./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_flag_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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/array-industry-pattern/array_of_struct_ptr_flag_init.i -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 b855c2333aba0768da7f98c0f43af3ba5efb2578eeec0e9146f1a7f4f307c07a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 16:40:52,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 16:40:52,721 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 16:40:52,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 16:40:52,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 16:40:52,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 16:40:52,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 16:40:52,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 16:40:52,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 16:40:52,754 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 16:40:52,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 16:40:52,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 16:40:52,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 16:40:52,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 16:40:52,755 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 16:40:52,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 16:40:52,756 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 16:40:52,756 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 16:40:52,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 16:40:52,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 16:40:52,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 16:40:52,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 16:40:52,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 16:40:52,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 16:40:52,761 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 16:40:52,761 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 16:40:52,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 16:40:52,762 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 16:40:52,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 16:40:52,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 16:40:52,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 16:40:52,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 16:40:52,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:40:52,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 16:40:52,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 16:40:52,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 16:40:52,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 16:40:52,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 16:40:52,764 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 16:40:52,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 16:40:52,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 16:40:52,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 16:40:52,766 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b855c2333aba0768da7f98c0f43af3ba5efb2578eeec0e9146f1a7f4f307c07a [2024-11-19 16:40:52,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 16:40:52,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 16:40:52,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 16:40:52,970 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 16:40:52,971 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 16:40:52,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_flag_init.i [2024-11-19 16:40:54,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 16:40:54,318 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 16:40:54,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_flag_init.i [2024-11-19 16:40:54,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59190f37d/7ed4c87a92c94e42849a6adfec4c8351/FLAGc00792609 [2024-11-19 16:40:54,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59190f37d/7ed4c87a92c94e42849a6adfec4c8351 [2024-11-19 16:40:54,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 16:40:54,338 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 16:40:54,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 16:40:54,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 16:40:54,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 16:40:54,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ab4a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54, skipping insertion in model container [2024-11-19 16:40:54,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 16:40:54,494 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/array-industry-pattern/array_of_struct_ptr_flag_init.i[959,972] [2024-11-19 16:40:54,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:40:54,520 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 16:40:54,529 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/array-industry-pattern/array_of_struct_ptr_flag_init.i[959,972] [2024-11-19 16:40:54,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:40:54,551 INFO L204 MainTranslator]: Completed translation [2024-11-19 16:40:54,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54 WrapperNode [2024-11-19 16:40:54,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 16:40:54,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 16:40:54,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 16:40:54,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 16:40:54,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,564 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,577 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2024-11-19 16:40:54,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 16:40:54,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 16:40:54,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 16:40:54,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 16:40:54,600 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,601 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,610 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 16:40:54,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,615 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,622 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,626 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 16:40:54,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 16:40:54,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 16:40:54,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 16:40:54,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (1/1) ... [2024-11-19 16:40:54,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:40:54,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:40:54,664 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) [2024-11-19 16:40:54,667 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 [2024-11-19 16:40:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 16:40:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 16:40:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 16:40:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 16:40:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 16:40:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 16:40:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 16:40:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 16:40:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 16:40:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 16:40:54,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 16:40:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 16:40:54,780 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 16:40:54,782 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 16:40:54,908 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-19 16:40:54,909 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 16:40:54,920 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 16:40:54,920 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 16:40:54,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:40:54 BoogieIcfgContainer [2024-11-19 16:40:54,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 16:40:54,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 16:40:54,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 16:40:54,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 16:40:54,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:40:54" (1/3) ... [2024-11-19 16:40:54,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c94f9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:40:54, skipping insertion in model container [2024-11-19 16:40:54,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:40:54" (2/3) ... [2024-11-19 16:40:54,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c94f9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:40:54, skipping insertion in model container [2024-11-19 16:40:54,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:40:54" (3/3) ... [2024-11-19 16:40:54,929 INFO L112 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2024-11-19 16:40:54,944 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 16:40:54,944 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 16:40:54,984 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 16:40:54,989 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;@3c2ce6d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 16:40:54,989 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 16:40:54,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:40:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 16:40:54,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:40:54,997 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:40:54,997 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:40:55,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:40:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2060710478, now seen corresponding path program 1 times [2024-11-19 16:40:55,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:40:55,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540694204] [2024-11-19 16:40:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:40:55,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:40:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:40:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:40:55,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:40:55,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540694204] [2024-11-19 16:40:55,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540694204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:40:55,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:40:55,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 16:40:55,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957867855] [2024-11-19 16:40:55,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:40:55,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 16:40:55,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:40:55,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 16:40:55,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:40:55,225 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:40:55,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:40:55,248 INFO L93 Difference]: Finished difference Result 38 states and 54 transitions. [2024-11-19 16:40:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 16:40:55,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-19 16:40:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:40:55,260 INFO L225 Difference]: With dead ends: 38 [2024-11-19 16:40:55,260 INFO L226 Difference]: Without dead ends: 18 [2024-11-19 16:40:55,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:40:55,266 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:40:55,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:40:55,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-19 16:40:55,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2024-11-19 16:40:55,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2024-11-19 16:40:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-19 16:40:55,322 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2024-11-19 16:40:55,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:40:55,322 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-19 16:40:55,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:40:55,323 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-19 16:40:55,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 16:40:55,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:40:55,323 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:40:55,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 16:40:55,324 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:40:55,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:40:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1264138591, now seen corresponding path program 1 times [2024-11-19 16:40:55,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:40:55,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329208450] [2024-11-19 16:40:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:40:55,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:40:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:40:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 16:40:55,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:40:55,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329208450] [2024-11-19 16:40:55,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329208450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:40:55,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:40:55,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 16:40:55,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350559782] [2024-11-19 16:40:55,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:40:55,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 16:40:55,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:40:55,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 16:40:55,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:40:55,412 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-19 16:40:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:40:55,432 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-11-19 16:40:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 16:40:55,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 16:40:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:40:55,434 INFO L225 Difference]: With dead ends: 35 [2024-11-19 16:40:55,434 INFO L226 Difference]: Without dead ends: 27 [2024-11-19 16:40:55,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:40:55,435 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:40:55,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:40:55,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-19 16:40:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2024-11-19 16:40:55,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2024-11-19 16:40:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-19 16:40:55,439 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2024-11-19 16:40:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:40:55,439 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-19 16:40:55,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-19 16:40:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-19 16:40:55,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 16:40:55,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:40:55,440 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:40:55,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 16:40:55,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:40:55,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:40:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1458340319, now seen corresponding path program 1 times [2024-11-19 16:40:55,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:40:55,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551770241] [2024-11-19 16:40:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:40:55,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:40:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:40:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 16:40:55,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:40:55,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551770241] [2024-11-19 16:40:55,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551770241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:40:55,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617722703] [2024-11-19 16:40:55,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:40:55,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:40:55,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:40:55,516 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) [2024-11-19 16:40:55,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 16:40:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:40:55,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 16:40:55,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:40:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 16:40:55,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 16:40:55,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617722703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:40:55,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 16:40:55,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-19 16:40:55,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625448199] [2024-11-19 16:40:55,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:40:55,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 16:40:55,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:40:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 16:40:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 16:40:55,599 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-11-19 16:40:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:40:55,613 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-11-19 16:40:55,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 16:40:55,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-19 16:40:55,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:40:55,614 INFO L225 Difference]: With dead ends: 32 [2024-11-19 16:40:55,614 INFO L226 Difference]: Without dead ends: 18 [2024-11-19 16:40:55,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 16:40:55,615 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:40:55,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:40:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-19 16:40:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-19 16:40:55,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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) [2024-11-19 16:40:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-19 16:40:55,621 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 15 [2024-11-19 16:40:55,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:40:55,621 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-19 16:40:55,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-11-19 16:40:55,622 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-19 16:40:55,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 16:40:55,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:40:55,622 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:40:55,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 16:40:55,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:40:55,823 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:40:55,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:40:55,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2027280351, now seen corresponding path program 1 times [2024-11-19 16:40:55,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:40:55,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594112533] [2024-11-19 16:40:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:40:55,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:40:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:40:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 16:40:55,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:40:55,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594112533] [2024-11-19 16:40:55,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594112533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:40:55,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902087774] [2024-11-19 16:40:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:40:55,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:40:55,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:40:55,889 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) [2024-11-19 16:40:55,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 16:40:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:40:55,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 16:40:55,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:40:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 16:40:55,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:40:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 16:40:56,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902087774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:40:56,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:40:56,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-19 16:40:56,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770081028] [2024-11-19 16:40:56,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:40:56,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 16:40:56,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:40:56,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 16:40:56,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 16:40:56,031 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:40:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:40:56,075 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2024-11-19 16:40:56,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 16:40:56,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-19 16:40:56,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:40:56,076 INFO L225 Difference]: With dead ends: 56 [2024-11-19 16:40:56,076 INFO L226 Difference]: Without dead ends: 43 [2024-11-19 16:40:56,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 16:40:56,077 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:40:56,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 53 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:40:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-19 16:40:56,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2024-11-19 16:40:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 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) [2024-11-19 16:40:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-19 16:40:56,081 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 15 [2024-11-19 16:40:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:40:56,081 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-19 16:40:56,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:40:56,082 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-19 16:40:56,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 16:40:56,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:40:56,082 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:40:56,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 16:40:56,282 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,SelfDestructingSolverStorable3 [2024-11-19 16:40:56,283 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:40:56,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:40:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2044266853, now seen corresponding path program 2 times [2024-11-19 16:40:56,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:40:56,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886625953] [2024-11-19 16:40:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:40:56,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:40:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:40:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 16:40:56,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:40:56,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886625953] [2024-11-19 16:40:56,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886625953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:40:56,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772157897] [2024-11-19 16:40:56,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 16:40:56,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:40:56,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:40:56,479 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) [2024-11-19 16:40:56,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 16:40:56,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 16:40:56,548 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:40:56,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 16:40:56,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:40:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 16:40:56,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:40:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 16:40:56,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772157897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:40:56,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:40:56,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-19 16:40:56,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133795867] [2024-11-19 16:40:56,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:40:56,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 16:40:56,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:40:56,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 16:40:56,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2024-11-19 16:40:56,748 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 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) [2024-11-19 16:40:56,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:40:56,804 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-11-19 16:40:56,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 16:40:56,805 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-19 16:40:56,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:40:56,805 INFO L225 Difference]: With dead ends: 55 [2024-11-19 16:40:56,805 INFO L226 Difference]: Without dead ends: 39 [2024-11-19 16:40:56,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2024-11-19 16:40:56,806 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:40:56,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:40:56,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-19 16:40:56,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-19 16:40:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 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) [2024-11-19 16:40:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-11-19 16:40:56,815 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 24 [2024-11-19 16:40:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:40:56,815 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-11-19 16:40:56,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 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) [2024-11-19 16:40:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-11-19 16:40:56,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-19 16:40:56,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:40:56,817 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:40:56,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 16:40:57,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:40:57,022 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:40:57,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:40:57,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2120045553, now seen corresponding path program 3 times [2024-11-19 16:40:57,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:40:57,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380187373] [2024-11-19 16:40:57,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:40:57,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:40:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:40:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 16:40:57,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:40:57,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380187373] [2024-11-19 16:40:57,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380187373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:40:57,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526962873] [2024-11-19 16:40:57,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 16:40:57,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:40:57,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:40:57,307 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) [2024-11-19 16:40:57,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 16:40:57,383 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 16:40:57,383 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:40:57,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 16:40:57,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:40:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-19 16:40:57,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:40:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-19 16:40:57,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526962873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:40:57,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:40:57,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-11-19 16:40:57,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525281135] [2024-11-19 16:40:57,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:40:57,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 16:40:57,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:40:57,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 16:40:57,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-19 16:40:57,472 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 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) [2024-11-19 16:40:57,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:40:57,567 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2024-11-19 16:40:57,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 16:40:57,568 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-19 16:40:57,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:40:57,568 INFO L225 Difference]: With dead ends: 106 [2024-11-19 16:40:57,569 INFO L226 Difference]: Without dead ends: 90 [2024-11-19 16:40:57,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-19 16:40:57,569 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 61 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:40:57,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 95 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:40:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-19 16:40:57,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 53. [2024-11-19 16:40:57,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 states have internal predecessors, (56), 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) [2024-11-19 16:40:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2024-11-19 16:40:57,576 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 36 [2024-11-19 16:40:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:40:57,576 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2024-11-19 16:40:57,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 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) [2024-11-19 16:40:57,578 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2024-11-19 16:40:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 16:40:57,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:40:57,580 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:40:57,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 16:40:57,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:40:57,781 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:40:57,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:40:57,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1925935603, now seen corresponding path program 4 times [2024-11-19 16:40:57,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:40:57,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181180482] [2024-11-19 16:40:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:40:57,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:40:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:40:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-19 16:40:57,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:40:57,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181180482] [2024-11-19 16:40:57,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181180482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:40:57,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174111969] [2024-11-19 16:40:57,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 16:40:57,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:40:57,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:40:57,945 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:40:57,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 16:40:58,222 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 16:40:58,222 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:40:58,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 16:40:58,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:40:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-19 16:40:58,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:40:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-19 16:40:58,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174111969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:40:58,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:40:58,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-19 16:40:58,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436749236] [2024-11-19 16:40:58,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:40:58,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 16:40:58,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:40:58,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 16:40:58,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-19 16:40:58,350 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 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) [2024-11-19 16:40:58,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:40:58,446 INFO L93 Difference]: Finished difference Result 177 states and 202 transitions. [2024-11-19 16:40:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 16:40:58,447 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-19 16:40:58,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:40:58,448 INFO L225 Difference]: With dead ends: 177 [2024-11-19 16:40:58,448 INFO L226 Difference]: Without dead ends: 169 [2024-11-19 16:40:58,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-19 16:40:58,449 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 179 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:40:58,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 118 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:40:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-19 16:40:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 77. [2024-11-19 16:40:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 76 states have internal predecessors, (80), 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) [2024-11-19 16:40:58,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2024-11-19 16:40:58,459 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 50 [2024-11-19 16:40:58,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:40:58,459 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2024-11-19 16:40:58,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 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) [2024-11-19 16:40:58,460 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2024-11-19 16:40:58,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-19 16:40:58,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:40:58,460 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:40:58,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 16:40:58,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:40:58,661 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:40:58,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:40:58,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2026747379, now seen corresponding path program 5 times [2024-11-19 16:40:58,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:40:58,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087291315] [2024-11-19 16:40:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:40:58,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:40:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:40:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-19 16:40:58,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:40:58,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087291315] [2024-11-19 16:40:58,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087291315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:40:58,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377182212] [2024-11-19 16:40:58,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 16:40:58,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:40:58,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:40:58,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:40:59,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 16:41:00,848 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-19 16:41:00,849 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:41:00,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 16:41:00,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:41:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-19 16:41:01,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:41:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-19 16:41:01,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377182212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:41:01,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:41:01,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 44 [2024-11-19 16:41:01,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105787216] [2024-11-19 16:41:01,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:41:01,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-19 16:41:01,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:41:01,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-19 16:41:01,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 16:41:01,520 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 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) [2024-11-19 16:41:01,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:41:01,826 INFO L93 Difference]: Finished difference Result 384 states and 435 transitions. [2024-11-19 16:41:01,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-19 16:41:01,826 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-19 16:41:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:41:01,827 INFO L225 Difference]: With dead ends: 384 [2024-11-19 16:41:01,827 INFO L226 Difference]: Without dead ends: 332 [2024-11-19 16:41:01,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 16:41:01,829 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 446 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 16:41:01,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 231 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 16:41:01,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-19 16:41:01,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 127. [2024-11-19 16:41:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0317460317460319) internal successors, (130), 126 states have internal predecessors, (130), 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) [2024-11-19 16:41:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 130 transitions. [2024-11-19 16:41:01,841 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 130 transitions. Word has length 74 [2024-11-19 16:41:01,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:41:01,841 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 130 transitions. [2024-11-19 16:41:01,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 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) [2024-11-19 16:41:01,841 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 130 transitions. [2024-11-19 16:41:01,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-19 16:41:01,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:41:01,843 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:41:01,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 16:41:02,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:41:02,047 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:41:02,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:41:02,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1731189877, now seen corresponding path program 6 times [2024-11-19 16:41:02,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:41:02,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620235153] [2024-11-19 16:41:02,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:41:02,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:41:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:41:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1479 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-11-19 16:41:02,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:41:02,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620235153] [2024-11-19 16:41:02,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620235153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:41:02,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142053459] [2024-11-19 16:41:02,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 16:41:02,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:41:02,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:41:02,450 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:41:02,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 16:41:02,548 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-19 16:41:02,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:41:02,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 16:41:02,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:41:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1479 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2024-11-19 16:41:03,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:41:03,383 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 16:41:03,384 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 28 treesize of output 19 [2024-11-19 16:41:03,392 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 16:41:03,392 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 24 treesize of output 12 [2024-11-19 16:41:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1479 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2024-11-19 16:41:03,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142053459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:41:03,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:41:03,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 7] total 25 [2024-11-19 16:41:03,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098014143] [2024-11-19 16:41:03,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:41:03,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 16:41:03,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:41:03,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 16:41:03,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2024-11-19 16:41:03,410 INFO L87 Difference]: Start difference. First operand 127 states and 130 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 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) [2024-11-19 16:41:03,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:41:03,664 INFO L93 Difference]: Finished difference Result 235 states and 243 transitions. [2024-11-19 16:41:03,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 16:41:03,665 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-11-19 16:41:03,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:41:03,665 INFO L225 Difference]: With dead ends: 235 [2024-11-19 16:41:03,665 INFO L226 Difference]: Without dead ends: 135 [2024-11-19 16:41:03,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=366, Invalid=1194, Unknown=0, NotChecked=0, Total=1560 [2024-11-19 16:41:03,667 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 42 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:41:03,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 70 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:41:03,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-19 16:41:03,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2024-11-19 16:41:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 131 states have internal predecessors, (136), 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) [2024-11-19 16:41:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2024-11-19 16:41:03,673 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 124 [2024-11-19 16:41:03,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:41:03,673 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2024-11-19 16:41:03,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 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) [2024-11-19 16:41:03,674 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2024-11-19 16:41:03,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 16:41:03,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:41:03,675 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:41:03,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 16:41:03,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:41:03,883 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:41:03,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:41:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1864290304, now seen corresponding path program 1 times [2024-11-19 16:41:03,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:41:03,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701641356] [2024-11-19 16:41:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:41:03,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:41:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:41:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2024-11-19 16:41:03,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:41:03,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701641356] [2024-11-19 16:41:03,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701641356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:41:03,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:41:03,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 16:41:03,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712128691] [2024-11-19 16:41:03,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:41:03,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 16:41:03,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:41:03,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 16:41:03,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:41:03,978 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-11-19 16:41:03,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:41:03,982 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2024-11-19 16:41:03,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 16:41:03,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2024-11-19 16:41:03,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:41:03,983 INFO L225 Difference]: With dead ends: 139 [2024-11-19 16:41:03,983 INFO L226 Difference]: Without dead ends: 132 [2024-11-19 16:41:03,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:41:03,984 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:41:03,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:41:03,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-19 16:41:03,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-19 16:41:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 131 states have internal predecessors, (134), 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) [2024-11-19 16:41:03,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2024-11-19 16:41:03,990 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 129 [2024-11-19 16:41:03,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:41:03,991 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2024-11-19 16:41:03,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-11-19 16:41:03,991 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2024-11-19 16:41:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-19 16:41:03,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:41:03,992 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 13, 13, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:41:03,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 16:41:03,992 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:41:03,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:41:03,992 INFO L85 PathProgramCache]: Analyzing trace with hash -665635766, now seen corresponding path program 1 times [2024-11-19 16:41:03,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:41:03,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999368827] [2024-11-19 16:41:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:41:03,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:41:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:41:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-11-19 16:41:04,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:41:04,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999368827] [2024-11-19 16:41:04,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999368827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:41:04,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574953658] [2024-11-19 16:41:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:41:04,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:41:04,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:41:04,443 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:41:04,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 16:41:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:41:04,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 16:41:04,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:41:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-11-19 16:41:04,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:41:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-11-19 16:41:05,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574953658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:41:05,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:41:05,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 44 [2024-11-19 16:41:05,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858430902] [2024-11-19 16:41:05,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:41:05,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-19 16:41:05,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:41:05,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-19 16:41:05,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=855, Invalid=1037, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 16:41:05,244 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 44 states have internal predecessors, (98), 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) [2024-11-19 16:41:05,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:41:05,333 INFO L93 Difference]: Finished difference Result 265 states and 283 transitions. [2024-11-19 16:41:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 16:41:05,333 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 44 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-11-19 16:41:05,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:41:05,335 INFO L225 Difference]: With dead ends: 265 [2024-11-19 16:41:05,335 INFO L226 Difference]: Without dead ends: 162 [2024-11-19 16:41:05,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=855, Invalid=1037, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 16:41:05,337 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:41:05,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:41:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-19 16:41:05,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-11-19 16:41:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.0186335403726707) internal successors, (164), 161 states have internal predecessors, (164), 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) [2024-11-19 16:41:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2024-11-19 16:41:05,348 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 131 [2024-11-19 16:41:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:41:05,348 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2024-11-19 16:41:05,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 44 states have internal predecessors, (98), 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) [2024-11-19 16:41:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2024-11-19 16:41:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-19 16:41:05,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:41:05,350 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 28, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:41:05,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 16:41:05,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 16:41:05,561 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:41:05,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:41:05,561 INFO L85 PathProgramCache]: Analyzing trace with hash -392333076, now seen corresponding path program 2 times [2024-11-19 16:41:05,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:41:05,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466996183] [2024-11-19 16:41:05,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:41:05,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:41:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:41:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-11-19 16:41:06,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:41:06,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466996183] [2024-11-19 16:41:06,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466996183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:41:06,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86024065] [2024-11-19 16:41:06,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 16:41:06,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:41:06,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:41:06,563 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:41:06,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 16:41:06,764 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 16:41:06,764 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:41:06,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 16:41:06,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:41:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-11-19 16:41:07,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:41:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-11-19 16:41:09,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86024065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:41:09,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:41:09,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 89 [2024-11-19 16:41:09,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682823668] [2024-11-19 16:41:09,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:41:09,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-19 16:41:09,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:41:09,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-19 16:41:09,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3510, Invalid=4322, Unknown=0, NotChecked=0, Total=7832 [2024-11-19 16:41:09,045 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand has 89 states, 89 states have (on average 2.1123595505617976) internal successors, (188), 89 states have internal predecessors, (188), 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) [2024-11-19 16:41:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:41:09,226 INFO L93 Difference]: Finished difference Result 325 states and 358 transitions. [2024-11-19 16:41:09,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-19 16:41:09,227 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.1123595505617976) internal successors, (188), 89 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-19 16:41:09,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:41:09,227 INFO L225 Difference]: With dead ends: 325 [2024-11-19 16:41:09,227 INFO L226 Difference]: Without dead ends: 222 [2024-11-19 16:41:09,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3510, Invalid=4322, Unknown=0, NotChecked=0, Total=7832 [2024-11-19 16:41:09,229 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:41:09,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 81 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:41:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-19 16:41:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2024-11-19 16:41:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.0135746606334841) internal successors, (224), 221 states have internal predecessors, (224), 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) [2024-11-19 16:41:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 224 transitions. [2024-11-19 16:41:09,236 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 224 transitions. Word has length 161 [2024-11-19 16:41:09,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:41:09,236 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 224 transitions. [2024-11-19 16:41:09,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.1123595505617976) internal successors, (188), 89 states have internal predecessors, (188), 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) [2024-11-19 16:41:09,237 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 224 transitions. [2024-11-19 16:41:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-19 16:41:09,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:41:09,240 INFO L215 NwaCegarLoop]: trace histogram [58, 58, 30, 30, 30, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:41:09,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 16:41:09,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:41:09,440 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:41:09,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:41:09,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1639756880, now seen corresponding path program 3 times [2024-11-19 16:41:09,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:41:09,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228938422] [2024-11-19 16:41:09,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:41:09,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:41:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:41:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4702 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-11-19 16:41:12,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:41:12,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228938422] [2024-11-19 16:41:12,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228938422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:41:12,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862208169] [2024-11-19 16:41:12,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 16:41:12,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:41:12,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:41:12,265 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:41:12,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 16:41:12,470 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 16:41:12,470 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:41:12,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 16:41:12,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:41:12,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 16:41:13,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 16:41:13,131 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 22 treesize of output 16 [2024-11-19 16:41:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4702 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 4499 trivial. 0 not checked. [2024-11-19 16:41:13,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:41:13,602 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 44 treesize of output 38 [2024-11-19 16:41:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4702 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 4499 trivial. 0 not checked. [2024-11-19 16:41:14,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862208169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:41:14,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:41:14,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 9, 9] total 72 [2024-11-19 16:41:14,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828747876] [2024-11-19 16:41:14,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:41:14,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-19 16:41:14,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:41:14,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-19 16:41:14,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1983, Invalid=3129, Unknown=0, NotChecked=0, Total=5112 [2024-11-19 16:41:14,015 INFO L87 Difference]: Start difference. First operand 222 states and 224 transitions. Second operand has 72 states, 72 states have (on average 2.138888888888889) internal successors, (154), 72 states have internal predecessors, (154), 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) [2024-11-19 16:41:18,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 16:41:22,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:41:22,778 INFO L93 Difference]: Finished difference Result 318 states and 323 transitions. [2024-11-19 16:41:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-19 16:41:22,778 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.138888888888889) internal successors, (154), 72 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-19 16:41:22,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:41:22,779 INFO L225 Difference]: With dead ends: 318 [2024-11-19 16:41:22,779 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 16:41:22,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 429 SyntacticMatches, 2 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10124 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=11884, Invalid=26336, Unknown=0, NotChecked=0, Total=38220 [2024-11-19 16:41:22,785 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-19 16:41:22,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-19 16:41:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 16:41:22,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 16:41:22,786 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) [2024-11-19 16:41:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 16:41:22,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 221 [2024-11-19 16:41:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:41:22,786 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 16:41:22,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.138888888888889) internal successors, (154), 72 states have internal predecessors, (154), 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) [2024-11-19 16:41:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 16:41:22,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 16:41:22,790 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-19 16:41:22,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 16:41:22,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 16:41:22,993 INFO L407 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1, 1, 1] [2024-11-19 16:41:22,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-19 16:41:23,575 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 16:41:23,588 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-19 16:41:23,589 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~flag~0 [2024-11-19 16:41:23,589 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#a~0!offset [2024-11-19 16:41:23,589 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~a!offset [2024-11-19 16:41:23,590 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~a!base [2024-11-19 16:41:23,590 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#a~0!base [2024-11-19 16:41:23,590 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~flag~0 [2024-11-19 16:41:23,590 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#a~0!offset [2024-11-19 16:41:23,590 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~a!offset [2024-11-19 16:41:23,590 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~a!base [2024-11-19 16:41:23,590 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#a~0!base [2024-11-19 16:41:23,593 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_$Pointer$#1.offset [2024-11-19 16:41:23,593 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_$Pointer$#1.offset,GLOBAL] [2024-11-19 16:41:23,593 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_$Pointer$#1.offset,GLOBAL],[IdentifierExpression[~#a~0!base,]]] [2024-11-19 16:41:23,593 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_$Pointer$#1.base [2024-11-19 16:41:23,593 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_$Pointer$#1.base,GLOBAL] [2024-11-19 16:41:23,593 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_$Pointer$#1.base,GLOBAL],[IdentifierExpression[~#a~0!base,]]] [2024-11-19 16:41:23,593 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_$Pointer$#1.base [2024-11-19 16:41:23,593 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_$Pointer$#1.base,GLOBAL] [2024-11-19 16:41:23,593 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_$Pointer$#1.base,GLOBAL],[IdentifierExpression[~#a~0!base,]]] [2024-11-19 16:41:23,594 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#a~0!offset [2024-11-19 16:41:23,594 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_$Pointer$#1.base [2024-11-19 16:41:23,594 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_$Pointer$#1.base,GLOBAL] [2024-11-19 16:41:23,594 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_$Pointer$#1.base,GLOBAL],[IdentifierExpression[~#a~0!base,]]] [2024-11-19 16:41:23,594 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#a~0!offset [2024-11-19 16:41:23,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:41:23 BoogieIcfgContainer [2024-11-19 16:41:23,595 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 16:41:23,596 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 16:41:23,596 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 16:41:23,596 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 16:41:23,596 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:40:54" (3/4) ... [2024-11-19 16:41:23,598 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 16:41:23,604 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-19 16:41:23,605 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-19 16:41:23,605 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 16:41:23,605 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 16:41:23,685 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 16:41:23,685 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 16:41:23,685 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 16:41:23,685 INFO L158 Benchmark]: Toolchain (without parser) took 29347.50ms. Allocated memory was 159.4MB in the beginning and 520.1MB in the end (delta: 360.7MB). Free memory was 88.3MB in the beginning and 362.6MB in the end (delta: -274.3MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. [2024-11-19 16:41:23,686 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory was 110.2MB in the beginning and 110.1MB in the end (delta: 85.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 16:41:23,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.15ms. Allocated memory is still 159.4MB. Free memory was 88.0MB in the beginning and 75.2MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 16:41:23,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.82ms. Allocated memory is still 159.4MB. Free memory was 75.2MB in the beginning and 73.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 16:41:23,686 INFO L158 Benchmark]: Boogie Preprocessor took 49.08ms. Allocated memory is still 159.4MB. Free memory was 73.6MB in the beginning and 128.4MB in the end (delta: -54.8MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2024-11-19 16:41:23,686 INFO L158 Benchmark]: RCFGBuilder took 292.87ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 128.3MB in the beginning and 165.0MB in the end (delta: -36.6MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2024-11-19 16:41:23,687 INFO L158 Benchmark]: TraceAbstraction took 28672.48ms. Allocated memory was 205.5MB in the beginning and 520.1MB in the end (delta: 314.6MB). Free memory was 163.9MB in the beginning and 366.8MB in the end (delta: -202.9MB). Peak memory consumption was 300.6MB. Max. memory is 16.1GB. [2024-11-19 16:41:23,687 INFO L158 Benchmark]: Witness Printer took 89.16ms. Allocated memory is still 520.1MB. Free memory was 366.8MB in the beginning and 362.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 16:41:23,688 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 159.4MB. Free memory was 110.2MB in the beginning and 110.1MB in the end (delta: 85.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.15ms. Allocated memory is still 159.4MB. Free memory was 88.0MB in the beginning and 75.2MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.82ms. Allocated memory is still 159.4MB. Free memory was 75.2MB in the beginning and 73.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.08ms. Allocated memory is still 159.4MB. Free memory was 73.6MB in the beginning and 128.4MB in the end (delta: -54.8MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * RCFGBuilder took 292.87ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 128.3MB in the beginning and 165.0MB in the end (delta: -36.6MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * TraceAbstraction took 28672.48ms. Allocated memory was 205.5MB in the beginning and 520.1MB in the end (delta: 314.6MB). Free memory was 163.9MB in the beginning and 366.8MB in the end (delta: -202.9MB). Peak memory consumption was 300.6MB. Max. memory is 16.1GB. * Witness Printer took 89.16ms. Allocated memory is still 520.1MB. Free memory was 366.8MB in the beginning and 362.6MB 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: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~flag~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#a~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~a!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~a!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#a~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~flag~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#a~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~a!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~a!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#a~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_$Pointer$#1.offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_$Pointer$#1.offset,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_$Pointer$#1.offset,GLOBAL],[IdentifierExpression[~#a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_$Pointer$#1.base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_$Pointer$#1.base,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_$Pointer$#1.base,GLOBAL],[IdentifierExpression[~#a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_$Pointer$#1.base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_$Pointer$#1.base,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_$Pointer$#1.base,GLOBAL],[IdentifierExpression[~#a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#a~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_$Pointer$#1.base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_$Pointer$#1.base,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_$Pointer$#1.base,GLOBAL],[IdentifierExpression[~#a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#a~0!offset * 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: 15]: 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 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.0s, OverallIterations: 13, TraceHistogramMax: 58, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 785 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 785 mSDsluCounter, 947 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 757 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1063 IncrementalHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 190 mSDtfsCounter, 1063 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1990 GetRequests, 1525 SyntacticMatches, 3 SemanticMatches, 462 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11285 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=12, InterpolantAutomatonStates: 349, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 363 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 1853 NumberOfCodeBlocks, 1543 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 2657 ConstructedInterpolants, 1 QuantifiedInterpolants, 12983 SizeOfPredicates, 17 NumberOfNonLiveVariables, 3581 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 32 InterpolantComputations, 4 PerfectInterpolantSequences, 25193/33065 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 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((size == 100000) || ((size == 100000) && (i == 0))) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (1 <= flag) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((0 < flag) || ((i <= 99999) && (flag == 0))) || ((i == 0) && (flag == 0))) RESULT: Ultimate proved your program to be correct! [2024-11-19 16:41:23,708 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