./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe036.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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-wmm/safe036.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1118c32f43b2d6844c8e6b0e5b4fae8199d058f7b991e3c8d975cf675dc5221a --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:31:28,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:31:28,420 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:31:28,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:31:28,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:31:28,438 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:31:28,439 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:31:28,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:31:28,439 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:31:28,439 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:31:28,439 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:31:28,439 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:31:28,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:31:28,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:31:28,440 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:31:28,440 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:31:28,440 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:31:28,440 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:31:28,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:31:28,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:31:28,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:31:28,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:31:28,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:31:28,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:31:28,441 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:31:28,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:31:28,441 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:31:28,441 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:31:28,441 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:31:28,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:31:28,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:31:28,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:31:28,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:31:28,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:31:28,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:31:28,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:31:28,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:31:28,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:31:28,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:31:28,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:31:28,442 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:31:28,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:31:28,442 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:31:28,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:31:28,442 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:31:28,442 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:31:28,442 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:31:28,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:31:28,442 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 ! call(reach_error())) ) 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 -> 1118c32f43b2d6844c8e6b0e5b4fae8199d058f7b991e3c8d975cf675dc5221a [2025-01-09 16:31:28,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:31:28,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:31:28,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:31:28,640 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:31:28,640 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:31:28,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe036.i [2025-01-09 16:31:29,755 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/864719e32/aeb02119a4754f43bf42c4307af8d8b3/FLAG610aa302b [2025-01-09 16:31:30,081 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:31:30,082 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036.i [2025-01-09 16:31:30,093 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/864719e32/aeb02119a4754f43bf42c4307af8d8b3/FLAG610aa302b [2025-01-09 16:31:30,338 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/864719e32/aeb02119a4754f43bf42c4307af8d8b3 [2025-01-09 16:31:30,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:31:30,345 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:31:30,346 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:31:30,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:31:30,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:31:30,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d4705a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30, skipping insertion in model container [2025-01-09 16:31:30,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,372 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:31:30,472 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036.i[941,954] [2025-01-09 16:31:30,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:31:30,590 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:31:30,598 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036.i[941,954] [2025-01-09 16:31:30,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:31:30,663 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:31:30,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30 WrapperNode [2025-01-09 16:31:30,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:31:30,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:31:30,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:31:30,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:31:30,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,693 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 50 [2025-01-09 16:31:30,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:31:30,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:31:30,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:31:30,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:31:30,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,707 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 16:31:30,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,710 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,712 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:31:30,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:31:30,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:31:30,715 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:31:30,716 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (1/1) ... [2025-01-09 16:31:30,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:31:30,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:31:30,738 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) [2025-01-09 16:31:30,740 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 [2025-01-09 16:31:30,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-09 16:31:30,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:31:30,756 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-01-09 16:31:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-01-09 16:31:30,756 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-01-09 16:31:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-01-09 16:31:30,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:31:30,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-09 16:31:30,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:31:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:31:30,757 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:31:30,938 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:31:30,945 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:31:31,108 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:31:31,108 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:31:31,198 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:31:31,200 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:31:31,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:31:31 BoogieIcfgContainer [2025-01-09 16:31:31,201 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:31:31,203 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:31:31,204 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:31:31,207 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:31:31,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:31:30" (1/3) ... [2025-01-09 16:31:31,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c70d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:31:31, skipping insertion in model container [2025-01-09 16:31:31,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:30" (2/3) ... [2025-01-09 16:31:31,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c70d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:31:31, skipping insertion in model container [2025-01-09 16:31:31,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:31:31" (3/3) ... [2025-01-09 16:31:31,211 INFO L128 eAbstractionObserver]: Analyzing ICFG safe036.i [2025-01-09 16:31:31,223 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:31:31,224 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe036.i that has 3 procedures, 31 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 16:31:31,224 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:31:31,272 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 16:31:31,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 31 transitions, 70 flow [2025-01-09 16:31:31,341 INFO L124 PetriNetUnfolderBase]: 1/29 cut-off events. [2025-01-09 16:31:31,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 16:31:31,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 1/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2025-01-09 16:31:31,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 31 transitions, 70 flow [2025-01-09 16:31:31,349 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 26 transitions, 58 flow [2025-01-09 16:31:31,358 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:31:31,366 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;@30e9554c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:31:31,367 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-09 16:31:31,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:31:31,378 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-01-09 16:31:31,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 16:31:31,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:31:31,379 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:31:31,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:31:31,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:31:31,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1796066353, now seen corresponding path program 1 times [2025-01-09 16:31:31,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:31:31,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184186596] [2025-01-09 16:31:31,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:31:31,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:31:31,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 16:31:31,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 16:31:31,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:31:31,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:31:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:31:31,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:31:31,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184186596] [2025-01-09 16:31:31,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184186596] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:31:31,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:31:31,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:31:31,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325720258] [2025-01-09 16:31:31,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:31:31,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:31:31,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:31:31,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:31:31,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:31:31,858 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 31 [2025-01-09 16:31:31,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:31:31,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:31:31,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 31 [2025-01-09 16:31:31,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:31:31,948 INFO L124 PetriNetUnfolderBase]: 54/154 cut-off events. [2025-01-09 16:31:31,949 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 16:31:31,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 154 events. 54/154 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 605 event pairs, 6 based on Foata normal form. 9/157 useless extension candidates. Maximal degree in co-relation 268. Up to 55 conditions per place. [2025-01-09 16:31:31,952 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 17 selfloop transitions, 4 changer transitions 1/36 dead transitions. [2025-01-09 16:31:31,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 125 flow [2025-01-09 16:31:31,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:31:31,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:31:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2025-01-09 16:31:31,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7419354838709677 [2025-01-09 16:31:31,969 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 58 flow. Second operand 4 states and 92 transitions. [2025-01-09 16:31:31,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 125 flow [2025-01-09 16:31:31,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 16:31:31,980 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 82 flow [2025-01-09 16:31:31,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2025-01-09 16:31:31,985 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2025-01-09 16:31:31,988 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 82 flow [2025-01-09 16:31:31,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:31:31,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:31:31,988 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:31:31,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:31:31,989 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:31:31,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:31:31,989 INFO L85 PathProgramCache]: Analyzing trace with hash 485046764, now seen corresponding path program 1 times [2025-01-09 16:31:31,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:31:31,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314506553] [2025-01-09 16:31:31,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:31:31,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:31:31,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:31:32,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:31:32,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:31:32,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:31:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:31:32,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:31:32,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314506553] [2025-01-09 16:31:32,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314506553] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:31:32,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:31:32,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:31:32,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777526306] [2025-01-09 16:31:32,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:31:32,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:31:32,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:31:32,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:31:32,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:31:32,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 31 [2025-01-09 16:31:32,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:31:32,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:31:32,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 31 [2025-01-09 16:31:32,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:31:32,250 INFO L124 PetriNetUnfolderBase]: 38/109 cut-off events. [2025-01-09 16:31:32,250 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2025-01-09 16:31:32,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 109 events. 38/109 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 285 event pairs, 2 based on Foata normal form. 8/113 useless extension candidates. Maximal degree in co-relation 242. Up to 28 conditions per place. [2025-01-09 16:31:32,252 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 16 selfloop transitions, 6 changer transitions 1/37 dead transitions. [2025-01-09 16:31:32,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 37 transitions, 151 flow [2025-01-09 16:31:32,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:31:32,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:31:32,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2025-01-09 16:31:32,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7096774193548387 [2025-01-09 16:31:32,254 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 82 flow. Second operand 5 states and 110 transitions. [2025-01-09 16:31:32,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 37 transitions, 151 flow [2025-01-09 16:31:32,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 142 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-01-09 16:31:32,255 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 98 flow [2025-01-09 16:31:32,255 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2025-01-09 16:31:32,256 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2025-01-09 16:31:32,256 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 98 flow [2025-01-09 16:31:32,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:31:32,256 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:31:32,256 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:31:32,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:31:32,257 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:31:32,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:31:32,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1406363561, now seen corresponding path program 1 times [2025-01-09 16:31:32,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:31:32,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732794259] [2025-01-09 16:31:32,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:31:32,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:31:32,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 16:31:32,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 16:31:32,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:31:32,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:31:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:31:32,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:31:32,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732794259] [2025-01-09 16:31:32,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732794259] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:31:32,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:31:32,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:31:32,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239028447] [2025-01-09 16:31:32,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:31:32,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:31:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:31:32,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:31:32,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:31:32,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 31 [2025-01-09 16:31:32,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:31:32,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:31:32,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 31 [2025-01-09 16:31:32,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:31:32,548 INFO L124 PetriNetUnfolderBase]: 73/204 cut-off events. [2025-01-09 16:31:32,548 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2025-01-09 16:31:32,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 204 events. 73/204 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 786 event pairs, 22 based on Foata normal form. 4/194 useless extension candidates. Maximal degree in co-relation 451. Up to 84 conditions per place. [2025-01-09 16:31:32,550 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 19 selfloop transitions, 3 changer transitions 8/44 dead transitions. [2025-01-09 16:31:32,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 198 flow [2025-01-09 16:31:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:31:32,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:31:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2025-01-09 16:31:32,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6505376344086021 [2025-01-09 16:31:32,551 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 98 flow. Second operand 6 states and 121 transitions. [2025-01-09 16:31:32,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 198 flow [2025-01-09 16:31:32,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 164 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-01-09 16:31:32,553 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 95 flow [2025-01-09 16:31:32,553 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=95, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2025-01-09 16:31:32,554 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2025-01-09 16:31:32,554 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 95 flow [2025-01-09 16:31:32,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:31:32,554 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:31:32,554 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:31:32,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:31:32,554 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:31:32,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:31:32,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1367405591, now seen corresponding path program 2 times [2025-01-09 16:31:32,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:31:32,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454163718] [2025-01-09 16:31:32,555 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:31:32,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:31:32,563 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-01-09 16:31:32,568 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 16:31:32,568 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:31:32,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:31:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:31:32,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:31:32,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454163718] [2025-01-09 16:31:32,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454163718] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:31:32,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:31:32,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:31:32,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325003691] [2025-01-09 16:31:32,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:31:32,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:31:32,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:31:32,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:31:32,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:31:32,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 31 [2025-01-09 16:31:32,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:31:32,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:31:32,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 31 [2025-01-09 16:31:32,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:31:32,786 INFO L124 PetriNetUnfolderBase]: 65/186 cut-off events. [2025-01-09 16:31:32,786 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2025-01-09 16:31:32,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 186 events. 65/186 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 773 event pairs, 14 based on Foata normal form. 4/177 useless extension candidates. Maximal degree in co-relation 395. Up to 54 conditions per place. [2025-01-09 16:31:32,787 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2025-01-09 16:31:32,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 173 flow [2025-01-09 16:31:32,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:31:32,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:31:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2025-01-09 16:31:32,788 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2025-01-09 16:31:32,788 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 95 flow. Second operand 6 states and 116 transitions. [2025-01-09 16:31:32,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 173 flow [2025-01-09 16:31:32,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 170 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-01-09 16:31:32,790 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2025-01-09 16:31:32,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2025-01-09 16:31:32,790 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2025-01-09 16:31:32,790 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2025-01-09 16:31:32,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:31:32,792 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-01-09 16:31:32,792 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-01-09 16:31:32,792 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-01-09 16:31:32,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:31:32,793 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2025-01-09 16:31:32,795 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-09 16:31:32,795 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 16:31:32,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 04:31:32 BasicIcfg [2025-01-09 16:31:32,799 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 16:31:32,799 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 16:31:32,799 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 16:31:32,799 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 16:31:32,800 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:31:31" (3/4) ... [2025-01-09 16:31:32,801 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 16:31:32,803 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2025-01-09 16:31:32,803 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2025-01-09 16:31:32,805 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2025-01-09 16:31:32,805 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-01-09 16:31:32,805 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-09 16:31:32,805 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 16:31:32,850 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 16:31:32,850 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 16:31:32,850 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 16:31:32,851 INFO L158 Benchmark]: Toolchain (without parser) took 2505.95ms. Allocated memory is still 142.6MB. Free memory was 112.2MB in the beginning and 52.6MB in the end (delta: 59.6MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2025-01-09 16:31:32,852 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 125.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 16:31:32,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.27ms. Allocated memory is still 142.6MB. Free memory was 112.2MB in the beginning and 91.7MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-09 16:31:32,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.50ms. Allocated memory is still 142.6MB. Free memory was 91.7MB in the beginning and 90.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 16:31:32,852 INFO L158 Benchmark]: Boogie Preprocessor took 20.54ms. Allocated memory is still 142.6MB. Free memory was 90.3MB in the beginning and 89.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 16:31:32,852 INFO L158 Benchmark]: RCFGBuilder took 486.45ms. Allocated memory is still 142.6MB. Free memory was 89.0MB in the beginning and 72.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 16:31:32,853 INFO L158 Benchmark]: TraceAbstraction took 1595.68ms. Allocated memory is still 142.6MB. Free memory was 72.2MB in the beginning and 58.2MB in the end (delta: 14.0MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2025-01-09 16:31:32,853 INFO L158 Benchmark]: Witness Printer took 51.23ms. Allocated memory is still 142.6MB. Free memory was 58.2MB in the beginning and 52.6MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 16:31:32,854 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 125.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.27ms. Allocated memory is still 142.6MB. Free memory was 112.2MB in the beginning and 91.7MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.50ms. Allocated memory is still 142.6MB. Free memory was 91.7MB in the beginning and 90.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.54ms. Allocated memory is still 142.6MB. Free memory was 90.3MB in the beginning and 89.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 486.45ms. Allocated memory is still 142.6MB. Free memory was 89.0MB in the beginning and 72.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1595.68ms. Allocated memory is still 142.6MB. Free memory was 72.2MB in the beginning and 58.2MB in the end (delta: 14.0MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Witness Printer took 51.23ms. Allocated memory is still 142.6MB. Free memory was 58.2MB in the beginning and 52.6MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 49 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 264 IncrementalHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 22 mSDtfsCounter, 264 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=2, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 290 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-01-09 16:31:32,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE