-10 06:33:38,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:38,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:33:38,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:38,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:33:38,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:33:38,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-01-10 06:33:38,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 06:33:38,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:38,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-01-10 06:33:38,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:38,571 INFO L124 PetriNetUnfolderBase]: 1703/3321 cut-off events. [2025-01-10 06:33:38,571 INFO L125 PetriNetUnfolderBase]: For 993/1039 co-relation queries the response was YES. [2025-01-10 06:33:38,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7351 conditions, 3321 events. 1703/3321 cut-off events. For 993/1039 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21095 event pairs, 837 based on Foata normal form. 82/3284 useless extension candidates. Maximal degree in co-relation 5256. Up to 1936 conditions per place. [2025-01-10 06:33:38,590 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 72 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2025-01-10 06:33:38,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 439 flow [2025-01-10 06:33:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:33:38,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:33:38,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2025-01-10 06:33:38,591 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2025-01-10 06:33:38,591 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 152 flow. Second operand 4 states and 133 transitions. [2025-01-10 06:33:38,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 439 flow [2025-01-10 06:33:38,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:33:38,594 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2025-01-10 06:33:38,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2025-01-10 06:33:38,595 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2025-01-10 06:33:38,595 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2025-01-10 06:33:38,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 06:33:38,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:38,595 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 06:33:38,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:33:38,596 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:38,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:38,596 INFO L85 PathProgramCache]: Analyzing trace with hash 368252936, now seen corresponding path program 1 times [2025-01-10 06:33:38,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:38,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168738855] [2025-01-10 06:33:38,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:38,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:38,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 06:33:38,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:33:38,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:38,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:38,783 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 06:33:38,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:38,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168738855] [2025-01-10 06:33:38,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168738855] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:38,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:33:38,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:33:38,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98378538] [2025-01-10 06:33:38,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:38,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:33:38,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:38,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:33:38,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:33:38,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2025-01-10 06:33:38,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 06:33:38,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:38,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2025-01-10 06:33:38,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:38,998 INFO L124 PetriNetUnfolderBase]: 898/2002 cut-off events. [2025-01-10 06:33:38,998 INFO L125 PetriNetUnfolderBase]: For 981/1077 co-relation queries the response was YES. [2025-01-10 06:33:39,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 2002 events. 898/2002 cut-off events. For 981/1077 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12004 event pairs, 285 based on Foata normal form. 76/2030 useless extension candidates. Maximal degree in co-relation 3692. Up to 946 conditions per place. [2025-01-10 06:33:39,013 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 46 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2025-01-10 06:33:39,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 334 flow [2025-01-10 06:33:39,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:33:39,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:33:39,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-01-10 06:33:39,015 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-10 06:33:39,016 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 96 transitions. [2025-01-10 06:33:39,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 334 flow [2025-01-10 06:33:39,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-10 06:33:39,026 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 173 flow [2025-01-10 06:33:39,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2025-01-10 06:33:39,027 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2025-01-10 06:33:39,027 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 173 flow [2025-01-10 06:33:39,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 06:33:39,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:39,028 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:33:39,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:33:39,028 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:39,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1289054532, now seen corresponding path program 1 times [2025-01-10 06:33:39,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:39,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312170144] [2025-01-10 06:33:39,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:39,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:39,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:33:39,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:33:39,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:39,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:39,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:39,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312170144] [2025-01-10 06:33:39,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312170144] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:33:39,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965083785] [2025-01-10 06:33:39,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:39,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:39,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:33:39,243 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 06:33:39,244 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 06:33:39,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:33:39,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:33:39,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:39,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:39,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:33:39,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:33:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:39,556 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:33:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965083785] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:39,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:33:39,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:33:39,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71683031] [2025-01-10 06:33:39,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:39,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:33:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:39,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:33:39,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:33:39,569 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:33:39,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 06:33:39,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:39,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:33:39,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:39,956 INFO L124 PetriNetUnfolderBase]: 931/2010 cut-off events. [2025-01-10 06:33:39,956 INFO L125 PetriNetUnfolderBase]: For 1022/1128 co-relation queries the response was YES. [2025-01-10 06:33:39,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 2010 events. 931/2010 cut-off events. For 1022/1128 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11448 event pairs, 189 based on Foata normal form. 70/2023 useless extension candidates. Maximal degree in co-relation 2701. Up to 735 conditions per place. [2025-01-10 06:33:39,973 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 87 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2025-01-10 06:33:39,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 587 flow [2025-01-10 06:33:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:33:39,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:33:39,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2025-01-10 06:33:39,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2025-01-10 06:33:39,975 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 173 flow. Second operand 7 states and 188 transitions. [2025-01-10 06:33:39,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 587 flow [2025-01-10 06:33:39,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:33:39,981 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 229 flow [2025-01-10 06:33:39,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2025-01-10 06:33:39,982 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2025-01-10 06:33:39,982 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 229 flow [2025-01-10 06:33:39,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 06:33:39,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:39,982 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 06:33:39,997 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 06:33:40,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:40,187 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:40,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:40,188 INFO L85 PathProgramCache]: Analyzing trace with hash -620059497, now seen corresponding path program 1 times [2025-01-10 06:33:40,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:40,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523069710] [2025-01-10 06:33:40,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:40,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:40,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:33:40,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:33:40,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:40,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:40,315 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 06:33:40,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:40,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523069710] [2025-01-10 06:33:40,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523069710] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:40,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:33:40,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:33:40,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433356156] [2025-01-10 06:33:40,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:40,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:33:40,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:40,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:33:40,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:33:40,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:33:40,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:40,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:40,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:33:40,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:40,632 INFO L124 PetriNetUnfolderBase]: 1173/2605 cut-off events. [2025-01-10 06:33:40,632 INFO L125 PetriNetUnfolderBase]: For 2091/2209 co-relation queries the response was YES. [2025-01-10 06:33:40,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6743 conditions, 2605 events. 1173/2605 cut-off events. For 2091/2209 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 16492 event pairs, 646 based on Foata normal form. 26/2624 useless extension candidates. Maximal degree in co-relation 5210. Up to 1363 conditions per place. [2025-01-10 06:33:40,649 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 63 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2025-01-10 06:33:40,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 494 flow [2025-01-10 06:33:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:33:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:33:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2025-01-10 06:33:40,650 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2025-01-10 06:33:40,651 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 229 flow. Second operand 4 states and 115 transitions. [2025-01-10 06:33:40,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 494 flow [2025-01-10 06:33:40,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 486 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-01-10 06:33:40,656 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 271 flow [2025-01-10 06:33:40,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2025-01-10 06:33:40,657 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2025-01-10 06:33:40,657 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 271 flow [2025-01-10 06:33:40,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:40,657 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:40,657 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:33:40,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:33:40,657 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:40,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:40,658 INFO L85 PathProgramCache]: Analyzing trace with hash 98439247, now seen corresponding path program 1 times [2025-01-10 06:33:40,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:40,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050784648] [2025-01-10 06:33:40,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:40,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:40,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:33:40,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:33:40,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:40,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:40,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:40,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050784648] [2025-01-10 06:33:40,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050784648] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:33:40,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753339219] [2025-01-10 06:33:40,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:40,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:40,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:33:40,783 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 06:33:40,787 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 06:33:40,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:33:40,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:33:40,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:40,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:40,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:33:40,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:33:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:40,973 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:33:40,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753339219] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:40,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:33:40,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-01-10 06:33:40,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665330805] [2025-01-10 06:33:40,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:40,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:33:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:40,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:33:40,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-01-10 06:33:40,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:33:40,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:40,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:40,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:33:40,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:41,393 INFO L124 PetriNetUnfolderBase]: 1483/2948 cut-off events. [2025-01-10 06:33:41,394 INFO L125 PetriNetUnfolderBase]: For 3260/3346 co-relation queries the response was YES. [2025-01-10 06:33:41,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8046 conditions, 2948 events. 1483/2948 cut-off events. For 3260/3346 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 17501 event pairs, 245 based on Foata normal form. 79/2946 useless extension candidates. Maximal degree in co-relation 6189. Up to 1306 conditions per place. [2025-01-10 06:33:41,412 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 78 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2025-01-10 06:33:41,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 653 flow [2025-01-10 06:33:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:33:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:33:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2025-01-10 06:33:41,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-01-10 06:33:41,415 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 271 flow. Second operand 4 states and 116 transitions. [2025-01-10 06:33:41,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 653 flow [2025-01-10 06:33:41,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:33:41,424 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 275 flow [2025-01-10 06:33:41,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2025-01-10 06:33:41,426 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2025-01-10 06:33:41,426 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 275 flow [2025-01-10 06:33:41,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:41,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:41,426 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:33:41,438 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 06:33:41,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:41,627 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:41,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:41,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1305986079, now seen corresponding path program 1 times [2025-01-10 06:33:41,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:41,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033442396] [2025-01-10 06:33:41,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:41,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:41,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:33:41,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:33:41,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:41,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:41,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:41,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033442396] [2025-01-10 06:33:41,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033442396] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:33:41,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566978147] [2025-01-10 06:33:41,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:41,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:41,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:33:41,795 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 06:33:41,799 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 06:33:41,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:33:41,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:33:41,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:41,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:41,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:33:41,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:33:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:41,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:33:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:42,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566978147] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:33:42,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:33:42,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 06:33:42,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957693272] [2025-01-10 06:33:42,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:33:42,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:33:42,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:42,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:33:42,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:33:42,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:33:42,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 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 06:33:42,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:42,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:33:42,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:42,703 INFO L124 PetriNetUnfolderBase]: 2547/5453 cut-off events. [2025-01-10 06:33:42,704 INFO L125 PetriNetUnfolderBase]: For 8862/9108 co-relation queries the response was YES. [2025-01-10 06:33:42,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15524 conditions, 5453 events. 2547/5453 cut-off events. For 8862/9108 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 35147 event pairs, 407 based on Foata normal form. 151/5603 useless extension candidates. Maximal degree in co-relation 8199. Up to 1167 conditions per place. [2025-01-10 06:33:42,731 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 191 selfloop transitions, 33 changer transitions 0/235 dead transitions. [2025-01-10 06:33:42,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 235 transitions, 1624 flow [2025-01-10 06:33:42,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 06:33:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-10 06:33:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 426 transitions. [2025-01-10 06:33:42,733 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2025-01-10 06:33:42,733 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 275 flow. Second operand 16 states and 426 transitions. [2025-01-10 06:33:42,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 235 transitions, 1624 flow [2025-01-10 06:33:42,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 235 transitions, 1502 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-01-10 06:33:42,747 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 594 flow [2025-01-10 06:33:42,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=594, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2025-01-10 06:33:42,749 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2025-01-10 06:33:42,749 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 594 flow [2025-01-10 06:33:42,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 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 06:33:42,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:42,750 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 06:33:42,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 06:33:42,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:42,951 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:42,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:42,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1321276906, now seen corresponding path program 1 times [2025-01-10 06:33:42,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:42,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954995491] [2025-01-10 06:33:42,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:42,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:42,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 06:33:42,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:33:42,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:42,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:43,065 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 06:33:43,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:43,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954995491] [2025-01-10 06:33:43,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954995491] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:43,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:33:43,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:33:43,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368966104] [2025-01-10 06:33:43,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:43,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:33:43,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:43,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:33:43,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:33:43,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-01-10 06:33:43,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 594 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:43,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:43,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-01-10 06:33:43,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:43,536 INFO L124 PetriNetUnfolderBase]: 2796/5802 cut-off events. [2025-01-10 06:33:43,536 INFO L125 PetriNetUnfolderBase]: For 9962/10299 co-relation queries the response was YES. [2025-01-10 06:33:43,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16734 conditions, 5802 events. 2796/5802 cut-off events. For 9962/10299 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 37103 event pairs, 564 based on Foata normal form. 39/5836 useless extension candidates. Maximal degree in co-relation 13945. Up to 3403 conditions per place. [2025-01-10 06:33:43,571 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 119 selfloop transitions, 13 changer transitions 0/142 dead transitions. [2025-01-10 06:33:43,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 1117 flow [2025-01-10 06:33:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:33:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:33:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2025-01-10 06:33:43,573 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5659722222222222 [2025-01-10 06:33:43,573 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 594 flow. Second operand 6 states and 163 transitions. [2025-01-10 06:33:43,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 1117 flow [2025-01-10 06:33:43,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1075 flow, removed 18 selfloop flow, removed 3 redundant places. [2025-01-10 06:33:43,587 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 653 flow [2025-01-10 06:33:43,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=653, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2025-01-10 06:33:43,588 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2025-01-10 06:33:43,588 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 653 flow [2025-01-10 06:33:43,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:43,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:43,588 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:33:43,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-10 06:33:43,589 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:43,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:43,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1243349362, now seen corresponding path program 1 times [2025-01-10 06:33:43,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:43,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273732121] [2025-01-10 06:33:43,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:43,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:43,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 06:33:43,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:33:43,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:43,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:33:43,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:43,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273732121] [2025-01-10 06:33:43,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273732121] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:43,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:33:43,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:33:43,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923929986] [2025-01-10 06:33:43,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:43,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:33:43,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:43,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:33:43,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:33:43,653 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:33:43,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 653 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 06:33:43,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:43,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:33:43,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:44,171 INFO L124 PetriNetUnfolderBase]: 3062/6447 cut-off events. [2025-01-10 06:33:44,171 INFO L125 PetriNetUnfolderBase]: For 11345/11483 co-relation queries the response was YES. [2025-01-10 06:33:44,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 6447 events. 3062/6447 cut-off events. For 11345/11483 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 42722 event pairs, 581 based on Foata normal form. 0/6446 useless extension candidates. Maximal degree in co-relation 15404. Up to 2690 conditions per place. [2025-01-10 06:33:44,199 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 143 selfloop transitions, 6 changer transitions 0/172 dead transitions. [2025-01-10 06:33:44,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 172 transitions, 1615 flow [2025-01-10 06:33:44,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:33:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:33:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2025-01-10 06:33:44,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-01-10 06:33:44,200 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 653 flow. Second operand 4 states and 116 transitions. [2025-01-10 06:33:44,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 172 transitions, 1615 flow [2025-01-10 06:33:44,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 172 transitions, 1605 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:33:44,216 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 665 flow [2025-01-10 06:33:44,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2025-01-10 06:33:44,217 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2025-01-10 06:33:44,217 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 665 flow [2025-01-10 06:33:44,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 06:33:44,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:44,217 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:33:44,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-10 06:33:44,217 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:44,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:44,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1481988260, now seen corresponding path program 1 times [2025-01-10 06:33:44,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:44,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92001415] [2025-01-10 06:33:44,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:44,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:44,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 06:33:44,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 06:33:44,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:44,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:44,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92001415] [2025-01-10 06:33:44,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92001415] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:33:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187034625] [2025-01-10 06:33:44,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:44,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:44,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:33:44,318 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 06:33:44,325 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 06:33:44,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 06:33:44,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 06:33:44,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:44,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:44,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:33:44,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:33:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:44,497 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:33:44,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187034625] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:44,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:33:44,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-01-10 06:33:44,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101620596] [2025-01-10 06:33:44,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:44,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:33:44,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:44,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:33:44,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-01-10 06:33:44,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:33:44,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 665 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 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 06:33:44,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:44,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:33:44,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:44,940 INFO L124 PetriNetUnfolderBase]: 3167/6166 cut-off events. [2025-01-10 06:33:44,940 INFO L125 PetriNetUnfolderBase]: For 14529/14541 co-relation queries the response was YES. [2025-01-10 06:33:44,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19479 conditions, 6166 events. 3167/6166 cut-off events. For 14529/14541 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 38646 event pairs, 544 based on Foata normal form. 178/6161 useless extension candidates. Maximal degree in co-relation 18617. Up to 3741 conditions per place. [2025-01-10 06:33:44,976 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 96 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2025-01-10 06:33:44,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 1087 flow [2025-01-10 06:33:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:33:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:33:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-01-10 06:33:44,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-01-10 06:33:44,977 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 665 flow. Second operand 4 states and 112 transitions. [2025-01-10 06:33:44,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 1087 flow [2025-01-10 06:33:44,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 123 transitions, 1065 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:33:44,997 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 663 flow [2025-01-10 06:33:44,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=663, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2025-01-10 06:33:44,998 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2025-01-10 06:33:44,998 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 663 flow [2025-01-10 06:33:44,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 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 06:33:44,999 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:44,999 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-10 06:33:45,007 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 06:33:45,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-10 06:33:45,199 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:45,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:45,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1303002939, now seen corresponding path program 1 times [2025-01-10 06:33:45,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:45,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518819105] [2025-01-10 06:33:45,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:45,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:45,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-10 06:33:45,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-10 06:33:45,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:45,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:33:45,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:45,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518819105] [2025-01-10 06:33:45,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518819105] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:45,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:33:45,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:33:45,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929042215] [2025-01-10 06:33:45,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:45,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:33:45,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:45,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:33:45,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:33:45,284 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:33:45,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 06:33:45,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:45,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:33:45,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:45,740 INFO L124 PetriNetUnfolderBase]: 2926/5852 cut-off events. [2025-01-10 06:33:45,740 INFO L125 PetriNetUnfolderBase]: For 12875/12900 co-relation queries the response was YES. [2025-01-10 06:33:45,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18203 conditions, 5852 events. 2926/5852 cut-off events. For 12875/12900 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 36491 event pairs, 615 based on Foata normal form. 178/6027 useless extension candidates. Maximal degree in co-relation 15480. Up to 2981 conditions per place. [2025-01-10 06:33:45,769 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 107 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2025-01-10 06:33:45,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 135 transitions, 1215 flow [2025-01-10 06:33:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:33:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:33:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2025-01-10 06:33:45,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-01-10 06:33:45,771 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 663 flow. Second operand 4 states and 116 transitions. [2025-01-10 06:33:45,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 135 transitions, 1215 flow [2025-01-10 06:33:45,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 135 transitions, 1205 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:33:45,787 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 669 flow [2025-01-10 06:33:45,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=669, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2025-01-10 06:33:45,788 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2025-01-10 06:33:45,788 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 669 flow [2025-01-10 06:33:45,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 06:33:45,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:45,788 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 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 06:33:45,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-10 06:33:45,788 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:45,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:45,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1856794222, now seen corresponding path program 1 times [2025-01-10 06:33:45,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:45,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790870495] [2025-01-10 06:33:45,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:45,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:45,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 06:33:45,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 06:33:45,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:45,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:45,873 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 06:33:45,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:45,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790870495] [2025-01-10 06:33:45,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790870495] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:45,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:33:45,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:33:45,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633594200] [2025-01-10 06:33:45,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:45,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:33:45,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:45,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:33:45,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:33:45,885 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-01-10 06:33:45,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 669 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:45,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:45,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-01-10 06:33:45,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:46,516 INFO L124 PetriNetUnfolderBase]: 2862/5764 cut-off events. [2025-01-10 06:33:46,517 INFO L125 PetriNetUnfolderBase]: For 14686/14686 co-relation queries the response was YES. [2025-01-10 06:33:46,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18439 conditions, 5764 events. 2862/5764 cut-off events. For 14686/14686 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 36265 event pairs, 455 based on Foata normal form. 104/5863 useless extension candidates. Maximal degree in co-relation 15447. Up to 3054 conditions per place. [2025-01-10 06:33:46,565 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 85 selfloop transitions, 35 changer transitions 0/129 dead transitions. [2025-01-10 06:33:46,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 1104 flow [2025-01-10 06:33:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:33:46,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:33:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2025-01-10 06:33:46,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2025-01-10 06:33:46,567 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 669 flow. Second operand 7 states and 162 transitions. [2025-01-10 06:33:46,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 1104 flow [2025-01-10 06:33:46,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 129 transitions, 1080 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-01-10 06:33:46,583 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 752 flow [2025-01-10 06:33:46,583 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2025-01-10 06:33:46,583 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2025-01-10 06:33:46,583 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 752 flow [2025-01-10 06:33:46,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:46,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:46,584 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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 06:33:46,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-10 06:33:46,584 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:46,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:46,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1157764233, now seen corresponding path program 1 times [2025-01-10 06:33:46,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:46,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747031599] [2025-01-10 06:33:46,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:46,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:46,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 06:33:46,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 06:33:46,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:46,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:46,715 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 06:33:46,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:46,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747031599] [2025-01-10 06:33:46,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747031599] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:33:46,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:33:46,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 06:33:46,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817285752] [2025-01-10 06:33:46,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:33:46,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 06:33:46,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:46,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 06:33:46,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:33:46,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-01-10 06:33:46,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 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 06:33:46,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:46,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-01-10 06:33:46,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:47,286 INFO L124 PetriNetUnfolderBase]: 3126/6311 cut-off events. [2025-01-10 06:33:47,286 INFO L125 PetriNetUnfolderBase]: For 19709/19709 co-relation queries the response was YES. [2025-01-10 06:33:47,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20393 conditions, 6311 events. 3126/6311 cut-off events. For 19709/19709 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 40255 event pairs, 622 based on Foata normal form. 76/6382 useless extension candidates. Maximal degree in co-relation 17365. Up to 3339 conditions per place. [2025-01-10 06:33:47,328 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 132 selfloop transitions, 17 changer transitions 6/164 dead transitions. [2025-01-10 06:33:47,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 164 transitions, 1455 flow [2025-01-10 06:33:47,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:33:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:33:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2025-01-10 06:33:47,331 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2025-01-10 06:33:47,331 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 752 flow. Second operand 8 states and 207 transitions. [2025-01-10 06:33:47,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 164 transitions, 1455 flow [2025-01-10 06:33:47,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 164 transitions, 1435 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-01-10 06:33:47,374 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 873 flow [2025-01-10 06:33:47,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=873, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2025-01-10 06:33:47,376 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2025-01-10 06:33:47,376 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 873 flow [2025-01-10 06:33:47,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 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 06:33:47,376 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:47,376 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:33:47,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-10 06:33:47,380 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:47,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:47,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1237771820, now seen corresponding path program 1 times [2025-01-10 06:33:47,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:47,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946926129] [2025-01-10 06:33:47,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:47,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:47,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 06:33:47,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 06:33:47,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:47,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:47,662 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 06:33:47,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946926129] [2025-01-10 06:33:47,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946926129] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:33:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262455248] [2025-01-10 06:33:47,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:47,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:47,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:33:47,673 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 06:33:47,675 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 06:33:47,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 06:33:47,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 06:33:47,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:47,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:47,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 06:33:47,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:33:47,892 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 06:33:47,892 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:33:47,977 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 06:33:47,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262455248] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:33:47,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:33:47,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-01-10 06:33:47,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255864981] [2025-01-10 06:33:47,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:33:47,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 06:33:47,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:47,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 06:33:47,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-01-10 06:33:48,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-01-10 06:33:48,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 873 flow. Second operand has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 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 06:33:48,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:48,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-01-10 06:33:48,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:49,116 INFO L124 PetriNetUnfolderBase]: 3465/7035 cut-off events. [2025-01-10 06:33:49,116 INFO L125 PetriNetUnfolderBase]: For 25302/25302 co-relation queries the response was YES. [2025-01-10 06:33:49,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23114 conditions, 7035 events. 3465/7035 cut-off events. For 25302/25302 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 46502 event pairs, 609 based on Foata normal form. 176/7206 useless extension candidates. Maximal degree in co-relation 20222. Up to 1682 conditions per place. [2025-01-10 06:33:49,172 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 174 selfloop transitions, 58 changer transitions 18/259 dead transitions. [2025-01-10 06:33:49,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 259 transitions, 2200 flow [2025-01-10 06:33:49,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-10 06:33:49,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-10 06:33:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 426 transitions. [2025-01-10 06:33:49,175 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2025-01-10 06:33:49,175 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 873 flow. Second operand 18 states and 426 transitions. [2025-01-10 06:33:49,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 259 transitions, 2200 flow [2025-01-10 06:33:49,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 259 transitions, 2178 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-01-10 06:33:49,215 INFO L231 Difference]: Finished difference. Result has 118 places, 98 transitions, 1115 flow [2025-01-10 06:33:49,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1115, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2025-01-10 06:33:49,216 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 72 predicate places. [2025-01-10 06:33:49,216 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 1115 flow [2025-01-10 06:33:49,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 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 06:33:49,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:49,217 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2025-01-10 06:33:49,227 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 06:33:49,417 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,SelfDestructingSolverStorable14 [2025-01-10 06:33:49,418 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:49,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:49,418 INFO L85 PathProgramCache]: Analyzing trace with hash 567330283, now seen corresponding path program 2 times [2025-01-10 06:33:49,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:49,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421729186] [2025-01-10 06:33:49,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:33:49,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:49,436 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-01-10 06:33:49,467 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-01-10 06:33:49,468 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:33:49,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:49,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:49,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421729186] [2025-01-10 06:33:49,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421729186] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:33:49,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522549771] [2025-01-10 06:33:49,709 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:33:49,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:49,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:33:49,712 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 06:33:49,714 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 06:33:49,778 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-01-10 06:33:49,893 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-01-10 06:33:49,893 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:33:49,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:49,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 06:33:49,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:33:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:49,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:33:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:50,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522549771] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:33:50,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:33:50,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-01-10 06:33:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746855950] [2025-01-10 06:33:50,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:33:50,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 06:33:50,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:50,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 06:33:50,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-01-10 06:33:50,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:33:50,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 1115 flow. Second operand has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 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 06:33:50,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:50,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:33:50,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:51,630 INFO L124 PetriNetUnfolderBase]: 5099/10505 cut-off events. [2025-01-10 06:33:51,630 INFO L125 PetriNetUnfolderBase]: For 45598/45598 co-relation queries the response was YES. [2025-01-10 06:33:51,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36063 conditions, 10505 events. 5099/10505 cut-off events. For 45598/45598 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 64175 event pairs, 929 based on Foata normal form. 208/10708 useless extension candidates. Maximal degree in co-relation 29035. Up to 2336 conditions per place. [2025-01-10 06:33:51,693 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 349 selfloop transitions, 73 changer transitions 0/431 dead transitions. [2025-01-10 06:33:51,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 431 transitions, 4018 flow [2025-01-10 06:33:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-10 06:33:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-01-10 06:33:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 672 transitions. [2025-01-10 06:33:51,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-01-10 06:33:51,699 INFO L175 Difference]: Start difference. First operand has 118 places, 98 transitions, 1115 flow. Second operand 24 states and 672 transitions. [2025-01-10 06:33:51,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 431 transitions, 4018 flow [2025-01-10 06:33:51,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 431 transitions, 3818 flow, removed 66 selfloop flow, removed 7 redundant places. [2025-01-10 06:33:51,746 INFO L231 Difference]: Finished difference. Result has 138 places, 140 transitions, 1835 flow [2025-01-10 06:33:51,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1835, PETRI_PLACES=138, PETRI_TRANSITIONS=140} [2025-01-10 06:33:51,747 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 92 predicate places. [2025-01-10 06:33:51,747 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 140 transitions, 1835 flow [2025-01-10 06:33:51,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 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 06:33:51,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:51,747 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:33:51,754 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 06:33:51,947 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,SelfDestructingSolverStorable15 [2025-01-10 06:33:51,948 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:51,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2108792439, now seen corresponding path program 2 times [2025-01-10 06:33:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:51,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354788485] [2025-01-10 06:33:51,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:33:51,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:51,964 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 54 statements into 2 equivalence classes. [2025-01-10 06:33:52,000 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 54 of 54 statements. [2025-01-10 06:33:52,000 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:33:52,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:52,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:52,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354788485] [2025-01-10 06:33:52,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354788485] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:33:52,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148448864] [2025-01-10 06:33:52,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:33:52,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:52,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:33:52,211 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 06:33:52,217 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 06:33:52,296 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 54 statements into 2 equivalence classes. [2025-01-10 06:33:52,431 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 54 of 54 statements. [2025-01-10 06:33:52,432 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:33:52,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:52,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 06:33:52,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:33:52,499 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:52,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:33:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:52,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148448864] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:33:52,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:33:52,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2025-01-10 06:33:52,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406997334] [2025-01-10 06:33:52,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:33:52,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 06:33:52,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:52,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 06:33:52,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2025-01-10 06:33:52,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-01-10 06:33:52,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 140 transitions, 1835 flow. Second operand has 18 states, 18 states have (on average 17.11111111111111) internal successors, (308), 18 states have internal predecessors, (308), 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 06:33:52,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:52,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-01-10 06:33:52,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:54,317 INFO L124 PetriNetUnfolderBase]: 6158/12598 cut-off events. [2025-01-10 06:33:54,318 INFO L125 PetriNetUnfolderBase]: For 62164/62164 co-relation queries the response was YES. [2025-01-10 06:33:54,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43572 conditions, 12598 events. 6158/12598 cut-off events. For 62164/62164 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 80574 event pairs, 735 based on Foata normal form. 72/12665 useless extension candidates. Maximal degree in co-relation 40533. Up to 3367 conditions per place. [2025-01-10 06:33:54,467 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 259 selfloop transitions, 96 changer transitions 0/364 dead transitions. [2025-01-10 06:33:54,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 364 transitions, 3851 flow [2025-01-10 06:33:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-10 06:33:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-01-10 06:33:54,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 479 transitions. [2025-01-10 06:33:54,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49895833333333334 [2025-01-10 06:33:54,470 INFO L175 Difference]: Start difference. First operand has 138 places, 140 transitions, 1835 flow. Second operand 20 states and 479 transitions. [2025-01-10 06:33:54,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 364 transitions, 3851 flow [2025-01-10 06:33:54,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 364 transitions, 3705 flow, removed 23 selfloop flow, removed 9 redundant places. [2025-01-10 06:33:54,547 INFO L231 Difference]: Finished difference. Result has 155 places, 169 transitions, 2454 flow [2025-01-10 06:33:54,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2454, PETRI_PLACES=155, PETRI_TRANSITIONS=169} [2025-01-10 06:33:54,548 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 109 predicate places. [2025-01-10 06:33:54,548 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 169 transitions, 2454 flow [2025-01-10 06:33:54,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.11111111111111) internal successors, (308), 18 states have internal predecessors, (308), 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 06:33:54,548 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:54,549 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:33:54,557 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 06:33:54,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:54,749 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:54,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:54,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1598109055, now seen corresponding path program 3 times [2025-01-10 06:33:54,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:54,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818629202] [2025-01-10 06:33:54,751 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:33:54,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:54,776 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 76 statements into 4 equivalence classes. [2025-01-10 06:33:54,977 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 76 of 76 statements. [2025-01-10 06:33:54,977 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-10 06:33:54,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:55,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818629202] [2025-01-10 06:33:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818629202] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:33:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385453126] [2025-01-10 06:33:55,245 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:33:55,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:55,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:33:55,247 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 06:33:55,249 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 06:33:55,321 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 76 statements into 4 equivalence classes. [2025-01-10 06:33:55,569 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 76 of 76 statements. [2025-01-10 06:33:55,569 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-10 06:33:55,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:55,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-10 06:33:55,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:33:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:55,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:33:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:33:55,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385453126] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:33:55,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:33:55,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2025-01-10 06:33:55,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113770507] [2025-01-10 06:33:55,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:33:55,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 06:33:55,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:55,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 06:33:55,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2025-01-10 06:33:55,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-01-10 06:33:55,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 169 transitions, 2454 flow. Second operand has 26 states, 26 states have (on average 17.076923076923077) internal successors, (444), 26 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:55,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:55,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-01-10 06:33:55,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:33:58,236 INFO L124 PetriNetUnfolderBase]: 7794/15854 cut-off events. [2025-01-10 06:33:58,237 INFO L125 PetriNetUnfolderBase]: For 97346/97346 co-relation queries the response was YES. [2025-01-10 06:33:58,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56389 conditions, 15854 events. 7794/15854 cut-off events. For 97346/97346 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 107031 event pairs, 785 based on Foata normal form. 120/15969 useless extension candidates. Maximal degree in co-relation 53274. Up to 2703 conditions per place. [2025-01-10 06:33:58,372 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 356 selfloop transitions, 167 changer transitions 0/532 dead transitions. [2025-01-10 06:33:58,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 532 transitions, 5711 flow [2025-01-10 06:33:58,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-10 06:33:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-01-10 06:33:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 742 transitions. [2025-01-10 06:33:58,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4986559139784946 [2025-01-10 06:33:58,374 INFO L175 Difference]: Start difference. First operand has 155 places, 169 transitions, 2454 flow. Second operand 31 states and 742 transitions. [2025-01-10 06:33:58,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 532 transitions, 5711 flow [2025-01-10 06:33:58,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 532 transitions, 5605 flow, removed 24 selfloop flow, removed 9 redundant places. [2025-01-10 06:33:58,517 INFO L231 Difference]: Finished difference. Result has 184 places, 222 transitions, 3646 flow [2025-01-10 06:33:58,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2343, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3646, PETRI_PLACES=184, PETRI_TRANSITIONS=222} [2025-01-10 06:33:58,518 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 138 predicate places. [2025-01-10 06:33:58,518 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 222 transitions, 3646 flow [2025-01-10 06:33:58,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.076923076923077) internal successors, (444), 26 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:33:58,518 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:33:58,518 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:33:58,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-10 06:33:58,719 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,SelfDestructingSolverStorable17 [2025-01-10 06:33:58,719 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:33:58,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:33:58,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1819727466, now seen corresponding path program 1 times [2025-01-10 06:33:58,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:33:58,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599161530] [2025-01-10 06:33:58,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:58,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:33:58,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-10 06:33:58,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-10 06:33:58,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:58,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-10 06:33:59,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:33:59,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599161530] [2025-01-10 06:33:59,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599161530] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:33:59,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843034624] [2025-01-10 06:33:59,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:33:59,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:33:59,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:33:59,042 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 06:33:59,044 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 06:33:59,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-10 06:33:59,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-10 06:33:59,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:33:59,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:33:59,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-10 06:33:59,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:33:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-10 06:33:59,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:33:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-10 06:33:59,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843034624] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:33:59,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:33:59,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2025-01-10 06:33:59,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813825165] [2025-01-10 06:33:59,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:33:59,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 06:33:59,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:33:59,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 06:33:59,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2025-01-10 06:33:59,519 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-01-10 06:33:59,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 222 transitions, 3646 flow. Second operand has 26 states, 26 states have (on average 17.46153846153846) internal successors, (454), 26 states have internal predecessors, (454), 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 06:33:59,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:33:59,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-01-10 06:33:59,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:34:03,151 INFO L124 PetriNetUnfolderBase]: 11256/22942 cut-off events. [2025-01-10 06:34:03,152 INFO L125 PetriNetUnfolderBase]: For 177176/177176 co-relation queries the response was YES. [2025-01-10 06:34:03,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84601 conditions, 22942 events. 11256/22942 cut-off events. For 177176/177176 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 169060 event pairs, 1201 based on Foata normal form. 220/23157 useless extension candidates. Maximal degree in co-relation 81590. Up to 3933 conditions per place. [2025-01-10 06:34:03,381 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 343 selfloop transitions, 277 changer transitions 0/629 dead transitions. [2025-01-10 06:34:03,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 629 transitions, 8284 flow [2025-01-10 06:34:03,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-10 06:34:03,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-01-10 06:34:03,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 738 transitions. [2025-01-10 06:34:03,383 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48046875 [2025-01-10 06:34:03,383 INFO L175 Difference]: Start difference. First operand has 184 places, 222 transitions, 3646 flow. Second operand 32 states and 738 transitions. [2025-01-10 06:34:03,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 629 transitions, 8284 flow [2025-01-10 06:34:03,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 629 transitions, 8030 flow, removed 87 selfloop flow, removed 10 redundant places. [2025-01-10 06:34:03,669 INFO L231 Difference]: Finished difference. Result has 212 places, 337 transitions, 6221 flow [2025-01-10 06:34:03,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3520, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6221, PETRI_PLACES=212, PETRI_TRANSITIONS=337} [2025-01-10 06:34:03,670 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 166 predicate places. [2025-01-10 06:34:03,670 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 337 transitions, 6221 flow [2025-01-10 06:34:03,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.46153846153846) internal successors, (454), 26 states have internal predecessors, (454), 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 06:34:03,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:34:03,670 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2025-01-10 06:34:03,679 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 06:34:03,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:34:03,871 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:34:03,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:34:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1754297237, now seen corresponding path program 3 times [2025-01-10 06:34:03,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:34:03,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036283218] [2025-01-10 06:34:03,872 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:34:03,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:34:03,904 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 119 statements into 11 equivalence classes. [2025-01-10 06:34:04,145 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 119 of 119 statements. [2025-01-10 06:34:04,146 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-10 06:34:04,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:34:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:34:04,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:34:04,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036283218] [2025-01-10 06:34:04,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036283218] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:34:04,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306385360] [2025-01-10 06:34:04,996 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:34:04,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:34:04,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:34:04,998 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 06:34:05,000 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 06:34:05,093 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 119 statements into 11 equivalence classes. [2025-01-10 06:34:05,968 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 119 of 119 statements. [2025-01-10 06:34:05,969 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-10 06:34:05,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:34:05,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-10 06:34:05,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:34:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:34:06,124 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:34:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:34:06,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306385360] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:34:06,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:34:06,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2025-01-10 06:34:06,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128103684] [2025-01-10 06:34:06,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:34:06,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-01-10 06:34:06,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:34:06,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-01-10 06:34:06,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2025-01-10 06:34:06,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:34:06,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 337 transitions, 6221 flow. Second operand has 48 states, 48 states have (on average 18.770833333333332) internal successors, (901), 48 states have internal predecessors, (901), 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 06:34:06,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:34:06,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:34:06,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:34:13,889 INFO L124 PetriNetUnfolderBase]: 15536/31938 cut-off events. [2025-01-10 06:34:13,889 INFO L125 PetriNetUnfolderBase]: For 280382/280382 co-relation queries the response was YES. [2025-01-10 06:34:14,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118595 conditions, 31938 events. 15536/31938 cut-off events. For 280382/280382 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 221960 event pairs, 4023 based on Foata normal form. 468/32401 useless extension candidates. Maximal degree in co-relation 89068. Up to 11871 conditions per place. [2025-01-10 06:34:14,537 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 840 selfloop transitions, 188 changer transitions 0/1037 dead transitions. [2025-01-10 06:34:14,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1037 transitions, 12625 flow [2025-01-10 06:34:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-10 06:34:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2025-01-10 06:34:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1360 transitions. [2025-01-10 06:34:14,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2025-01-10 06:34:14,541 INFO L175 Difference]: Start difference. First operand has 212 places, 337 transitions, 6221 flow. Second operand 48 states and 1360 transitions. [2025-01-10 06:34:14,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1037 transitions, 12625 flow [2025-01-10 06:34:15,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 1037 transitions, 12421 flow, removed 58 selfloop flow, removed 10 redundant places. [2025-01-10 06:34:15,217 INFO L231 Difference]: Finished difference. Result has 261 places, 413 transitions, 7931 flow [2025-01-10 06:34:15,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5852, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=7931, PETRI_PLACES=261, PETRI_TRANSITIONS=413} [2025-01-10 06:34:15,218 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 215 predicate places. [2025-01-10 06:34:15,218 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 413 transitions, 7931 flow [2025-01-10 06:34:15,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 18.770833333333332) internal successors, (901), 48 states have internal predecessors, (901), 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 06:34:15,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:34:15,218 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:34:15,228 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 06:34:15,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:34:15,423 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:34:15,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:34:15,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1185197949, now seen corresponding path program 4 times [2025-01-10 06:34:15,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:34:15,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254678053] [2025-01-10 06:34:15,425 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:34:15,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:34:15,452 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 120 statements into 2 equivalence classes. [2025-01-10 06:34:15,478 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 120 of 120 statements. [2025-01-10 06:34:15,483 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:34:15,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:34:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:34:16,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:34:16,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254678053] [2025-01-10 06:34:16,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254678053] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:34:16,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361212251] [2025-01-10 06:34:16,265 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:34:16,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:34:16,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:34:16,267 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 06:34:16,272 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 06:34:16,366 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 120 statements into 2 equivalence classes. [2025-01-10 06:34:16,502 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 120 of 120 statements. [2025-01-10 06:34:16,503 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:34:16,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:34:16,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-10 06:34:16,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:34:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:34:16,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:34:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:34:17,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361212251] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:34:17,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:34:17,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 40 [2025-01-10 06:34:17,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995681707] [2025-01-10 06:34:17,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:34:17,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-01-10 06:34:17,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:34:17,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-01-10 06:34:17,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1298, Unknown=0, NotChecked=0, Total=1722 [2025-01-10 06:34:17,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-01-10 06:34:17,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 413 transitions, 7931 flow. Second operand has 42 states, 42 states have (on average 17.047619047619047) internal successors, (716), 42 states have internal predecessors, (716), 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 06:34:17,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:34:17,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-01-10 06:34:17,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:34:28,303 INFO L124 PetriNetUnfolderBase]: 20947/42719 cut-off events. [2025-01-10 06:34:28,303 INFO L125 PetriNetUnfolderBase]: For 428780/428780 co-relation queries the response was YES. [2025-01-10 06:34:29,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160619 conditions, 42719 events. 20947/42719 cut-off events. For 428780/428780 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 312066 event pairs, 2343 based on Foata normal form. 228/42942 useless extension candidates. Maximal degree in co-relation 157044. Up to 7338 conditions per place. [2025-01-10 06:34:29,399 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 654 selfloop transitions, 469 changer transitions 0/1132 dead transitions. [2025-01-10 06:34:29,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 1132 transitions, 15850 flow [2025-01-10 06:34:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-01-10 06:34:29,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2025-01-10 06:34:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 1248 transitions. [2025-01-10 06:34:29,409 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-01-10 06:34:29,409 INFO L175 Difference]: Start difference. First operand has 261 places, 413 transitions, 7931 flow. Second operand 52 states and 1248 transitions. [2025-01-10 06:34:29,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 1132 transitions, 15850 flow [2025-01-10 06:34:30,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 1132 transitions, 15313 flow, removed 115 selfloop flow, removed 17 redundant places. [2025-01-10 06:34:30,713 INFO L231 Difference]: Finished difference. Result has 318 places, 576 transitions, 12132 flow [2025-01-10 06:34:30,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7403, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=12132, PETRI_PLACES=318, PETRI_TRANSITIONS=576} [2025-01-10 06:34:30,714 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 272 predicate places. [2025-01-10 06:34:30,714 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 576 transitions, 12132 flow [2025-01-10 06:34:30,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 17.047619047619047) internal successors, (716), 42 states have internal predecessors, (716), 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 06:34:30,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:34:30,715 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:34:30,724 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 06:34:30,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-01-10 06:34:30,919 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:34:30,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:34:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash 899382858, now seen corresponding path program 2 times [2025-01-10 06:34:30,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:34:30,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305257152] [2025-01-10 06:34:30,920 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:34:30,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:34:30,937 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 121 statements into 2 equivalence classes. [2025-01-10 06:34:30,998 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 121 of 121 statements. [2025-01-10 06:34:30,998 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:34:30,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:34:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 178 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-10 06:34:31,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:34:31,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305257152] [2025-01-10 06:34:31,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305257152] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:34:31,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692765745] [2025-01-10 06:34:31,614 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:34:31,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:34:31,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:34:31,618 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 06:34:31,623 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 06:34:31,719 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 121 statements into 2 equivalence classes. [2025-01-10 06:34:31,838 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 121 of 121 statements. [2025-01-10 06:34:31,838 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:34:31,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:34:31,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-10 06:34:31,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:34:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 178 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-10 06:34:32,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:34:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 178 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-10 06:34:32,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692765745] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:34:32,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:34:32,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2025-01-10 06:34:32,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765003142] [2025-01-10 06:34:32,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:34:32,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-10 06:34:32,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:34:32,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-10 06:34:32,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2025-01-10 06:34:32,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-01-10 06:34:32,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 576 transitions, 12132 flow. Second operand has 36 states, 36 states have (on average 17.27777777777778) internal successors, (622), 36 states have internal predecessors, (622), 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 06:34:32,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:34:32,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-01-10 06:34:32,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:34:49,029 INFO L124 PetriNetUnfolderBase]: 27341/55815 cut-off events. [2025-01-10 06:34:49,029 INFO L125 PetriNetUnfolderBase]: For 649068/649068 co-relation queries the response was YES. [2025-01-10 06:34:50,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217816 conditions, 55815 events. 27341/55815 cut-off events. For 649068/649068 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 435758 event pairs, 2999 based on Foata normal form. 284/56094 useless extension candidates. Maximal degree in co-relation 214184. Up to 9620 conditions per place. [2025-01-10 06:34:50,440 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 576 selfloop transitions, 652 changer transitions 0/1237 dead transitions. [2025-01-10 06:34:50,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1237 transitions, 21363 flow [2025-01-10 06:34:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-01-10 06:34:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-01-10 06:34:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1043 transitions. [2025-01-10 06:34:50,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49384469696969696 [2025-01-10 06:34:50,449 INFO L175 Difference]: Start difference. First operand has 318 places, 576 transitions, 12132 flow. Second operand 44 states and 1043 transitions. [2025-01-10 06:34:50,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1237 transitions, 21363 flow [2025-01-10 06:34:53,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 1237 transitions, 20943 flow, removed 184 selfloop flow, removed 7 redundant places. [2025-01-10 06:34:53,566 INFO L231 Difference]: Finished difference. Result has 371 places, 795 transitions, 18508 flow [2025-01-10 06:34:53,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11692, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=464, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=18508, PETRI_PLACES=371, PETRI_TRANSITIONS=795} [2025-01-10 06:34:53,568 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 325 predicate places. [2025-01-10 06:34:53,568 INFO L471 AbstractCegarLoop]: Abstraction has has 371 places, 795 transitions, 18508 flow [2025-01-10 06:34:53,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 17.27777777777778) internal successors, (622), 36 states have internal predecessors, (622), 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 06:34:53,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:34:53,568 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:34:53,577 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 06:34:53,773 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 06:34:53,773 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-01-10 06:34:53,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:34:53,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1646161751, now seen corresponding path program 3 times [2025-01-10 06:34:53,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:34:53,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432407711] [2025-01-10 06:34:53,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:34:53,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:34:53,797 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 133 statements into 8 equivalence classes. [2025-01-10 06:34:54,002 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 133 of 133 statements. [2025-01-10 06:34:54,002 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-01-10 06:34:54,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:34:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 2 proven. 236 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-10 06:34:54,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:34:54,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432407711] [2025-01-10 06:34:54,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432407711] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:34:54,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638856429] [2025-01-10 06:34:54,532 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:34:54,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:34:54,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:34:54,534 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 06:34:54,535 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 06:34:54,655 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 133 statements into 8 equivalence classes. [2025-01-10 06:34:56,500 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 133 of 133 statements. [2025-01-10 06:34:56,500 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-01-10 06:34:56,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:34:56,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-10 06:34:56,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:34:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 2 proven. 232 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:34:56,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:34:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 2 proven. 232 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:34:56,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638856429] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:34:56,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:34:56,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 32 [2025-01-10 06:34:56,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561871751] [2025-01-10 06:34:56,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:34:56,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-10 06:34:56,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:34:56,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-10 06:34:56,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2025-01-10 06:34:56,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-01-10 06:34:56,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 795 transitions, 18508 flow. Second operand has 34 states, 34 states have (on average 17.529411764705884) internal successors, (596), 34 states have internal predecessors, (596), 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 06:34:56,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:34:56,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-01-10 06:34:56,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand