./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.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-ext/37_stack_lock_p0_vs_concur.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 82435f17481c054c9c5a8a1deca188b6bf36f1a34e751392b5a27cd7180adc30 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:35:10,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:35:10,455 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:35:10,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:35:10,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:35:10,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:35:10,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:35:10,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:35:10,485 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:35:10,485 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:35:10,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:35:10,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:35:10,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:35:10,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:35:10,486 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:35:10,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:35:10,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:35:10,487 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:35:10,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:35:10,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:35:10,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:35:10,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:35:10,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:35:10,487 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:35:10,487 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:35:10,487 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:35:10,487 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:35:10,488 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:35:10,488 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:35:10,488 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:35:10,488 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:35:10,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:35:10,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:35:10,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:35:10,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:35:10,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:35:10,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:35:10,489 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:35:10,489 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:35:10,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:35:10,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:35:10,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:35:10,489 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:35:10,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:35:10,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:35:10,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:35:10,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:35:10,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:35:10,489 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:35:10,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:35:10,489 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 -> 82435f17481c054c9c5a8a1deca188b6bf36f1a34e751392b5a27cd7180adc30 [2025-01-10 06:35:10,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:35:10,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:35:10,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:35:10,720 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:35:10,720 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:35:10,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2025-01-10 06:35:11,906 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3c5d52e14/4d90e480354e47aa8db95811a9378501/FLAG55ef53148 [2025-01-10 06:35:12,200 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:35:12,202 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2025-01-10 06:35:12,218 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3c5d52e14/4d90e480354e47aa8db95811a9378501/FLAG55ef53148 [2025-01-10 06:35:12,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3c5d52e14/4d90e480354e47aa8db95811a9378501 [2025-01-10 06:35:12,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:35:12,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:35:12,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:35:12,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:35:12,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:35:12,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,252 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5989a0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12, skipping insertion in model container [2025-01-10 06:35:12,252 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,285 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:35:12,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:35:12,493 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:35:12,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:35:12,552 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:35:12,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12 WrapperNode [2025-01-10 06:35:12,554 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:35:12,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:35:12,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:35:12,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:35:12,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,586 INFO L138 Inliner]: procedures = 165, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 154 [2025-01-10 06:35:12,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:35:12,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:35:12,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:35:12,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:35:12,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,617 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 5, 1]. The 2 writes are split as follows [0, 0, 2]. [2025-01-10 06:35:12,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,630 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,632 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,638 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,642 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,643 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:35:12,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:35:12,649 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:35:12,649 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:35:12,650 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (1/1) ... [2025-01-10 06:35:12,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:35:12,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:35:12,687 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 06:35:12,690 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 06:35:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:35:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:35:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 06:35:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-01-10 06:35:12,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-01-10 06:35:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:35:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:35:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 06:35:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-10 06:35:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:35:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 06:35:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 06:35:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:35:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:35:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 06:35:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-10 06:35:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:35:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:35:12,713 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 06:35:12,821 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:35:12,822 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:35:13,038 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:35:13,039 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:35:13,346 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:35:13,346 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-10 06:35:13,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:35:13 BoogieIcfgContainer [2025-01-10 06:35:13,346 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:35:13,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:35:13,348 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:35:13,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:35:13,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:35:12" (1/3) ... [2025-01-10 06:35:13,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a06ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:35:13, skipping insertion in model container [2025-01-10 06:35:13,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:12" (2/3) ... [2025-01-10 06:35:13,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a06ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:35:13, skipping insertion in model container [2025-01-10 06:35:13,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:35:13" (3/3) ... [2025-01-10 06:35:13,356 INFO L128 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur.i [2025-01-10 06:35:13,366 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:35:13,367 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 37_stack_lock_p0_vs_concur.i that has 2 procedures, 34 locations, 1 initial locations, 2 loop locations, and 10 error locations. [2025-01-10 06:35:13,367 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:35:13,416 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 06:35:13,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 36 transitions, 76 flow [2025-01-10 06:35:13,471 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2025-01-10 06:35:13,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:35:13,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 2/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 62 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-01-10 06:35:13,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 36 transitions, 76 flow [2025-01-10 06:35:13,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 76 flow [2025-01-10 06:35:13,486 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:35:13,494 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;@68cf8e2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:35:13,495 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-01-10 06:35:13,501 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:35:13,502 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-01-10 06:35:13,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:35:13,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:35:13,503 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:35:13,503 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-01-10 06:35:13,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:35:13,507 INFO L85 PathProgramCache]: Analyzing trace with hash 248305473, now seen corresponding path program 1 times [2025-01-10 06:35:13,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:35:13,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567718041] [2025-01-10 06:35:13,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:35:13,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:35:13,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:35:13,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:35:13,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:35:13,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:35:13,946 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:35:13,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:35:13,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:35:13,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:35:13,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:35:13,998 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:35:13,999 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 06:35:14,000 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-01-10 06:35:14,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2025-01-10 06:35:14,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2025-01-10 06:35:14,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2025-01-10 06:35:14,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2025-01-10 06:35:14,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2025-01-10 06:35:14,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2025-01-10 06:35:14,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:35:14,006 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-10 06:35:14,011 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 06:35:14,011 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-10 06:35:14,041 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 06:35:14,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 144 flow [2025-01-10 06:35:14,064 INFO L124 PetriNetUnfolderBase]: 4/72 cut-off events. [2025-01-10 06:35:14,065 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 06:35:14,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 72 events. 4/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 222 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2025-01-10 06:35:14,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 144 flow [2025-01-10 06:35:14,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 144 flow [2025-01-10 06:35:14,070 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:35:14,072 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;@68cf8e2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:35:14,072 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2025-01-10 06:35:14,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:35:14,079 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-01-10 06:35:14,080 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 06:35:14,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:35:14,080 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 06:35:14,080 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-01-10 06:35:14,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:35:14,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2063615871, now seen corresponding path program 1 times [2025-01-10 06:35:14,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:35:14,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207601064] [2025-01-10 06:35:14,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:35:14,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:35:14,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:35:14,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:35:14,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:35:14,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:35:14,508 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 06:35:14,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:35:14,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207601064] [2025-01-10 06:35:14,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207601064] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:35:14,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:35:14,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:35:14,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969107039] [2025-01-10 06:35:14,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:35:14,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:35:14,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:35:14,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:35:14,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:35:14,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 67 [2025-01-10 06:35:14,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 06:35:14,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:35:14,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 67 [2025-01-10 06:35:14,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:35:14,932 INFO L124 PetriNetUnfolderBase]: 1347/2637 cut-off events. [2025-01-10 06:35:14,935 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2025-01-10 06:35:14,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4871 conditions, 2637 events. 1347/2637 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 15757 event pairs, 558 based on Foata normal form. 0/2233 useless extension candidates. Maximal degree in co-relation 4272. Up to 2146 conditions per place. [2025-01-10 06:35:14,954 INFO L140 encePairwiseOnDemand]: 47/67 looper letters, 39 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2025-01-10 06:35:14,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 225 flow [2025-01-10 06:35:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:35:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:35:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2025-01-10 06:35:14,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6517412935323383 [2025-01-10 06:35:14,968 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 144 flow. Second operand 3 states and 131 transitions. [2025-01-10 06:35:14,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 225 flow [2025-01-10 06:35:14,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 225 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:35:14,978 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 151 flow [2025-01-10 06:35:14,980 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2025-01-10 06:35:14,982 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2025-01-10 06:35:14,982 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 151 flow [2025-01-10 06:35:14,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 06:35:14,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:35:14,983 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-01-10 06:35:14,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 06:35:14,983 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-01-10 06:35:14,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:35:14,984 INFO L85 PathProgramCache]: Analyzing trace with hash -824556865, now seen corresponding path program 1 times [2025-01-10 06:35:14,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:35:14,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167389866] [2025-01-10 06:35:14,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:35:14,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:35:15,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:35:15,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:35:15,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:35:15,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:35:15,201 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:35:15,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:35:15,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:35:15,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:35:15,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:35:15,223 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:35:15,223 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 06:35:15,223 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2025-01-10 06:35:15,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2025-01-10 06:35:15,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2025-01-10 06:35:15,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2025-01-10 06:35:15,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2025-01-10 06:35:15,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2025-01-10 06:35:15,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2025-01-10 06:35:15,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2025-01-10 06:35:15,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2025-01-10 06:35:15,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2025-01-10 06:35:15,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2025-01-10 06:35:15,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2025-01-10 06:35:15,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2025-01-10 06:35:15,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2025-01-10 06:35:15,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2025-01-10 06:35:15,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2025-01-10 06:35:15,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:35:15,225 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 06:35:15,226 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 06:35:15,226 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-01-10 06:35:15,257 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 06:35:15,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 214 flow [2025-01-10 06:35:15,268 INFO L124 PetriNetUnfolderBase]: 6/106 cut-off events. [2025-01-10 06:35:15,268 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-01-10 06:35:15,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 6/106 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 428 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2025-01-10 06:35:15,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 214 flow [2025-01-10 06:35:15,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 98 transitions, 214 flow [2025-01-10 06:35:15,270 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:35:15,271 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;@68cf8e2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:35:15,271 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-01-10 06:35:15,273 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:35:15,273 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-01-10 06:35:15,273 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 06:35:15,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:35:15,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 06:35:15,273 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-01-10 06:35:15,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:35:15,274 INFO L85 PathProgramCache]: Analyzing trace with hash 836456547, now seen corresponding path program 1 times [2025-01-10 06:35:15,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:35:15,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696342524] [2025-01-10 06:35:15,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:35:15,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:35:15,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:35:15,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:35:15,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:35:15,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:35:15,586 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 06:35:15,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:35:15,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696342524] [2025-01-10 06:35:15,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696342524] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:35:15,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:35:15,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:35:15,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266523833] [2025-01-10 06:35:15,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:35:15,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:35:15,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:35:15,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:35:15,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:35:15,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 98 [2025-01-10 06:35:15,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 98 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:35:15,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:35:15,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 98 [2025-01-10 06:35:15,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:35:18,945 INFO L124 PetriNetUnfolderBase]: 34430/54526 cut-off events. [2025-01-10 06:35:18,945 INFO L125 PetriNetUnfolderBase]: For 1613/1613 co-relation queries the response was YES. [2025-01-10 06:35:19,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103189 conditions, 54526 events. 34430/54526 cut-off events. For 1613/1613 co-relation queries the response was YES. Maximal size of possible extension queue 1282. Compared 417824 event pairs, 19607 based on Foata normal form. 0/45795 useless extension candidates. Maximal degree in co-relation 84927. Up to 47482 conditions per place. [2025-01-10 06:35:19,263 INFO L140 encePairwiseOnDemand]: 69/98 looper letters, 57 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2025-01-10 06:35:19,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 336 flow [2025-01-10 06:35:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:35:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:35:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2025-01-10 06:35:19,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2025-01-10 06:35:19,264 INFO L175 Difference]: Start difference. First operand has 99 places, 98 transitions, 214 flow. Second operand 3 states and 192 transitions. [2025-01-10 06:35:19,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 336 flow [2025-01-10 06:35:19,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 332 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-01-10 06:35:19,270 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 222 flow [2025-01-10 06:35:19,271 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2025-01-10 06:35:19,272 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, -10 predicate places. [2025-01-10 06:35:19,272 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 222 flow [2025-01-10 06:35:19,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:35:19,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:35:19,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:35:19,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:35:19,273 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-01-10 06:35:19,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:35:19,274 INFO L85 PathProgramCache]: Analyzing trace with hash -522465275, now seen corresponding path program 1 times [2025-01-10 06:35:19,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:35:19,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299292113] [2025-01-10 06:35:19,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:35:19,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:35:19,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:35:19,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:35:19,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:35:19,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:35:19,688 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 06:35:19,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:35:19,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299292113] [2025-01-10 06:35:19,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299292113] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:35:19,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:35:19,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:35:19,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577503422] [2025-01-10 06:35:19,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:35:19,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:35:19,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:35:19,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:35:19,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:35:19,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2025-01-10 06:35:19,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 06:35:19,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:35:19,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2025-01-10 06:35:19,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:35:23,552 INFO L124 PetriNetUnfolderBase]: 42485/67588 cut-off events. [2025-01-10 06:35:23,552 INFO L125 PetriNetUnfolderBase]: For 3518/3518 co-relation queries the response was YES. [2025-01-10 06:35:23,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139248 conditions, 67588 events. 42485/67588 cut-off events. For 3518/3518 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 539997 event pairs, 14756 based on Foata normal form. 903/57181 useless extension candidates. Maximal degree in co-relation 131839. Up to 54494 conditions per place. [2025-01-10 06:35:23,901 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 120 selfloop transitions, 12 changer transitions 0/161 dead transitions. [2025-01-10 06:35:23,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 161 transitions, 721 flow [2025-01-10 06:35:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:35:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:35:23,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 310 transitions. [2025-01-10 06:35:23,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5272108843537415 [2025-01-10 06:35:23,903 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 222 flow. Second operand 6 states and 310 transitions. [2025-01-10 06:35:23,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 161 transitions, 721 flow [2025-01-10 06:35:23,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 161 transitions, 717 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:35:23,909 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 301 flow [2025-01-10 06:35:23,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2025-01-10 06:35:23,910 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, -3 predicate places. [2025-01-10 06:35:23,910 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 301 flow [2025-01-10 06:35:23,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 06:35:23,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:35:23,910 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-01-10 06:35:23,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:35:23,910 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-01-10 06:35:23,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:35:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1709880128, now seen corresponding path program 1 times [2025-01-10 06:35:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:35:23,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516308374] [2025-01-10 06:35:23,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:35:23,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:35:24,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:35:24,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:35:24,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:35:24,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:35:24,112 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:35:24,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:35:24,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:35:24,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:35:24,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:35:24,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:35:24,127 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 06:35:24,127 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2025-01-10 06:35:24,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2025-01-10 06:35:24,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2025-01-10 06:35:24,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2025-01-10 06:35:24,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2025-01-10 06:35:24,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2025-01-10 06:35:24,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2025-01-10 06:35:24,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2025-01-10 06:35:24,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2025-01-10 06:35:24,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2025-01-10 06:35:24,132 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2025-01-10 06:35:24,132 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2025-01-10 06:35:24,132 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2025-01-10 06:35:24,132 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2025-01-10 06:35:24,132 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2025-01-10 06:35:24,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2025-01-10 06:35:24,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2025-01-10 06:35:24,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2025-01-10 06:35:24,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2025-01-10 06:35:24,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2025-01-10 06:35:24,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2025-01-10 06:35:24,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2025-01-10 06:35:24,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2025-01-10 06:35:24,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2025-01-10 06:35:24,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2025-01-10 06:35:24,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2025-01-10 06:35:24,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:35:24,133 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-01-10 06:35:24,133 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 06:35:24,133 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-01-10 06:35:24,173 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 06:35:24,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 129 transitions, 286 flow [2025-01-10 06:35:24,187 INFO L124 PetriNetUnfolderBase]: 8/140 cut-off events. [2025-01-10 06:35:24,187 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-01-10 06:35:24,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 140 events. 8/140 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 597 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 123. Up to 5 conditions per place. [2025-01-10 06:35:24,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 129 transitions, 286 flow [2025-01-10 06:35:24,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 129 transitions, 286 flow [2025-01-10 06:35:24,192 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:35:24,192 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;@68cf8e2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:35:24,193 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2025-01-10 06:35:24,313 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:35:24,313 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-01-10 06:35:24,313 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 06:35:24,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:35:24,313 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 06:35:24,313 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 06:35:24,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:35:24,313 INFO L85 PathProgramCache]: Analyzing trace with hash 358678595, now seen corresponding path program 1 times [2025-01-10 06:35:24,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:35:24,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625505099] [2025-01-10 06:35:24,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:35:24,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:35:24,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:35:24,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:35:24,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:35:24,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:35:24,616 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 06:35:24,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:35:24,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625505099] [2025-01-10 06:35:24,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625505099] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:35:24,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:35:24,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:35:24,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999798975] [2025-01-10 06:35:24,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:35:24,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:35:24,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:35:24,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:35:24,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:35:24,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 129 [2025-01-10 06:35:24,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 129 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 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 06:35:24,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:35:24,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 129 [2025-01-10 06:35:24,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand