/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 FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 17:53:50,784 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 17:53:50,838 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 17:53:50,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 17:53:50,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 17:53:50,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 17:53:50,865 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 17:53:50,865 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 17:53:50,865 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 17:53:50,865 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 17:53:50,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 17:53:50,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 17:53:50,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 17:53:50,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 17:53:50,866 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 17:53:50,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 17:53:50,867 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 17:53:50,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:53:50,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:53:50,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 17:53:50,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 17:53:50,869 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 -> FINITE_AUTOMATA [2025-04-13 17:53:51,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 17:53:51,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 17:53:51,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 17:53:51,104 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 17:53:51,106 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 17:53:51,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2025-04-13 17:53:52,407 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/975bc1443/43fa20312968492e92d7035991e9fd46/FLAGf13c75f20 [2025-04-13 17:53:52,601 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 17:53:52,602 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2025-04-13 17:53:52,607 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/975bc1443/43fa20312968492e92d7035991e9fd46/FLAGf13c75f20 [2025-04-13 17:53:53,408 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/975bc1443/43fa20312968492e92d7035991e9fd46 [2025-04-13 17:53:53,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 17:53:53,411 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 17:53:53,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 17:53:53,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 17:53:53,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 17:53:53,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151957bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53, skipping insertion in model container [2025-04-13 17:53:53,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 17:53:53,572 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/chl-simpl-str-symm.wvr.c[2329,2342] [2025-04-13 17:53:53,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:53:53,585 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 17:53:53,603 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/chl-simpl-str-symm.wvr.c[2329,2342] [2025-04-13 17:53:53,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:53:53,614 INFO L204 MainTranslator]: Completed translation [2025-04-13 17:53:53,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53 WrapperNode [2025-04-13 17:53:53,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 17:53:53,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 17:53:53,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 17:53:53,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 17:53:53,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,643 INFO L138 Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 115 [2025-04-13 17:53:53,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 17:53:53,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 17:53:53,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 17:53:53,644 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 17:53:53,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,650 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,667 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 17:53:53,668 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,674 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,674 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,676 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 17:53:53,681 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 17:53:53,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 17:53:53,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 17:53:53,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (1/1) ... [2025-04-13 17:53:53,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:53:53,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:53:53,712 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 17:53:53,714 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 17:53:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 17:53:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 17:53:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 17:53:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 17:53:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 17:53:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 17:53:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 17:53:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 17:53:53,732 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 17:53:53,790 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 17:53:53,791 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 17:53:54,001 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 17:53:54,002 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 17:53:54,002 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 17:53:54,235 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 17:53:54,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:53:54 BoogieIcfgContainer [2025-04-13 17:53:54,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 17:53:54,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 17:53:54,238 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 17:53:54,241 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 17:53:54,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 05:53:53" (1/3) ... [2025-04-13 17:53:54,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54fd5a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:53:54, skipping insertion in model container [2025-04-13 17:53:54,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:53:53" (2/3) ... [2025-04-13 17:53:54,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54fd5a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:53:54, skipping insertion in model container [2025-04-13 17:53:54,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:53:54" (3/3) ... [2025-04-13 17:53:54,243 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2025-04-13 17:53:54,255 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 17:53:54,256 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-simpl-str-symm.wvr.c that has 3 procedures, 14 locations, 11 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 17:53:54,257 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 17:53:54,296 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 17:53:54,317 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 13 transitions, 40 flow [2025-04-13 17:53:54,324 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 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 17:53:54,346 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:53:54,356 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=FINITE_AUTOMATA, 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;@31c6f132, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:53:54,357 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 17:53:54,358 INFO L278 IsEmpty]: Start isEmpty. Operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 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 17:53:54,361 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-13 17:53:54,362 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:53:54,362 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:53:54,363 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 17:53:54,367 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:53:54,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1182856313, now seen corresponding path program 1 times [2025-04-13 17:53:54,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:53:54,373 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474817082] [2025-04-13 17:53:54,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:53:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:53:54,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 17:53:54,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 17:53:54,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:53:54,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:55,152 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 17:53:55,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:53:55,154 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474817082] [2025-04-13 17:53:55,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474817082] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:53:55,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:53:55,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 17:53:55,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395233190] [2025-04-13 17:53:55,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:53:55,160 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 17:53:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:53:55,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 17:53:55,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 17:53:55,175 INFO L87 Difference]: Start difference. First operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 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) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 17:53:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:53:55,273 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2025-04-13 17:53:55,273 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:53:55,274 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 10 [2025-04-13 17:53:55,274 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:53:55,280 INFO L225 Difference]: With dead ends: 23 [2025-04-13 17:53:55,280 INFO L226 Difference]: Without dead ends: 13 [2025-04-13 17:53:55,282 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:53:55,284 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:53:55,284 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:53:55,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-04-13 17:53:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2025-04-13 17:53:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 17:53:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2025-04-13 17:53:55,303 INFO L79 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2025-04-13 17:53:55,303 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:53:55,303 INFO L485 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2025-04-13 17:53:55,303 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 17:53:55,303 INFO L278 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2025-04-13 17:53:55,303 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-13 17:53:55,303 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:53:55,303 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:53:55,304 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 17:53:55,304 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 17:53:55,304 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:53:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1182106733, now seen corresponding path program 2 times [2025-04-13 17:53:55,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:53:55,304 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190250625] [2025-04-13 17:53:55,304 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:53:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:53:55,316 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-04-13 17:53:55,335 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 17:53:55,335 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 17:53:55,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:55,754 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 17:53:55,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:53:55,755 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190250625] [2025-04-13 17:53:55,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190250625] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:53:55,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:53:55,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 17:53:55,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639880426] [2025-04-13 17:53:55,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:53:55,756 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 17:53:55,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:53:55,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 17:53:55,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 17:53:55,756 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 17:53:55,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:53:55,817 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2025-04-13 17:53:55,818 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:53:55,818 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 10 [2025-04-13 17:53:55,818 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:53:55,818 INFO L225 Difference]: With dead ends: 13 [2025-04-13 17:53:55,818 INFO L226 Difference]: Without dead ends: 0 [2025-04-13 17:53:55,818 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:53:55,819 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:53:55,819 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:53:55,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-13 17:53:55,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-13 17:53:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 17:53:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-13 17:53:55,820 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2025-04-13 17:53:55,820 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:53:55,820 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-13 17:53:55,820 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 17:53:55,820 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-13 17:53:55,820 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-13 17:53:55,822 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 17:53:55,822 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 17:53:55,822 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 17:53:55,822 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 17:53:55,824 INFO L422 BasicCegarLoop]: Path program histogram: [2] [2025-04-13 17:53:55,827 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 17:53:55,827 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 17:53:55,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 05:53:55 BasicIcfg [2025-04-13 17:53:55,830 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 17:53:55,830 INFO L158 Benchmark]: Toolchain (without parser) took 2418.97ms. Allocated memory is still 155.2MB. Free memory was 107.4MB in the beginning and 53.9MB in the end (delta: 53.5MB). Peak memory consumption was 52.1MB. Max. memory is 8.0GB. [2025-04-13 17:53:55,831 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 163.6MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:53:55,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.35ms. Allocated memory is still 155.2MB. Free memory was 107.4MB in the beginning and 93.1MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 17:53:55,831 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.11ms. Allocated memory is still 155.2MB. Free memory was 93.1MB in the beginning and 91.4MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 17:53:55,831 INFO L158 Benchmark]: Boogie Preprocessor took 37.58ms. Allocated memory is still 155.2MB. Free memory was 91.4MB in the beginning and 89.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:53:55,831 INFO L158 Benchmark]: RCFGBuilder took 554.82ms. Allocated memory is still 155.2MB. Free memory was 89.6MB in the beginning and 37.4MB in the end (delta: 52.1MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2025-04-13 17:53:55,831 INFO L158 Benchmark]: TraceAbstraction took 1592.15ms. Allocated memory is still 155.2MB. Free memory was 36.8MB in the beginning and 53.9MB in the end (delta: -17.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:53:55,832 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 163.6MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 203.35ms. Allocated memory is still 155.2MB. Free memory was 107.4MB in the beginning and 93.1MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.11ms. Allocated memory is still 155.2MB. Free memory was 93.1MB in the beginning and 91.4MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.58ms. Allocated memory is still 155.2MB. Free memory was 91.4MB in the beginning and 89.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 554.82ms. Allocated memory is still 155.2MB. Free memory was 89.6MB in the beginning and 37.4MB in the end (delta: 52.1MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. * TraceAbstraction took 1592.15ms. Allocated memory is still 155.2MB. Free memory was 36.8MB in the beginning and 53.9MB in the end (delta: -17.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 72]: 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, 20 locations, 19 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 276 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 17:53:55,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...