./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.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/recursified_loop-simple/recursified_nested_1.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 34a8492e255374aad098e162859199083b5b90fe0eb733edf5e3563474d7ceaa --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:13:03,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:13:03,566 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:13:03,571 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:13:03,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:13:03,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:13:03,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:13:03,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:13:03,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:13:03,590 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:13:03,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:13:03,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:13:03,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:13:03,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:13:03,594 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:13:03,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:13:03,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:13:03,596 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:13:03,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:13:03,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:13:03,597 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:13:03,597 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:13:03,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:13:03,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:13:03,599 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:13:03,599 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:13:03,600 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:13:03,600 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:13:03,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:13:03,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:13:03,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:13:03,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:13:03,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:13:03,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:13:03,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:13:03,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:13:03,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:13:03,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:13:03,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:13:03,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:13:03,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:13:03,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:13:03,603 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34a8492e255374aad098e162859199083b5b90fe0eb733edf5e3563474d7ceaa [2024-11-22 02:13:03,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:13:03,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:13:03,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:13:03,809 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:13:03,809 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:13:03,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c [2024-11-22 02:13:05,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:13:05,267 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:13:05,269 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c [2024-11-22 02:13:05,277 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8899d68e0/9e521bf95adf470cb5809322b52b8124/FLAGd7c203489 [2024-11-22 02:13:05,681 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8899d68e0/9e521bf95adf470cb5809322b52b8124 [2024-11-22 02:13:05,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:13:05,684 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:13:05,685 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:13:05,685 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:13:05,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:13:05,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:05,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b1be1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05, skipping insertion in model container [2024-11-22 02:13:05,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:05,707 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:13:05,853 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/recursified_loop-simple/recursified_nested_1.c[1277,1290] [2024-11-22 02:13:05,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:13:05,886 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:13:05,923 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/recursified_loop-simple/recursified_nested_1.c[1277,1290] [2024-11-22 02:13:05,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:13:05,940 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:13:05,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05 WrapperNode [2024-11-22 02:13:05,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:13:05,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:13:05,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:13:05,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:13:05,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:05,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:05,972 INFO L138 Inliner]: procedures = 12, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2024-11-22 02:13:05,972 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:13:05,973 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:13:05,973 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:13:05,973 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:13:05,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:05,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:05,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:05,994 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 2 writes are split as follows [0, 2]. [2024-11-22 02:13:05,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:05,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:05,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:06,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:06,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:06,008 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:06,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:13:06,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:13:06,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:13:06,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:13:06,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (1/1) ... [2024-11-22 02:13:06,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:13:06,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:06,043 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) [2024-11-22 02:13:06,048 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 [2024-11-22 02:13:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 02:13:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 02:13:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:13:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_19_to_19_0 [2024-11-22 02:13:06,086 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_19_to_19_0 [2024-11-22 02:13:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:13:06,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:13:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 02:13:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 02:13:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:13:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 02:13:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 02:13:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 02:13:06,148 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:13:06,150 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:13:06,238 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-11-22 02:13:06,238 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:13:06,247 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:13:06,247 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:13:06,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:06 BoogieIcfgContainer [2024-11-22 02:13:06,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:13:06,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:13:06,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:13:06,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:13:06,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:13:05" (1/3) ... [2024-11-22 02:13:06,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e398a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:13:06, skipping insertion in model container [2024-11-22 02:13:06,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:05" (2/3) ... [2024-11-22 02:13:06,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e398a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:13:06, skipping insertion in model container [2024-11-22 02:13:06,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:06" (3/3) ... [2024-11-22 02:13:06,256 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_1.c [2024-11-22 02:13:06,271 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:13:06,271 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:13:06,308 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:13:06,314 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;@6a5f5778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:13:06,314 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:13:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 02:13:06,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 02:13:06,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:06,324 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:06,324 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:06,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:06,329 INFO L85 PathProgramCache]: Analyzing trace with hash -238646374, now seen corresponding path program 1 times [2024-11-22 02:13:06,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:06,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183436767] [2024-11-22 02:13:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:06,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:13:06,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:06,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183436767] [2024-11-22 02:13:06,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183436767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:13:06,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:13:06,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:13:06,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314814738] [2024-11-22 02:13:06,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:13:06,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:13:06,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:06,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:13:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:13:06,733 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:13:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:06,792 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-11-22 02:13:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:13:06,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-22 02:13:06,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:06,799 INFO L225 Difference]: With dead ends: 26 [2024-11-22 02:13:06,800 INFO L226 Difference]: Without dead ends: 14 [2024-11-22 02:13:06,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:13:06,806 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:06,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:13:06,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-22 02:13:06,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-22 02:13:06,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 02:13:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-22 02:13:06,847 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2024-11-22 02:13:06,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:06,848 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-22 02:13:06,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:13:06,848 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-22 02:13:06,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-22 02:13:06,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:06,850 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:06,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:13:06,851 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:06,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:06,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1470993118, now seen corresponding path program 1 times [2024-11-22 02:13:06,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:06,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990032843] [2024-11-22 02:13:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:06,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:13:07,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:07,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990032843] [2024-11-22 02:13:07,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990032843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:07,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061531732] [2024-11-22 02:13:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:07,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:07,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:07,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:13:07,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:13:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:07,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 02:13:07,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:07,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:13:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:13:07,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:13:07,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061531732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:07,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:07,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2024-11-22 02:13:07,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303632375] [2024-11-22 02:13:07,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:07,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 02:13:07,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:07,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 02:13:07,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:13:07,831 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 02:13:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:07,947 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-11-22 02:13:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:13:07,948 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 15 [2024-11-22 02:13:07,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:07,948 INFO L225 Difference]: With dead ends: 22 [2024-11-22 02:13:07,949 INFO L226 Difference]: Without dead ends: 18 [2024-11-22 02:13:07,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2024-11-22 02:13:07,950 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:07,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 71 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:13:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-22 02:13:07,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-22 02:13:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:13:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-22 02:13:07,956 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2024-11-22 02:13:07,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:07,956 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-22 02:13:07,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 02:13:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-22 02:13:07,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-22 02:13:07,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:07,958 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:07,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 02:13:08,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:08,162 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:08,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:08,163 INFO L85 PathProgramCache]: Analyzing trace with hash -939005732, now seen corresponding path program 2 times [2024-11-22 02:13:08,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:08,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068955035] [2024-11-22 02:13:08,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:13:08,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:08,178 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:13:08,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 02:13:08,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:08,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068955035] [2024-11-22 02:13:08,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068955035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:08,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367640098] [2024-11-22 02:13:08,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:13:08,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:08,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:08,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:13:08,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:13:08,607 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:13:08,608 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:08,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-22 02:13:08,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:08,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:13:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:13:08,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:13:09,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367640098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:09,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:09,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 18] total 32 [2024-11-22 02:13:09,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434133123] [2024-11-22 02:13:09,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:09,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-22 02:13:09,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:09,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-22 02:13:09,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2024-11-22 02:13:09,742 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 32 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-22 02:13:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:09,923 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2024-11-22 02:13:09,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:13:09,924 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 25 [2024-11-22 02:13:09,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:09,924 INFO L225 Difference]: With dead ends: 26 [2024-11-22 02:13:09,924 INFO L226 Difference]: Without dead ends: 22 [2024-11-22 02:13:09,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=1116, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 02:13:09,926 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:09,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 108 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:13:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-22 02:13:09,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-22 02:13:09,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 02:13:09,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-11-22 02:13:09,930 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 25 [2024-11-22 02:13:09,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:09,930 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-11-22 02:13:09,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-22 02:13:09,931 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-11-22 02:13:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-22 02:13:09,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:09,932 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:09,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 02:13:10,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-22 02:13:10,133 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:10,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:10,133 INFO L85 PathProgramCache]: Analyzing trace with hash -797696106, now seen corresponding path program 3 times [2024-11-22 02:13:10,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:10,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900507507] [2024-11-22 02:13:10,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:13:10,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:10,163 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 02:13:10,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:10,472 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-22 02:13:10,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:10,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900507507] [2024-11-22 02:13:10,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900507507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:10,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372956708] [2024-11-22 02:13:10,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:13:10,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:10,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:10,477 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:13:10,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:13:10,537 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 02:13:10,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:10,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-22 02:13:10,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:10,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:13:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-22 02:13:10,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:13:12,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372956708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:12,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:12,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 26] total 45 [2024-11-22 02:13:12,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390112666] [2024-11-22 02:13:12,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:12,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-22 02:13:12,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:12,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-22 02:13:12,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1680, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 02:13:12,410 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 45 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 11 states have call successors, (11), 8 states have call predecessors, (11), 14 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-22 02:13:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:12,743 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2024-11-22 02:13:12,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 02:13:12,743 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 11 states have call successors, (11), 8 states have call predecessors, (11), 14 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) Word has length 35 [2024-11-22 02:13:12,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:12,744 INFO L225 Difference]: With dead ends: 26 [2024-11-22 02:13:12,744 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 02:13:12,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=473, Invalid=2389, Unknown=0, NotChecked=0, Total=2862 [2024-11-22 02:13:12,745 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:12,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 132 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:13:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 02:13:12,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 02:13:12,746 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) [2024-11-22 02:13:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 02:13:12,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2024-11-22 02:13:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:12,747 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 02:13:12,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 11 states have call successors, (11), 8 states have call predecessors, (11), 14 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-22 02:13:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 02:13:12,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 02:13:12,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 02:13:12,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 02:13:12,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:12,953 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-22 02:13:12,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 02:13:13,083 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 02:13:13,088 WARN L156 FloydHoareUtils]: Requires clause for func_to_recursive_line_19_to_19_0 contained old-variable. Original clause: (= |#memory_int#1| |old(#memory_int#1)|) Eliminated clause: true [2024-11-22 02:13:13,093 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-22 02:13:13,094 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-22 02:13:13,094 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-11-22 02:13:13,095 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-22 02:13:13,096 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-22 02:13:13,096 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-22 02:13:13,096 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-22 02:13:13,096 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-11-22 02:13:13,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:13:13 BoogieIcfgContainer [2024-11-22 02:13:13,098 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 02:13:13,098 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 02:13:13,098 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 02:13:13,098 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 02:13:13,099 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:06" (3/4) ... [2024-11-22 02:13:13,105 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 02:13:13,108 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_19_to_19_0 [2024-11-22 02:13:13,110 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-22 02:13:13,110 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 02:13:13,110 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 02:13:13,110 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 02:13:13,177 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 02:13:13,177 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 02:13:13,177 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 02:13:13,178 INFO L158 Benchmark]: Toolchain (without parser) took 7493.98ms. Allocated memory was 148.9MB in the beginning and 218.1MB in the end (delta: 69.2MB). Free memory was 86.0MB in the beginning and 173.3MB in the end (delta: -87.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 02:13:13,178 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 02:13:13,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.10ms. Allocated memory is still 148.9MB. Free memory was 85.7MB in the beginning and 119.2MB in the end (delta: -33.6MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2024-11-22 02:13:13,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.80ms. Allocated memory is still 148.9MB. Free memory was 119.2MB in the beginning and 117.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 02:13:13,178 INFO L158 Benchmark]: Boogie Preprocessor took 36.53ms. Allocated memory is still 148.9MB. Free memory was 117.7MB in the beginning and 116.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 02:13:13,178 INFO L158 Benchmark]: RCFGBuilder took 237.60ms. Allocated memory is still 148.9MB. Free memory was 116.0MB in the beginning and 105.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-22 02:13:13,179 INFO L158 Benchmark]: TraceAbstraction took 6848.58ms. Allocated memory was 148.9MB in the beginning and 218.1MB in the end (delta: 69.2MB). Free memory was 104.6MB in the beginning and 177.5MB in the end (delta: -72.9MB). Peak memory consumption was 116.4MB. Max. memory is 16.1GB. [2024-11-22 02:13:13,179 INFO L158 Benchmark]: Witness Printer took 79.15ms. Allocated memory is still 218.1MB. Free memory was 177.5MB in the beginning and 173.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 02:13:13,181 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.10ms. Allocated memory is still 148.9MB. Free memory was 85.7MB in the beginning and 119.2MB in the end (delta: -33.6MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.80ms. Allocated memory is still 148.9MB. Free memory was 119.2MB in the beginning and 117.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.53ms. Allocated memory is still 148.9MB. Free memory was 117.7MB in the beginning and 116.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 237.60ms. Allocated memory is still 148.9MB. Free memory was 116.0MB in the beginning and 105.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6848.58ms. Allocated memory was 148.9MB in the beginning and 218.1MB in the end (delta: 69.2MB). Free memory was 104.6MB in the beginning and 177.5MB in the end (delta: -72.9MB). Peak memory consumption was 116.4MB. Max. memory is 16.1GB. * Witness Printer took 79.15ms. Allocated memory is still 218.1MB. Free memory was 177.5MB in the beginning and 173.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] * 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: 48]: 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 CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.7s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 349 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 304 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 471 IncrementalHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 45 mSDtfsCounter, 471 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1295 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=3, InterpolantAutomatonStates: 41, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 2214 SizeOfPredicates, 33 NumberOfNonLiveVariables, 345 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 126/303 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 02:13:13,197 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