./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 f7b74cf7a2419cab3ab4545eb4bb4cb738b0dd565da7b17a0ca0e4253475f1b6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:19:36,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:19:36,561 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:19:36,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:19:36,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:19:36,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:19:36,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:19:36,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:19:36,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:19:36,590 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:19:36,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:19:36,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:19:36,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:19:36,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:19:36,592 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:19:36,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:19:36,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:19:36,592 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:19:36,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:19:36,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:19:36,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:19:36,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:19:36,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:19:36,593 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:19:36,593 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:19:36,593 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:19:36,593 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:19:36,593 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:19:36,593 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:19:36,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:19:36,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:19:36,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:19:36,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:19:36,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:19:36,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:19:36,594 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:19:36,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:19:36,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:19:36,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:19:36,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:19:36,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:19:36,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:19:36,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:19:36,595 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/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 -> f7b74cf7a2419cab3ab4545eb4bb4cb738b0dd565da7b17a0ca0e4253475f1b6 [2025-03-04 02:19:36,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:19:36,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:19:36,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:19:36,843 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:19:36,844 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:19:36,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2025-03-04 02:19:38,109 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6be2a84dd/e9342520cf9344eaab16477bb4804b1a/FLAG31a21421c [2025-03-04 02:19:38,363 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:19:38,366 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2025-03-04 02:19:38,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6be2a84dd/e9342520cf9344eaab16477bb4804b1a/FLAG31a21421c [2025-03-04 02:19:38,386 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6be2a84dd/e9342520cf9344eaab16477bb4804b1a [2025-03-04 02:19:38,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:19:38,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:19:38,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:19:38,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:19:38,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:19:38,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29eb79d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38, skipping insertion in model container [2025-03-04 02:19:38,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:19:38,533 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2553,2566] [2025-03-04 02:19:38,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:19:38,548 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:19:38,563 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2553,2566] [2025-03-04 02:19:38,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:19:38,582 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:19:38,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38 WrapperNode [2025-03-04 02:19:38,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:19:38,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:19:38,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:19:38,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:19:38,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,616 INFO L138 Inliner]: procedures = 22, calls = 15, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 153 [2025-03-04 02:19:38,619 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:19:38,620 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:19:38,620 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:19:38,620 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:19:38,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,629 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,648 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]. [2025-03-04 02:19:38,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,653 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,657 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,664 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:19:38,664 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:19:38,664 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:19:38,664 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:19:38,665 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (1/1) ... [2025-03-04 02:19:38,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:19:38,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:19:38,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 02:19:38,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 02:19:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:19:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 02:19:38,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 02:19:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 02:19:38,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 02:19:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 02:19:38,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 02:19:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:19:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:19:38,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:19:38,724 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 02:19:38,796 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:19:38,798 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:19:39,041 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:19:39,042 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:19:39,304 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:19:39,304 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:19:39,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:19:39 BoogieIcfgContainer [2025-03-04 02:19:39,305 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:19:39,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:19:39,308 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:19:39,312 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:19:39,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:19:38" (1/3) ... [2025-03-04 02:19:39,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44078cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:19:39, skipping insertion in model container [2025-03-04 02:19:39,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:19:38" (2/3) ... [2025-03-04 02:19:39,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44078cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:19:39, skipping insertion in model container [2025-03-04 02:19:39,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:19:39" (3/3) ... [2025-03-04 02:19:39,314 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2025-03-04 02:19:39,327 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:19:39,329 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-simpl-str-trans.wvr.c that has 4 procedures, 20 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-04 02:19:39,329 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:19:39,381 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 02:19:39,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 59 flow [2025-03-04 02:19:39,440 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-04 02:19:39,441 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 02:19:39,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-03-04 02:19:39,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 59 flow [2025-03-04 02:19:39,448 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 15 transitions, 48 flow [2025-03-04 02:19:39,457 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:19:39,467 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;@6554228e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:19:39,467 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-04 02:19:39,492 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:19:39,493 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2025-03-04 02:19:39,494 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 02:19:39,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:19:39,495 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:19:39,495 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-04 02:19:39,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:19:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash 288831072, now seen corresponding path program 1 times [2025-03-04 02:19:39,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:19:39,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855585062] [2025-03-04 02:19:39,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:19:39,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:19:39,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 02:19:39,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 02:19:39,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:19:39,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:19:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:19:40,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:19:40,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855585062] [2025-03-04 02:19:40,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855585062] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:19:40,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:19:40,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:19:40,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961399041] [2025-03-04 02:19:40,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:19:40,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:19:40,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:19:40,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:19:40,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:19:40,387 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2025-03-04 02:19:40,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 48 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2025-03-04 02:19:40,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:19:40,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2025-03-04 02:19:40,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:19:40,590 INFO L124 PetriNetUnfolderBase]: 32/85 cut-off events. [2025-03-04 02:19:40,591 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-04 02:19:40,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 85 events. 32/85 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 1 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 145. Up to 34 conditions per place. [2025-03-04 02:19:40,597 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 26 selfloop transitions, 6 changer transitions 5/38 dead transitions. [2025-03-04 02:19:40,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 198 flow [2025-03-04 02:19:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:19:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:19:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2025-03-04 02:19:40,612 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2025-03-04 02:19:40,613 INFO L175 Difference]: Start difference. First operand has 25 places, 15 transitions, 48 flow. Second operand 6 states and 62 transitions. [2025-03-04 02:19:40,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 198 flow [2025-03-04 02:19:40,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-04 02:19:40,625 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 69 flow [2025-03-04 02:19:40,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2025-03-04 02:19:40,629 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2025-03-04 02:19:40,630 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 69 flow [2025-03-04 02:19:40,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2025-03-04 02:19:40,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:19:40,630 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:19:40,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 02:19:40,631 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-04 02:19:40,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:19:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1820507048, now seen corresponding path program 2 times [2025-03-04 02:19:40,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:19:40,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759045842] [2025-03-04 02:19:40,631 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 02:19:40,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:19:40,640 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 1 equivalence classes. [2025-03-04 02:19:40,649 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 02:19:40,649 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 02:19:40,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:19:40,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:19:40,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:19:40,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759045842] [2025-03-04 02:19:40,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759045842] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:19:40,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:19:40,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:19:40,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245659707] [2025-03-04 02:19:40,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:19:40,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:19:40,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:19:40,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:19:40,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:19:40,933 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2025-03-04 02:19:40,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2025-03-04 02:19:40,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:19:40,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2025-03-04 02:19:40,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:19:41,094 INFO L124 PetriNetUnfolderBase]: 31/97 cut-off events. [2025-03-04 02:19:41,094 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2025-03-04 02:19:41,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 97 events. 31/97 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 314 event pairs, 4 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 256. Up to 46 conditions per place. [2025-03-04 02:19:41,095 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 26 selfloop transitions, 7 changer transitions 8/42 dead transitions. [2025-03-04 02:19:41,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 220 flow [2025-03-04 02:19:41,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:19:41,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:19:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2025-03-04 02:19:41,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2025-03-04 02:19:41,096 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 69 flow. Second operand 6 states and 63 transitions. [2025-03-04 02:19:41,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 220 flow [2025-03-04 02:19:41,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 216 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-04 02:19:41,098 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 92 flow [2025-03-04 02:19:41,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2025-03-04 02:19:41,099 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2025-03-04 02:19:41,100 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 92 flow [2025-03-04 02:19:41,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2025-03-04 02:19:41,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:19:41,100 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:19:41,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 02:19:41,100 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-04 02:19:41,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:19:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1595029928, now seen corresponding path program 3 times [2025-03-04 02:19:41,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:19:41,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982601146] [2025-03-04 02:19:41,100 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 02:19:41,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:19:41,114 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 1 equivalence classes. [2025-03-04 02:19:41,121 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 02:19:41,121 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 02:19:41,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:19:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:19:41,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:19:41,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982601146] [2025-03-04 02:19:41,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982601146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:19:41,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:19:41,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:19:41,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873650945] [2025-03-04 02:19:41,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:19:41,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:19:41,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:19:41,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:19:41,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:19:41,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2025-03-04 02:19:41,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2025-03-04 02:19:41,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:19:41,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2025-03-04 02:19:41,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:19:41,667 INFO L124 PetriNetUnfolderBase]: 27/83 cut-off events. [2025-03-04 02:19:41,667 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2025-03-04 02:19:41,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 83 events. 27/83 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 241 event pairs, 1 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 262. Up to 38 conditions per place. [2025-03-04 02:19:41,668 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 23 selfloop transitions, 6 changer transitions 9/39 dead transitions. [2025-03-04 02:19:41,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 228 flow [2025-03-04 02:19:41,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:19:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:19:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2025-03-04 02:19:41,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2025-03-04 02:19:41,669 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 92 flow. Second operand 6 states and 62 transitions. [2025-03-04 02:19:41,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 228 flow [2025-03-04 02:19:41,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 213 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-04 02:19:41,672 INFO L231 Difference]: Finished difference. Result has 36 places, 19 transitions, 96 flow [2025-03-04 02:19:41,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2025-03-04 02:19:41,673 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2025-03-04 02:19:41,673 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 19 transitions, 96 flow [2025-03-04 02:19:41,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2025-03-04 02:19:41,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:19:41,673 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:19:41,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 02:19:41,673 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-04 02:19:41,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:19:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1619153594, now seen corresponding path program 4 times [2025-03-04 02:19:41,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:19:41,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550704074] [2025-03-04 02:19:41,674 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 02:19:41,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:19:41,684 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-03-04 02:19:41,689 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 02:19:41,690 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 02:19:41,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:19:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:19:41,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:19:41,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550704074] [2025-03-04 02:19:41,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550704074] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:19:41,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:19:41,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:19:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166021281] [2025-03-04 02:19:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:19:41,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:19:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:19:41,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:19:41,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:19:41,896 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2025-03-04 02:19:41,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 19 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2025-03-04 02:19:41,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:19:41,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2025-03-04 02:19:41,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:19:42,017 INFO L124 PetriNetUnfolderBase]: 14/47 cut-off events. [2025-03-04 02:19:42,018 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2025-03-04 02:19:42,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 47 events. 14/47 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 1 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2025-03-04 02:19:42,019 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 16 selfloop transitions, 4 changer transitions 8/29 dead transitions. [2025-03-04 02:19:42,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 177 flow [2025-03-04 02:19:42,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:19:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:19:42,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2025-03-04 02:19:42,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2025-03-04 02:19:42,020 INFO L175 Difference]: Start difference. First operand has 36 places, 19 transitions, 96 flow. Second operand 6 states and 51 transitions. [2025-03-04 02:19:42,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 177 flow [2025-03-04 02:19:42,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 156 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-04 02:19:42,021 INFO L231 Difference]: Finished difference. Result has 34 places, 17 transitions, 71 flow [2025-03-04 02:19:42,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=34, PETRI_TRANSITIONS=17} [2025-03-04 02:19:42,021 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2025-03-04 02:19:42,021 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 17 transitions, 71 flow [2025-03-04 02:19:42,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2025-03-04 02:19:42,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:19:42,022 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:19:42,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 02:19:42,022 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-04 02:19:42,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:19:42,022 INFO L85 PathProgramCache]: Analyzing trace with hash -157905044, now seen corresponding path program 5 times [2025-03-04 02:19:42,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:19:42,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977959466] [2025-03-04 02:19:42,022 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 02:19:42,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:19:42,029 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 1 equivalence classes. [2025-03-04 02:19:42,035 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 02:19:42,035 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 02:19:42,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:19:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:19:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:19:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977959466] [2025-03-04 02:19:42,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977959466] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:19:42,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:19:42,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:19:42,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627006396] [2025-03-04 02:19:42,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:19:42,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:19:42,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:19:42,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:19:42,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:19:42,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2025-03-04 02:19:42,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 17 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2025-03-04 02:19:42,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:19:42,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2025-03-04 02:19:42,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:19:42,459 INFO L124 PetriNetUnfolderBase]: 8/37 cut-off events. [2025-03-04 02:19:42,460 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2025-03-04 02:19:42,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 37 events. 8/37 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 116. Up to 17 conditions per place. [2025-03-04 02:19:42,461 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 13 selfloop transitions, 3 changer transitions 10/27 dead transitions. [2025-03-04 02:19:42,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 154 flow [2025-03-04 02:19:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:19:42,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:19:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2025-03-04 02:19:42,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2025-03-04 02:19:42,464 INFO L175 Difference]: Start difference. First operand has 34 places, 17 transitions, 71 flow. Second operand 6 states and 51 transitions. [2025-03-04 02:19:42,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 154 flow [2025-03-04 02:19:42,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 132 flow, removed 2 selfloop flow, removed 7 redundant places. [2025-03-04 02:19:42,466 INFO L231 Difference]: Finished difference. Result has 32 places, 15 transitions, 55 flow [2025-03-04 02:19:42,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=55, PETRI_PLACES=32, PETRI_TRANSITIONS=15} [2025-03-04 02:19:42,466 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2025-03-04 02:19:42,468 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 15 transitions, 55 flow [2025-03-04 02:19:42,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2025-03-04 02:19:42,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:19:42,468 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:19:42,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 02:19:42,468 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-04 02:19:42,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:19:42,469 INFO L85 PathProgramCache]: Analyzing trace with hash 697401610, now seen corresponding path program 6 times [2025-03-04 02:19:42,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:19:42,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997729248] [2025-03-04 02:19:42,469 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 02:19:42,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:19:42,478 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 1 equivalence classes. [2025-03-04 02:19:42,485 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 02:19:42,488 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-04 02:19:42,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:19:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:19:42,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:19:42,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997729248] [2025-03-04 02:19:42,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997729248] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:19:42,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:19:42,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:19:42,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849892349] [2025-03-04 02:19:42,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:19:42,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:19:42,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:19:42,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:19:42,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:19:42,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2025-03-04 02:19:42,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 15 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2025-03-04 02:19:42,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:19:42,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2025-03-04 02:19:42,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:19:42,768 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2025-03-04 02:19:42,769 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-04 02:19:42,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 19 events. 3/19 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 60. Up to 7 conditions per place. [2025-03-04 02:19:42,769 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2025-03-04 02:19:42,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 16 transitions, 87 flow [2025-03-04 02:19:42,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:19:42,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:19:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 41 transitions. [2025-03-04 02:19:42,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35964912280701755 [2025-03-04 02:19:42,770 INFO L175 Difference]: Start difference. First operand has 32 places, 15 transitions, 55 flow. Second operand 6 states and 41 transitions. [2025-03-04 02:19:42,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 16 transitions, 87 flow [2025-03-04 02:19:42,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 16 transitions, 74 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-03-04 02:19:42,770 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2025-03-04 02:19:42,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2025-03-04 02:19:42,771 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2025-03-04 02:19:42,771 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2025-03-04 02:19:42,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2025-03-04 02:19:42,775 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-03-04 02:19:42,775 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-03-04 02:19:42,775 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-04 02:19:42,775 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-04 02:19:42,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 02:19:42,776 INFO L422 BasicCegarLoop]: Path program histogram: [6] [2025-03-04 02:19:42,779 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 02:19:42,779 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 02:19:42,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 02:19:42 BasicIcfg [2025-03-04 02:19:42,785 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 02:19:42,786 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 02:19:42,786 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 02:19:42,786 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 02:19:42,786 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:19:39" (3/4) ... [2025-03-04 02:19:42,788 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 02:19:42,791 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-04 02:19:42,791 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-04 02:19:42,791 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-04 02:19:42,794 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2025-03-04 02:19:42,796 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2025-03-04 02:19:42,796 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-04 02:19:42,796 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 02:19:42,857 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 02:19:42,858 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 02:19:42,858 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 02:19:42,859 INFO L158 Benchmark]: Toolchain (without parser) took 4468.34ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 133.3MB in the beginning and 73.6MB in the end (delta: 59.7MB). Peak memory consumption was 98.4MB. Max. memory is 16.1GB. [2025-03-04 02:19:42,859 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 02:19:42,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.09ms. Allocated memory is still 167.8MB. Free memory was 132.9MB in the beginning and 121.1MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 02:19:42,860 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.04ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 119.6MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 02:19:42,861 INFO L158 Benchmark]: Boogie Preprocessor took 43.68ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 117.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 02:19:42,861 INFO L158 Benchmark]: IcfgBuilder took 640.56ms. Allocated memory is still 167.8MB. Free memory was 117.8MB in the beginning and 60.9MB in the end (delta: 56.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-03-04 02:19:42,861 INFO L158 Benchmark]: TraceAbstraction took 3477.90ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 60.0MB in the beginning and 78.2MB in the end (delta: -18.1MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2025-03-04 02:19:42,862 INFO L158 Benchmark]: Witness Printer took 72.04ms. Allocated memory is still 209.7MB. Free memory was 78.2MB in the beginning and 73.6MB in the end (delta: 4.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 02:19:42,863 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.09ms. Allocated memory is still 167.8MB. Free memory was 132.9MB in the beginning and 121.1MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.04ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 119.6MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.68ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 117.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 640.56ms. Allocated memory is still 167.8MB. Free memory was 117.8MB in the beginning and 60.9MB in the end (delta: 56.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3477.90ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 60.0MB in the beginning and 78.2MB in the end (delta: -18.1MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * Witness Printer took 72.04ms. Allocated memory is still 209.7MB. Free memory was 78.2MB in the beginning and 73.6MB in the end (delta: 4.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: 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 7 procedures, 29 locations, 4 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: 3.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 358 IncrementalHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=3, InterpolantAutomatonStates: 36, 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, 2.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 839 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2025-03-04 02:19:42,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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