./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/25_stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/25_stack_longer-1.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 22f5e9b8cea3fb6414e4865b1626afaeb55342d9f0f16512cd01a49134cc1f25 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:31:20,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:31:20,507 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:31:20,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:31:20,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:31:20,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:31:20,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:31:20,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:31:20,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:31:20,534 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:31:20,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:31:20,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:31:20,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:31:20,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:31:20,535 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:31:20,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:31:20,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:31:20,536 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:31:20,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:31:20,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:31:20,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:31:20,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:31:20,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:31:20,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:31:20,536 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:31:20,536 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:31:20,536 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:31:20,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:31:20,537 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:31:20,537 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:31:20,537 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:31:20,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:31:20,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:31:20,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:31:20,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:31:20,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:31:20,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:31:20,538 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:31:20,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:31:20,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:31:20,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:31:20,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:31:20,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:31:20,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:31:20,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:31:20,538 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 -> 22f5e9b8cea3fb6414e4865b1626afaeb55342d9f0f16512cd01a49134cc1f25 [2025-02-06 18:31:20,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:31:20,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:31:20,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:31:20,775 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:31:20,775 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:31:20,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/25_stack_longer-1.i [2025-02-06 18:31:21,894 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ec9a13a53/59c8f04f03c84a7384b52e2e47d771c0/FLAG96979983e [2025-02-06 18:31:22,190 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:31:22,190 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i [2025-02-06 18:31:22,203 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ec9a13a53/59c8f04f03c84a7384b52e2e47d771c0/FLAG96979983e [2025-02-06 18:31:22,217 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ec9a13a53/59c8f04f03c84a7384b52e2e47d771c0 [2025-02-06 18:31:22,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:31:22,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:31:22,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:31:22,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:31:22,227 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:31:22,228 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@169ff71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22, skipping insertion in model container [2025-02-06 18:31:22,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,247 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:31:22,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:31:22,519 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:31:22,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:31:22,612 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:31:22,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22 WrapperNode [2025-02-06 18:31:22,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:31:22,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:31:22,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:31:22,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:31:22,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,675 INFO L138 Inliner]: procedures = 171, calls = 36, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 779 [2025-02-06 18:31:22,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:31:22,679 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:31:22,679 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:31:22,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:31:22,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,693 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,721 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2025-02-06 18:31:22,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,743 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:31:22,767 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:31:22,767 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:31:22,767 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:31:22,768 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (1/1) ... [2025-02-06 18:31:22,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:31:22,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:22,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:31:22,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:31:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-06 18:31:22,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-06 18:31:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:31:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:31:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:31:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:31:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:31:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 18:31:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:31:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:31:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:31:22,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:31:22,818 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:31:22,912 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:31:22,914 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:31:23,497 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:31:23,497 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:31:37,648 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:31:37,649 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:31:37,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:31:37 BoogieIcfgContainer [2025-02-06 18:31:37,649 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:31:37,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:31:37,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:31:37,656 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:31:37,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:31:22" (1/3) ... [2025-02-06 18:31:37,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3451b63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:31:37, skipping insertion in model container [2025-02-06 18:31:37,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:22" (2/3) ... [2025-02-06 18:31:37,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3451b63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:31:37, skipping insertion in model container [2025-02-06 18:31:37,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:31:37" (3/3) ... [2025-02-06 18:31:37,660 INFO L128 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-1.i [2025-02-06 18:31:37,672 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:31:37,674 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 25_stack_longer-1.i that has 2 procedures, 50 locations, 1 initial locations, 2 loop locations, and 10 error locations. [2025-02-06 18:31:37,674 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:31:37,804 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:31:37,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 54 transitions, 112 flow [2025-02-06 18:31:37,932 INFO L124 PetriNetUnfolderBase]: 4/56 cut-off events. [2025-02-06 18:31:37,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:37,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 56 events. 4/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2025-02-06 18:31:37,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 54 transitions, 112 flow [2025-02-06 18:31:37,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 54 transitions, 112 flow [2025-02-06 18:31:37,950 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:31:37,959 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;@7a0abc31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:31:37,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-06 18:31:38,112 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:31:38,113 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-06 18:31:38,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:38,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:38,114 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:31:38,114 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:31:38,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:38,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1190152547, now seen corresponding path program 1 times [2025-02-06 18:31:38,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:38,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923293058] [2025-02-06 18:31:38,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:38,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms