./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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-atomic/peterson.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 6ea11bc1281710e3131473f2a673d7d78c2a42824b03a7d695132107cc74f895 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:15:39,082 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:15:39,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:15:39,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:15:39,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:15:39,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:15:39,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:15:39,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:15:39,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:15:39,139 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:15:39,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:15:39,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:15:39,140 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:15:39,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:15:39,140 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:15:39,140 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:15:39,140 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:15:39,140 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:15:39,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:15:39,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:15:39,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:15:39,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:15:39,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:15:39,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:15:39,141 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:15:39,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:15:39,141 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:15:39,141 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:15:39,141 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:15:39,141 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:15:39,141 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:15:39,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:15:39,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:15:39,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:15:39,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:15:39,142 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:15:39,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:15:39,142 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:15:39,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:15:39,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:15:39,142 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:15:39,142 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:15:39,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:15:39,143 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 -> 6ea11bc1281710e3131473f2a673d7d78c2a42824b03a7d695132107cc74f895 [2025-02-06 04:15:39,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:15:39,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:15:39,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:15:39,406 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:15:39,406 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:15:39,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/peterson.i [2025-02-06 04:15:40,564 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b38179cfb/c964f439b833418890787cd9a32f065b/FLAG3ed929e5e [2025-02-06 04:15:40,886 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:15:40,888 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i [2025-02-06 04:15:40,900 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b38179cfb/c964f439b833418890787cd9a32f065b/FLAG3ed929e5e [2025-02-06 04:15:41,149 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b38179cfb/c964f439b833418890787cd9a32f065b [2025-02-06 04:15:41,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:15:41,152 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:15:41,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:15:41,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:15:41,157 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:15:41,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cdaa3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41, skipping insertion in model container [2025-02-06 04:15:41,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,191 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:15:41,425 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-atomic/peterson.i[32348,32361] [2025-02-06 04:15:41,436 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-atomic/peterson.i[32502,32515] [2025-02-06 04:15:41,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:15:41,454 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:15:41,487 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-atomic/peterson.i[32348,32361] [2025-02-06 04:15:41,492 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-atomic/peterson.i[32502,32515] [2025-02-06 04:15:41,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:15:41,517 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:15:41,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41 WrapperNode [2025-02-06 04:15:41,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:15:41,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:15:41,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:15:41,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:15:41,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,542 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2025-02-06 04:15:41,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:15:41,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:15:41,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:15:41,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:15:41,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,549 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,556 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]. [2025-02-06 04:15:41,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,559 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:15:41,563 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:15:41,563 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:15:41,563 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:15:41,563 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (1/1) ... [2025-02-06 04:15:41,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:15:41,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:41,592 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 04:15:41,596 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 04:15:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2025-02-06 04:15:41,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2025-02-06 04:15:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-06 04:15:41,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-06 04:15:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:15:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:15:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:15:41,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:15:41,617 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 04:15:41,714 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:15:41,715 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:15:41,805 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:15:41,806 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:15:41,856 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:15:41,857 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:15:41,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:15:41 BoogieIcfgContainer [2025-02-06 04:15:41,857 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:15:41,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:15:41,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:15:41,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:15:41,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:15:41" (1/3) ... [2025-02-06 04:15:41,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f229a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:15:41, skipping insertion in model container [2025-02-06 04:15:41,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:41" (2/3) ... [2025-02-06 04:15:41,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f229a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:15:41, skipping insertion in model container [2025-02-06 04:15:41,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:15:41" (3/3) ... [2025-02-06 04:15:41,866 INFO L128 eAbstractionObserver]: Analyzing ICFG peterson.i [2025-02-06 04:15:41,877 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:15:41,879 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG peterson.i that has 3 procedures, 29 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-06 04:15:41,880 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:15:41,920 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 04:15:41,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 32 transitions, 78 flow [2025-02-06 04:15:41,965 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2025-02-06 04:15:41,967 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:15:41,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 4/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-06 04:15:41,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 32 transitions, 78 flow [2025-02-06 04:15:41,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 28 transitions, 65 flow [2025-02-06 04:15:41,975 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:15:41,986 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;@632e8455, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:15:41,986 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-06 04:15:41,991 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:15:41,991 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2025-02-06 04:15:41,991 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:15:41,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:41,992 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:41,992 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 04:15:41,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:41,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1735371916, now seen corresponding path program 1 times [2025-02-06 04:15:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:42,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737825637] [2025-02-06 04:15:42,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:42,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:42,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 04:15:42,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 04:15:42,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:42,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:42,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:42,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737825637] [2025-02-06 04:15:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737825637] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:42,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:42,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:15:42,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926854295] [2025-02-06 04:15:42,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:42,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:15:42,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:42,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:15:42,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:15:42,219 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2025-02-06 04:15:42,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2025-02-06 04:15:42,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:42,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2025-02-06 04:15:42,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:42,335 INFO L124 PetriNetUnfolderBase]: 161/352 cut-off events. [2025-02-06 04:15:42,335 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-02-06 04:15:42,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 352 events. 161/352 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1575 event pairs, 67 based on Foata normal form. 53/402 useless extension candidates. Maximal degree in co-relation 605. Up to 155 conditions per place. [2025-02-06 04:15:42,339 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 22 selfloop transitions, 3 changer transitions 2/35 dead transitions. [2025-02-06 04:15:42,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 136 flow [2025-02-06 04:15:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:15:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:15:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2025-02-06 04:15:42,350 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2025-02-06 04:15:42,352 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 65 flow. Second operand 3 states and 62 transitions. [2025-02-06 04:15:42,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 136 flow [2025-02-06 04:15:42,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 129 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 04:15:42,358 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 76 flow [2025-02-06 04:15:42,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2025-02-06 04:15:42,364 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2025-02-06 04:15:42,366 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 76 flow [2025-02-06 04:15:42,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2025-02-06 04:15:42,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:42,366 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:42,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:15:42,367 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 04:15:42,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:42,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2136196191, now seen corresponding path program 1 times [2025-02-06 04:15:42,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:42,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971567867] [2025-02-06 04:15:42,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:42,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:42,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 04:15:42,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 04:15:42,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:42,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:42,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:42,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971567867] [2025-02-06 04:15:42,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971567867] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:42,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:42,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:15:42,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083516429] [2025-02-06 04:15:42,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:42,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:15:42,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:42,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:15:42,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:15:42,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2025-02-06 04:15:42,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-02-06 04:15:42,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:42,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2025-02-06 04:15:42,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:42,494 INFO L124 PetriNetUnfolderBase]: 167/351 cut-off events. [2025-02-06 04:15:42,494 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2025-02-06 04:15:42,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 351 events. 167/351 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1485 event pairs, 87 based on Foata normal form. 21/371 useless extension candidates. Maximal degree in co-relation 599. Up to 209 conditions per place. [2025-02-06 04:15:42,496 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 20 selfloop transitions, 2 changer transitions 5/35 dead transitions. [2025-02-06 04:15:42,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 147 flow [2025-02-06 04:15:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:15:42,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:15:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2025-02-06 04:15:42,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2025-02-06 04:15:42,498 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 76 flow. Second operand 3 states and 59 transitions. [2025-02-06 04:15:42,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 147 flow [2025-02-06 04:15:42,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 141 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:15:42,499 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 80 flow [2025-02-06 04:15:42,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2025-02-06 04:15:42,500 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2025-02-06 04:15:42,500 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 80 flow [2025-02-06 04:15:42,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-02-06 04:15:42,500 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:42,500 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:42,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:15:42,500 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 04:15:42,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:42,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1972770940, now seen corresponding path program 1 times [2025-02-06 04:15:42,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:42,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329721257] [2025-02-06 04:15:42,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:42,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:42,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 04:15:42,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 04:15:42,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:42,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:42,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:42,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329721257] [2025-02-06 04:15:42,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329721257] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:42,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:42,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:15:42,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707429202] [2025-02-06 04:15:42,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:42,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:15:42,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:42,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:15:42,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:15:42,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2025-02-06 04:15:42,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2025-02-06 04:15:42,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:42,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2025-02-06 04:15:42,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:42,660 INFO L124 PetriNetUnfolderBase]: 172/353 cut-off events. [2025-02-06 04:15:42,661 INFO L125 PetriNetUnfolderBase]: For 94/96 co-relation queries the response was YES. [2025-02-06 04:15:42,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 353 events. 172/353 cut-off events. For 94/96 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1489 event pairs, 62 based on Foata normal form. 20/370 useless extension candidates. Maximal degree in co-relation 625. Up to 140 conditions per place. [2025-02-06 04:15:42,663 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 24 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2025-02-06 04:15:42,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 205 flow [2025-02-06 04:15:42,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:15:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:15:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2025-02-06 04:15:42,667 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6015625 [2025-02-06 04:15:42,667 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 80 flow. Second operand 4 states and 77 transitions. [2025-02-06 04:15:42,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 205 flow [2025-02-06 04:15:42,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:15:42,669 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 126 flow [2025-02-06 04:15:42,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2025-02-06 04:15:42,671 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2025-02-06 04:15:42,671 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 126 flow [2025-02-06 04:15:42,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2025-02-06 04:15:42,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:42,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:42,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:15:42,672 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 04:15:42,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash 131667648, now seen corresponding path program 2 times [2025-02-06 04:15:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:42,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287755952] [2025-02-06 04:15:42,673 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:15:42,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:42,689 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 1 equivalence classes. [2025-02-06 04:15:42,693 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 04:15:42,693 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:15:42,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:42,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:42,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287755952] [2025-02-06 04:15:42,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287755952] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:42,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:42,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:15:42,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414000348] [2025-02-06 04:15:42,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:42,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:15:42,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:42,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:15:42,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:15:42,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2025-02-06 04:15:42,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2025-02-06 04:15:42,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:42,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2025-02-06 04:15:42,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:42,800 INFO L124 PetriNetUnfolderBase]: 145/280 cut-off events. [2025-02-06 04:15:42,800 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2025-02-06 04:15:42,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 280 events. 145/280 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 978 event pairs, 47 based on Foata normal form. 15/294 useless extension candidates. Maximal degree in co-relation 484. Up to 114 conditions per place. [2025-02-06 04:15:42,801 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2025-02-06 04:15:42,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 259 flow [2025-02-06 04:15:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:15:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:15:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2025-02-06 04:15:42,802 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6015625 [2025-02-06 04:15:42,802 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 126 flow. Second operand 4 states and 77 transitions. [2025-02-06 04:15:42,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 259 flow [2025-02-06 04:15:42,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 253 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-02-06 04:15:42,804 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2025-02-06 04:15:42,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=34, 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=4, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2025-02-06 04:15:42,805 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2025-02-06 04:15:42,805 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2025-02-06 04:15:42,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2025-02-06 04:15:42,807 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2025-02-06 04:15:42,807 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-02-06 04:15:42,807 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-02-06 04:15:42,807 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-02-06 04:15:42,808 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-02-06 04:15:42,808 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-02-06 04:15:42,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:15:42,808 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2025-02-06 04:15:42,811 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 04:15:42,812 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 04:15:42,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 04:15:42 BasicIcfg [2025-02-06 04:15:42,815 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 04:15:42,816 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 04:15:42,816 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 04:15:42,816 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 04:15:42,816 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:15:41" (3/4) ... [2025-02-06 04:15:42,817 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 04:15:42,819 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thr2 [2025-02-06 04:15:42,819 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thr1 [2025-02-06 04:15:42,821 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2025-02-06 04:15:42,821 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-02-06 04:15:42,821 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-02-06 04:15:42,821 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-06 04:15:42,865 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 04:15:42,865 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 04:15:42,865 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 04:15:42,866 INFO L158 Benchmark]: Toolchain (without parser) took 1714.11ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 51.3MB in the end (delta: 60.0MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2025-02-06 04:15:42,866 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 201.3MB. Free memory was 124.2MB in the beginning and 123.9MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:15:42,866 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.01ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 92.2MB in the end (delta: 19.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 04:15:42,867 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.95ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 91.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:15:42,867 INFO L158 Benchmark]: Boogie Preprocessor took 19.26ms. Allocated memory is still 142.6MB. Free memory was 91.0MB in the beginning and 89.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:15:42,867 INFO L158 Benchmark]: IcfgBuilder took 294.72ms. Allocated memory is still 142.6MB. Free memory was 89.8MB in the beginning and 72.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 04:15:42,867 INFO L158 Benchmark]: TraceAbstraction took 956.17ms. Allocated memory is still 142.6MB. Free memory was 71.4MB in the beginning and 57.5MB in the end (delta: 14.0MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2025-02-06 04:15:42,868 INFO L158 Benchmark]: Witness Printer took 49.93ms. Allocated memory is still 142.6MB. Free memory was 57.5MB in the beginning and 51.3MB in the end (delta: 6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 04:15:42,869 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 201.3MB. Free memory was 124.2MB in the beginning and 123.9MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.01ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 92.2MB in the end (delta: 19.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.95ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 91.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.26ms. Allocated memory is still 142.6MB. Free memory was 91.0MB in the beginning and 89.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 294.72ms. Allocated memory is still 142.6MB. Free memory was 89.8MB in the beginning and 72.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 956.17ms. Allocated memory is still 142.6MB. Free memory was 71.4MB in the beginning and 57.5MB in the end (delta: 14.0MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * Witness Printer took 49.93ms. Allocated memory is still 142.6MB. Free memory was 57.5MB in the beginning and 51.3MB in the end (delta: 6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 748]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 739]: 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, 51 locations, 6 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: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 207 IncrementalHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 6 mSDtfsCounter, 207 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=3, InterpolantAutomatonStates: 14, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 74 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 04:15:42,884 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