/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/weaver/test-easy8.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:00:20,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:00:20,527 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 21:00:20,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:00:20,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:00:20,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:00:20,548 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:00:20,548 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:00:20,548 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:00:20,548 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:00:20,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:00:20,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:00:20,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:00:20,549 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:00:20,550 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:00:20,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:00:20,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:00:20,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:00:20,551 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 21:00:20,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:00:20,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:00:20,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:00:20,773 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:00:20,773 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:00:20,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy8.wvr.c [2025-04-13 21:00:21,967 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e64a35e4/390b9654303846a9a510538d20be234e/FLAGed9ce9a61 [2025-04-13 21:00:22,181 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:00:22,181 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy8.wvr.c [2025-04-13 21:00:22,186 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e64a35e4/390b9654303846a9a510538d20be234e/FLAGed9ce9a61 [2025-04-13 21:00:23,020 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e64a35e4/390b9654303846a9a510538d20be234e [2025-04-13 21:00:23,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:00:23,024 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:00:23,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:00:23,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:00:23,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:00:23,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182df722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23, skipping insertion in model container [2025-04-13 21:00:23,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,039 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:00:23,190 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy8.wvr.c[2007,2020] [2025-04-13 21:00:23,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:00:23,205 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:00:23,233 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy8.wvr.c[2007,2020] [2025-04-13 21:00:23,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:00:23,250 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:00:23,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23 WrapperNode [2025-04-13 21:00:23,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:00:23,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:00:23,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:00:23,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:00:23,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,280 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2025-04-13 21:00:23,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:00:23,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:00:23,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:00:23,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:00:23,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,292 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,304 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]. [2025-04-13 21:00:23,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,307 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,307 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:00:23,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 21:00:23,312 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 21:00:23,312 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 21:00:23,313 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (1/1) ... [2025-04-13 21:00:23,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:00:23,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:00:23,342 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) [2025-04-13 21:00:23,344 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 [2025-04-13 21:00:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:00:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 21:00:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 21:00:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 21:00:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 21:00:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:00:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 21:00:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 21:00:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:00:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:00:23,363 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 21:00:23,418 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 21:00:23,419 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:00:23,539 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:00:23,540 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:00:23,540 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 21:00:23,648 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:00:23,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 09:00:23 BoogieIcfgContainer [2025-04-13 21:00:23,653 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 21:00:23,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:00:23,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:00:23,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:00:23,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:00:23" (1/3) ... [2025-04-13 21:00:23,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573864fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:00:23, skipping insertion in model container [2025-04-13 21:00:23,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:00:23" (2/3) ... [2025-04-13 21:00:23,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573864fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:00:23, skipping insertion in model container [2025-04-13 21:00:23,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 09:00:23" (3/3) ... [2025-04-13 21:00:23,661 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy8.wvr.c [2025-04-13 21:00:23,670 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:00:23,671 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy8.wvr.c that has 3 procedures, 18 locations, 15 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 21:00:23,671 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:00:23,703 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 21:00:23,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 17 transitions, 48 flow [2025-04-13 21:00:23,756 INFO L116 PetriNetUnfolderBase]: 0/15 cut-off events. [2025-04-13 21:00:23,757 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 21:00:23,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 15 events. 0/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-13 21:00:23,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 17 transitions, 48 flow [2025-04-13 21:00:23,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 14 transitions, 40 flow [2025-04-13 21:00:23,769 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:00:23,780 INFO L340 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;@781ca7b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:00:23,780 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 21:00:23,786 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 21:00:23,786 INFO L116 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-04-13 21:00:23,786 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 21:00:23,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 21:00:23,787 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:00:23,787 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:00:23,793 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:00:23,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1299687502, now seen corresponding path program 1 times [2025-04-13 21:00:23,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:00:23,800 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979493123] [2025-04-13 21:00:23,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:00:23,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:00:23,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 21:00:23,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 21:00:23,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:00:23,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:00:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:00:24,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:00:24,023 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979493123] [2025-04-13 21:00:24,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979493123] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:00:24,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:00:24,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 21:00:24,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289346870] [2025-04-13 21:00:24,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:00:24,030 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:00:24,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:00:24,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:00:24,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:00:24,050 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 17 [2025-04-13 21:00:24,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2025-04-13 21:00:24,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 21:00:24,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 17 [2025-04-13 21:00:24,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 21:00:24,127 INFO L116 PetriNetUnfolderBase]: 27/71 cut-off events. [2025-04-13 21:00:24,127 INFO L117 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-04-13 21:00:24,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 71 events. 27/71 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 200 event pairs, 10 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 119. Up to 42 conditions per place. [2025-04-13 21:00:24,128 INFO L140 encePairwiseOnDemand]: 14/17 looper letters, 12 selfloop transitions, 2 changer transitions 4/20 dead transitions. [2025-04-13 21:00:24,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 20 transitions, 94 flow [2025-04-13 21:00:24,131 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:00:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 21:00:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2025-04-13 21:00:24,140 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2025-04-13 21:00:24,141 INFO L175 Difference]: Start difference. First operand has 21 places, 14 transitions, 40 flow. Second operand 3 states and 31 transitions. [2025-04-13 21:00:24,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 20 transitions, 94 flow [2025-04-13 21:00:24,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 20 transitions, 82 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-13 21:00:24,145 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 40 flow [2025-04-13 21:00:24,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2025-04-13 21:00:24,152 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2025-04-13 21:00:24,152 INFO L485 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 40 flow [2025-04-13 21:00:24,153 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2025-04-13 21:00:24,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 21:00:24,153 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:00:24,153 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:00:24,153 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:00:24,154 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:00:24,154 INFO L85 PathProgramCache]: Analyzing trace with hash -85769320, now seen corresponding path program 2 times [2025-04-13 21:00:24,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:00:24,154 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904681217] [2025-04-13 21:00:24,154 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:00:24,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:00:24,165 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 1 equivalence classes. [2025-04-13 21:00:24,183 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 21:00:24,183 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 21:00:24,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:00:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:00:24,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:00:24,382 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904681217] [2025-04-13 21:00:24,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904681217] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:00:24,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:00:24,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 21:00:24,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750592358] [2025-04-13 21:00:24,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:00:24,383 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 21:00:24,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:00:24,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 21:00:24,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 21:00:24,384 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 17 [2025-04-13 21:00:24,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2025-04-13 21:00:24,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 21:00:24,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 17 [2025-04-13 21:00:24,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 21:00:24,419 INFO L116 PetriNetUnfolderBase]: 6/21 cut-off events. [2025-04-13 21:00:24,419 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-13 21:00:24,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 21 events. 6/21 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 22. Up to 8 conditions per place. [2025-04-13 21:00:24,419 INFO L140 encePairwiseOnDemand]: 14/17 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2025-04-13 21:00:24,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 56 flow [2025-04-13 21:00:24,424 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 21:00:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 21:00:24,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2025-04-13 21:00:24,425 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2025-04-13 21:00:24,425 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 40 flow. Second operand 4 states and 28 transitions. [2025-04-13 21:00:24,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 56 flow [2025-04-13 21:00:24,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 21:00:24,426 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2025-04-13 21:00:24,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2025-04-13 21:00:24,426 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, -4 predicate places. [2025-04-13 21:00:24,426 INFO L485 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2025-04-13 21:00:24,427 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2025-04-13 21:00:24,428 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 21:00:24,429 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 21:00:24,429 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 21:00:24,429 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 21:00:24,430 INFO L422 BasicCegarLoop]: Path program histogram: [2] [2025-04-13 21:00:24,432 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 21:00:24,432 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 21:00:24,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 09:00:24 BasicIcfg [2025-04-13 21:00:24,435 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 21:00:24,435 INFO L158 Benchmark]: Toolchain (without parser) took 1411.70ms. Allocated memory is still 155.2MB. Free memory was 108.8MB in the beginning and 93.4MB in the end (delta: 15.3MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. [2025-04-13 21:00:24,435 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 163.6MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:00:24,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.11ms. Allocated memory is still 155.2MB. Free memory was 107.9MB in the beginning and 94.2MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 21:00:24,436 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.54ms. Allocated memory is still 155.2MB. Free memory was 94.2MB in the beginning and 92.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:00:24,436 INFO L158 Benchmark]: Boogie Preprocessor took 29.85ms. Allocated memory is still 155.2MB. Free memory was 92.7MB in the beginning and 90.9MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 21:00:24,436 INFO L158 Benchmark]: RCFGBuilder took 341.17ms. Allocated memory is still 155.2MB. Free memory was 90.9MB in the beginning and 69.2MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 21:00:24,436 INFO L158 Benchmark]: TraceAbstraction took 780.53ms. Allocated memory is still 155.2MB. Free memory was 68.3MB in the beginning and 93.4MB in the end (delta: -25.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:00:24,437 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 163.6MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.11ms. Allocated memory is still 155.2MB. Free memory was 107.9MB in the beginning and 94.2MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.54ms. Allocated memory is still 155.2MB. Free memory was 94.2MB in the beginning and 92.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 29.85ms. Allocated memory is still 155.2MB. Free memory was 92.7MB in the beginning and 90.9MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 341.17ms. Allocated memory is still 155.2MB. Free memory was 90.9MB in the beginning and 69.2MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 780.53ms. Allocated memory is still 155.2MB. Free memory was 68.3MB in the beginning and 93.4MB in the end (delta: -25.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 75]: 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, 28 locations, 27 edges, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2025-04-13 21:00:24,450 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...