./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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 /storage/repos/ultimate/releaseScripts/default/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-wip.fs.cvc5-61a6796-m [2024-10-14 03:16:44,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 03:16:44,459 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 03:16:44,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 03:16:44,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 03:16:44,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 03:16:44,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 03:16:44,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 03:16:44,491 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 03:16:44,492 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 03:16:44,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 03:16:44,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 03:16:44,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 03:16:44,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 03:16:44,495 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 03:16:44,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 03:16:44,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 03:16:44,496 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 03:16:44,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 03:16:44,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 03:16:44,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 03:16:44,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 03:16:44,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 03:16:44,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 03:16:44,500 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 03:16:44,500 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 03:16:44,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 03:16:44,500 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 03:16:44,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 03:16:44,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 03:16:44,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 03:16:44,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 03:16:44,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 03:16:44,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 03:16:44,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 03:16:44,502 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 03:16:44,502 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 03:16:44,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 03:16:44,502 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 03:16:44,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 03:16:44,503 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 03:16:44,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 03:16:44,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34a8492e255374aad098e162859199083b5b90fe0eb733edf5e3563474d7ceaa [2024-10-14 03:16:44,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 03:16:44,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 03:16:44,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 03:16:44,731 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 03:16:44,732 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 03:16:44,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c [2024-10-14 03:16:45,942 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 03:16:46,083 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 03:16:46,083 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c [2024-10-14 03:16:46,091 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7371e5443/07dec320a2f7466e89742b5c557dc096/FLAG0052b1664 [2024-10-14 03:16:46,492 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7371e5443/07dec320a2f7466e89742b5c557dc096 [2024-10-14 03:16:46,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 03:16:46,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 03:16:46,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 03:16:46,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 03:16:46,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 03:16:46,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,504 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544a5d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46, skipping insertion in model container [2024-10-14 03:16:46,504 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,517 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 03:16:46,634 WARN L248 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] [2024-10-14 03:16:46,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 03:16:46,644 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 03:16:46,653 WARN L248 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] [2024-10-14 03:16:46,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 03:16:46,666 INFO L204 MainTranslator]: Completed translation [2024-10-14 03:16:46,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46 WrapperNode [2024-10-14 03:16:46,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 03:16:46,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 03:16:46,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 03:16:46,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 03:16:46,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,686 INFO L138 Inliner]: procedures = 12, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2024-10-14 03:16:46,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 03:16:46,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 03:16:46,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 03:16:46,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 03:16:46,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,695 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,703 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]. [2024-10-14 03:16:46,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,706 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,707 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 03:16:46,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 03:16:46,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 03:16:46,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 03:16:46,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (1/1) ... [2024-10-14 03:16:46,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 03:16:46,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:16:46,737 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) [2024-10-14 03:16:46,739 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 [2024-10-14 03:16:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 03:16:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 03:16:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 03:16:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_19_to_19_0 [2024-10-14 03:16:46,775 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_19_to_19_0 [2024-10-14 03:16:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 03:16:46,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 03:16:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 03:16:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 03:16:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 03:16:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 03:16:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 03:16:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 03:16:46,838 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 03:16:46,839 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 03:16:46,909 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-10-14 03:16:46,909 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 03:16:46,929 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 03:16:46,930 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 03:16:46,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:16:46 BoogieIcfgContainer [2024-10-14 03:16:46,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 03:16:46,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 03:16:46,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 03:16:46,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 03:16:46,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:16:46" (1/3) ... [2024-10-14 03:16:46,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315deb71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:16:46, skipping insertion in model container [2024-10-14 03:16:46,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:46" (2/3) ... [2024-10-14 03:16:46,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315deb71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:16:46, skipping insertion in model container [2024-10-14 03:16:46,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:16:46" (3/3) ... [2024-10-14 03:16:46,939 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_1.c [2024-10-14 03:16:46,951 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 03:16:46,951 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 03:16:47,009 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 03:16:47,013 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;@7f44707e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 03:16:47,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 03:16:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 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) [2024-10-14 03:16:47,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 03:16:47,023 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:16:47,024 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:16:47,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:16:47,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:16:47,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1146450700, now seen corresponding path program 1 times [2024-10-14 03:16:47,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:16:47,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621936868] [2024-10-14 03:16:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:16:47,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:16:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:47,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 03:16:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:16:47,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:16:47,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621936868] [2024-10-14 03:16:47,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621936868] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:16:47,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:16:47,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 03:16:47,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622183693] [2024-10-14 03:16:47,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:16:47,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 03:16:47,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:16:47,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 03:16:47,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 03:16:47,479 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 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 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-10-14 03:16:47,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:16:47,586 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2024-10-14 03:16:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 03:16:47,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 9 [2024-10-14 03:16:47,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:16:47,593 INFO L225 Difference]: With dead ends: 21 [2024-10-14 03:16:47,593 INFO L226 Difference]: Without dead ends: 13 [2024-10-14 03:16:47,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 03:16:47,600 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 03:16:47,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:16:47,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-14 03:16:47,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-14 03:16:47,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 9 states have internal predecessors, (9), 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) [2024-10-14 03:16:47,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-10-14 03:16:47,627 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2024-10-14 03:16:47,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:16:47,627 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-10-14 03:16:47,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-10-14 03:16:47,628 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-10-14 03:16:47,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-14 03:16:47,629 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:16:47,629 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:16:47,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 03:16:47,629 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:16:47,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:16:47,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1151650808, now seen corresponding path program 1 times [2024-10-14 03:16:47,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:16:47,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503710376] [2024-10-14 03:16:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:16:47,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:16:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:47,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 03:16:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:47,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:16:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:47,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 03:16:47,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:16:47,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503710376] [2024-10-14 03:16:47,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503710376] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:16:47,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711834281] [2024-10-14 03:16:47,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:16:47,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:16:47,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:16:47,996 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) [2024-10-14 03:16:47,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 03:16:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:48,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-14 03:16:48,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:16:48,085 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 15 treesize of output 1 [2024-10-14 03:16:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 03:16:48,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:16:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:16:48,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711834281] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 03:16:48,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 03:16:48,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 21 [2024-10-14 03:16:48,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172430621] [2024-10-14 03:16:48,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 03:16:48,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-14 03:16:48,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:16:48,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-14 03:16:48,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-10-14 03:16:48,565 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-14 03:16:48,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:16:48,688 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2024-10-14 03:16:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 03:16:48,688 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 14 [2024-10-14 03:16:48,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:16:48,689 INFO L225 Difference]: With dead ends: 21 [2024-10-14 03:16:48,689 INFO L226 Difference]: Without dead ends: 17 [2024-10-14 03:16:48,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2024-10-14 03:16:48,690 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:16:48,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:16:48,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-14 03:16:48,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-14 03:16:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 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) [2024-10-14 03:16:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-10-14 03:16:48,695 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2024-10-14 03:16:48,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:16:48,695 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-14 03:16:48,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-14 03:16:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-10-14 03:16:48,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-14 03:16:48,696 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:16:48,696 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:16:48,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 03:16:48,900 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 [2024-10-14 03:16:48,901 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:16:48,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:16:48,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1489619010, now seen corresponding path program 2 times [2024-10-14 03:16:48,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:16:48,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781848778] [2024-10-14 03:16:48,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:16:48,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:16:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:49,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 03:16:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:49,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:16:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:49,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:16:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:49,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:16:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-14 03:16:49,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:16:49,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781848778] [2024-10-14 03:16:49,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781848778] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:16:49,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435008240] [2024-10-14 03:16:49,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 03:16:49,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:16:49,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:16:49,394 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) [2024-10-14 03:16:49,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 03:16:49,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 03:16:49,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 03:16:49,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-14 03:16:49,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:16:49,452 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 15 treesize of output 1 [2024-10-14 03:16:49,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-14 03:16:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 03:16:49,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:16:50,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-10-14 03:17:02,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435008240] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:17:02,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 03:17:02,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2024-10-14 03:17:02,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472524020] [2024-10-14 03:17:02,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 03:17:02,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-14 03:17:02,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:17:02,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-14 03:17:02,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=595, Unknown=3, NotChecked=0, Total=702 [2024-10-14 03:17:02,371 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 18 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-14 03:17:02,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:17:02,557 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-10-14 03:17:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 03:17:02,557 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 18 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 24 [2024-10-14 03:17:02,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:17:02,558 INFO L225 Difference]: With dead ends: 25 [2024-10-14 03:17:02,558 INFO L226 Difference]: Without dead ends: 21 [2024-10-14 03:17:02,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=167, Invalid=886, Unknown=3, NotChecked=0, Total=1056 [2024-10-14 03:17:02,559 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:17:02,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 76 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:17:02,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-14 03:17:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-14 03:17:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 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) [2024-10-14 03:17:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-10-14 03:17:02,564 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 24 [2024-10-14 03:17:02,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:17:02,564 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-10-14 03:17:02,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 18 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-14 03:17:02,564 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-10-14 03:17:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-14 03:17:02,565 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:17:02,565 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:17:02,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 03:17:02,765 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 [2024-10-14 03:17:02,766 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:17:02,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:17:02,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1362462852, now seen corresponding path program 3 times [2024-10-14 03:17:02,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:17:02,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290138615] [2024-10-14 03:17:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:17:02,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:17:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:02,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 03:17:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:03,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:17:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:03,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:17:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:03,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:17:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:03,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:17:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:03,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:17:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 03:17:03,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:17:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290138615] [2024-10-14 03:17:03,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290138615] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:17:03,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328674837] [2024-10-14 03:17:03,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 03:17:03,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:17:03,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:17:03,547 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) [2024-10-14 03:17:03,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 03:17:03,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-14 03:17:03,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 03:17:03,607 WARN L253 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-10-14 03:17:03,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:17:03,613 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 15 treesize of output 1 [2024-10-14 03:17:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-14 03:17:03,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:17:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:17:05,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328674837] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 03:17:05,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 03:17:05,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 25] total 42 [2024-10-14 03:17:05,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218645548] [2024-10-14 03:17:05,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 03:17:05,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-14 03:17:05,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:17:05,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-14 03:17:05,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2024-10-14 03:17:05,412 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 43 states, 32 states have (on average 1.25) internal successors, (40), 35 states have internal predecessors, (40), 11 states have call successors, (11), 7 states have call predecessors, (11), 13 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-10-14 03:17:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:17:05,709 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2024-10-14 03:17:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 03:17:05,709 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 32 states have (on average 1.25) internal successors, (40), 35 states have internal predecessors, (40), 11 states have call successors, (11), 7 states have call predecessors, (11), 13 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) Word has length 34 [2024-10-14 03:17:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:17:05,710 INFO L225 Difference]: With dead ends: 27 [2024-10-14 03:17:05,710 INFO L226 Difference]: Without dead ends: 23 [2024-10-14 03:17:05,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=476, Invalid=2074, Unknown=0, NotChecked=0, Total=2550 [2024-10-14 03:17:05,711 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:17:05,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 177 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:17:05,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-14 03:17:05,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-14 03:17:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 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), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-14 03:17:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-10-14 03:17:05,717 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 34 [2024-10-14 03:17:05,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:17:05,720 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-10-14 03:17:05,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 32 states have (on average 1.25) internal successors, (40), 35 states have internal predecessors, (40), 11 states have call successors, (11), 7 states have call predecessors, (11), 13 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-10-14 03:17:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-10-14 03:17:05,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 03:17:05,722 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:17:05,722 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:17:05,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 03:17:05,922 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 [2024-10-14 03:17:05,923 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:17:05,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:17:05,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2002779038, now seen corresponding path program 4 times [2024-10-14 03:17:05,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:17:05,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416226996] [2024-10-14 03:17:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:17:05,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:17:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:06,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 03:17:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:06,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:17:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:06,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:17:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:06,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:17:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:06,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:17:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:06,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:17:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:06,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:17:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:17:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-14 03:17:06,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:17:06,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416226996] [2024-10-14 03:17:06,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416226996] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:17:06,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096838220] [2024-10-14 03:17:06,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 03:17:06,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:17:06,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:17:06,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 03:17:06,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 03:17:06,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 03:17:06,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 03:17:06,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-10-14 03:17:06,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:17:06,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-14 03:17:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-14 03:17:06,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:17:07,593 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-10-14 03:17:07,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-10-14 03:17:07,838 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-10-14 03:17:07,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-10-14 03:17:08,057 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-10-14 03:17:08,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-10-14 03:17:08,235 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-10-14 03:17:08,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-10-14 03:17:08,353 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-10-14 03:17:08,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-10-14 03:17:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-14 03:17:08,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096838220] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 03:17:08,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 03:17:08,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 23 [2024-10-14 03:17:08,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153363564] [2024-10-14 03:17:08,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 03:17:08,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 03:17:08,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:17:08,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 03:17:08,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-10-14 03:17:08,590 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 23 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 6 states have call successors, (7) [2024-10-14 03:17:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:17:08,734 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2024-10-14 03:17:08,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 03:17:08,734 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 6 states have call successors, (7) Word has length 39 [2024-10-14 03:17:08,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:17:08,734 INFO L225 Difference]: With dead ends: 23 [2024-10-14 03:17:08,734 INFO L226 Difference]: Without dead ends: 0 [2024-10-14 03:17:08,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-10-14 03:17:08,735 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:17:08,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 27 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:17:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-14 03:17:08,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-14 03:17:08,736 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) [2024-10-14 03:17:08,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-14 03:17:08,736 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2024-10-14 03:17:08,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:17:08,736 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-14 03:17:08,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 6 states have call successors, (7) [2024-10-14 03:17:08,737 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-14 03:17:08,737 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-14 03:17:08,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-14 03:17:08,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 03:17:08,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:17:08,943 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1] [2024-10-14 03:17:08,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-14 03:17:09,046 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 03:17:09,051 WARN L155 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 [2024-10-14 03:17:09,058 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-14 03:17:09,058 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-10-14 03:17:09,058 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-10-14 03:17:09,059 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-14 03:17:09,059 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-14 03:17:09,059 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-14 03:17:09,059 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-10-14 03:17:09,059 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-10-14 03:17:09,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 03:17:09 BoogieIcfgContainer [2024-10-14 03:17:09,060 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 03:17:09,060 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 03:17:09,060 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 03:17:09,060 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 03:17:09,061 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:16:46" (3/4) ... [2024-10-14 03:17:09,062 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 03:17:09,065 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_19_to_19_0 [2024-10-14 03:17:09,067 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-14 03:17:09,067 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-14 03:17:09,067 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 03:17:09,067 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 03:17:09,124 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 03:17:09,125 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 03:17:09,125 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 03:17:09,125 INFO L158 Benchmark]: Toolchain (without parser) took 22630.55ms. Allocated memory was 172.0MB in the beginning and 228.6MB in the end (delta: 56.6MB). Free memory was 104.3MB in the beginning and 73.8MB in the end (delta: 30.6MB). Peak memory consumption was 88.5MB. Max. memory is 16.1GB. [2024-10-14 03:17:09,125 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 172.0MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 03:17:09,125 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.74ms. Allocated memory is still 172.0MB. Free memory was 104.1MB in the beginning and 93.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 03:17:09,126 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.55ms. Allocated memory is still 172.0MB. Free memory was 93.2MB in the beginning and 91.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 03:17:09,126 INFO L158 Benchmark]: Boogie Preprocessor took 21.48ms. Allocated memory is still 172.0MB. Free memory was 91.7MB in the beginning and 90.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 03:17:09,126 INFO L158 Benchmark]: RCFGBuilder took 221.26ms. Allocated memory is still 172.0MB. Free memory was 90.0MB in the beginning and 78.9MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 03:17:09,126 INFO L158 Benchmark]: TraceAbstraction took 22127.92ms. Allocated memory was 172.0MB in the beginning and 228.6MB in the end (delta: 56.6MB). Free memory was 78.2MB in the beginning and 78.0MB in the end (delta: 223.0kB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. [2024-10-14 03:17:09,127 INFO L158 Benchmark]: Witness Printer took 64.61ms. Allocated memory is still 228.6MB. Free memory was 78.0MB in the beginning and 73.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 03:17:09,128 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 172.0MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 170.74ms. Allocated memory is still 172.0MB. Free memory was 104.1MB in the beginning and 93.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.55ms. Allocated memory is still 172.0MB. Free memory was 93.2MB in the beginning and 91.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.48ms. Allocated memory is still 172.0MB. Free memory was 91.7MB in the beginning and 90.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 221.26ms. Allocated memory is still 172.0MB. Free memory was 90.0MB in the beginning and 78.9MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 22127.92ms. Allocated memory was 172.0MB in the beginning and 228.6MB in the end (delta: 56.6MB). Free memory was 78.2MB in the beginning and 78.0MB in the end (delta: 223.0kB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. * Witness Printer took 64.61ms. Allocated memory is still 228.6MB. Free memory was 78.0MB in the beginning and 73.8MB 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.0s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 366 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 324 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 571 IncrementalHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 42 mSDtfsCounter, 571 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 167 SyntacticMatches, 6 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, InterpolantAutomatonStates: 49, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 19.8s InterpolantComputationTime, 231 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 306 ConstructedInterpolants, 4 QuantifiedInterpolants, 2925 SizeOfPredicates, 46 NumberOfNonLiveVariables, 480 ConjunctsInSsa, 225 ConjunctsInUnsatCore, 12 InterpolantComputations, 1 PerfectInterpolantSequences, 319/573 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! [2024-10-14 03:17:09,149 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE