/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/reducercommutativity/sum40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:16:38,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:16:38,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:16:38,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:16:38,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:16:38,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:16:38,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:16:38,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:16:38,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:16:38,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:16:38,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:16:38,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:16:38,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:16:38,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:16:38,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:16:38,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:16:38,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:16:38,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:16:38,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:16:38,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:16:38,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:16:38,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:16:38,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:16:38,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:16:38,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:16:38,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:16:38,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:16:38,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:16:38,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:16:38,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:16:38,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:16:38,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:16:38,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:16:38,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:16:38,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:16:38,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:16:38,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:16:38,919 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:16:38,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:16:38,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:16:38,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:16:38,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:16:38,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:16:38,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:16:38,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:16:38,928 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:16:38,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:16:38,930 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:16:38,931 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:16:38,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:16:38,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:16:38,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:16:38,932 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:16:38,932 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:16:38,932 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:16:38,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:16:38,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:16:38,933 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:16:38,933 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:16:38,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:16:38,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:16:38,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:16:38,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:16:38,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:16:38,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:16:38,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:16:38,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:16:38,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:16:39,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:16:39,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:16:39,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:16:39,436 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:16:39,436 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:16:39,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sum40-1.i [2022-10-15 17:16:39,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a5618594/d5762c1187264dfc8e13fc23dff932d2/FLAGfa48450d8 [2022-10-15 17:16:40,167 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:16:40,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum40-1.i [2022-10-15 17:16:40,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a5618594/d5762c1187264dfc8e13fc23dff932d2/FLAGfa48450d8 [2022-10-15 17:16:40,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a5618594/d5762c1187264dfc8e13fc23dff932d2 [2022-10-15 17:16:40,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:16:40,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:16:40,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:16:40,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:16:40,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:16:40,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@477cf5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40, skipping insertion in model container [2022-10-15 17:16:40,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:16:40,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:16:40,772 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum40-1.i[1167,1180] [2022-10-15 17:16:40,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:16:40,784 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:16:40,806 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum40-1.i[1167,1180] [2022-10-15 17:16:40,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:16:40,823 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:16:40,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40 WrapperNode [2022-10-15 17:16:40,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:16:40,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:16:40,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:16:40,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:16:40,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,867 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-10-15 17:16:40,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:16:40,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:16:40,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:16:40,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:16:40,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,900 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:16:40,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:16:40,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:16:40,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:16:40,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40" (1/1) ... [2022-10-15 17:16:40,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:16:40,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:40,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:16:40,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:16:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:16:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-10-15 17:16:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-10-15 17:16:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:16:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:16:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:16:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:16:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:16:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:16:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:16:41,090 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:16:41,093 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:16:41,463 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:16:41,480 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:16:41,493 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 17:16:41,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:16:41 BoogieIcfgContainer [2022-10-15 17:16:41,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:16:41,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:16:41,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:16:41,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:16:41,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:16:40" (1/3) ... [2022-10-15 17:16:41,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251a5f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:16:41, skipping insertion in model container [2022-10-15 17:16:41,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:16:40" (2/3) ... [2022-10-15 17:16:41,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251a5f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:16:41, skipping insertion in model container [2022-10-15 17:16:41,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:16:41" (3/3) ... [2022-10-15 17:16:41,537 INFO L112 eAbstractionObserver]: Analyzing ICFG sum40-1.i [2022-10-15 17:16:41,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:16:41,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-10-15 17:16:41,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:16:41,702 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@b8d9b03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:16:41,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-10-15 17:16:41,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 51 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:16:41,732 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:41,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:16:41,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:41,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:41,744 INFO L85 PathProgramCache]: Analyzing trace with hash 891886193, now seen corresponding path program 1 times [2022-10-15 17:16:41,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:41,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172508064] [2022-10-15 17:16:41,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:41,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:16:42,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:42,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172508064] [2022-10-15 17:16:42,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172508064] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:16:42,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:16:42,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:16:42,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881485435] [2022-10-15 17:16:42,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:16:42,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:16:42,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:42,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:16:42,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:16:42,241 INFO L87 Difference]: Start difference. First operand has 56 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 51 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:16:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:42,461 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2022-10-15 17:16:42,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:16:42,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:16:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:42,480 INFO L225 Difference]: With dead ends: 47 [2022-10-15 17:16:42,481 INFO L226 Difference]: Without dead ends: 45 [2022-10-15 17:16:42,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:16:42,488 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 45 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:42,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 62 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:16:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-10-15 17:16:42,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-10-15 17:16:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.4) internal successors, (42), 40 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-10-15 17:16:42,540 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 6 [2022-10-15 17:16:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:42,541 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-10-15 17:16:42,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:16:42,542 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-10-15 17:16:42,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:16:42,542 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:42,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:16:42,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:16:42,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting sumErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:42,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash 891886194, now seen corresponding path program 1 times [2022-10-15 17:16:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:42,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603731178] [2022-10-15 17:16:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:42,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:16:42,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:42,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603731178] [2022-10-15 17:16:42,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603731178] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:16:42,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:16:42,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:16:42,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856136852] [2022-10-15 17:16:42,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:16:42,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:16:42,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:42,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:16:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:16:42,795 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:16:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:42,934 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-10-15 17:16:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:16:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:16:42,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:42,937 INFO L225 Difference]: With dead ends: 43 [2022-10-15 17:16:42,937 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 17:16:42,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:16:42,939 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:42,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 59 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:16:42,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 17:16:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-10-15 17:16:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.1875) internal successors, (38), 36 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-10-15 17:16:42,949 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 6 [2022-10-15 17:16:42,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:42,950 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-10-15 17:16:42,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:16:42,950 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-10-15 17:16:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:16:42,951 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:42,951 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:42,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:16:42,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sumErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:42,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:42,953 INFO L85 PathProgramCache]: Analyzing trace with hash -312892363, now seen corresponding path program 1 times [2022-10-15 17:16:42,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:42,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687738891] [2022-10-15 17:16:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:42,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:16:43,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:43,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687738891] [2022-10-15 17:16:43,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687738891] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:16:43,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360813632] [2022-10-15 17:16:43,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:43,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:43,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:43,232 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) [2022-10-15 17:16:43,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:16:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:43,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 17:16:43,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:16:43,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:16:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:16:43,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:16:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:16:43,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360813632] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:16:43,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:16:43,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-10-15 17:16:43,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335886696] [2022-10-15 17:16:43,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:16:43,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 17:16:43,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:43,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 17:16:43,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:16:43,694 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:16:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:43,974 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-10-15 17:16:43,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:16:43,975 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 17:16:43,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:43,978 INFO L225 Difference]: With dead ends: 59 [2022-10-15 17:16:43,979 INFO L226 Difference]: Without dead ends: 59 [2022-10-15 17:16:43,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-10-15 17:16:43,981 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 94 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:43,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 117 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:16:43,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-15 17:16:43,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2022-10-15 17:16:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 48 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:43,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2022-10-15 17:16:43,995 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 10 [2022-10-15 17:16:43,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:43,996 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2022-10-15 17:16:43,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:16:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2022-10-15 17:16:43,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-15 17:16:43,998 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:43,998 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-15 17:16:44,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 17:16:44,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:44,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sumErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:44,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1997187198, now seen corresponding path program 2 times [2022-10-15 17:16:44,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:44,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321289707] [2022-10-15 17:16:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:44,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:16:44,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:44,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321289707] [2022-10-15 17:16:44,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321289707] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:16:44,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744888530] [2022-10-15 17:16:44,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:16:44,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:44,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:44,605 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) [2022-10-15 17:16:44,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:16:44,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:16:44,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:16:44,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 17:16:44,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:16:44,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:16:45,027 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:16:45,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:16:45,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744888530] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:16:45,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:16:45,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2022-10-15 17:16:45,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173414311] [2022-10-15 17:16:45,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:16:45,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 17:16:45,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:45,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 17:16:45,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:16:45,031 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:16:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:45,272 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-10-15 17:16:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:16:45,274 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-15 17:16:45,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:45,279 INFO L225 Difference]: With dead ends: 54 [2022-10-15 17:16:45,280 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 17:16:45,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-10-15 17:16:45,282 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:45,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 84 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:16:45,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 17:16:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2022-10-15 17:16:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 38 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-10-15 17:16:45,291 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 22 [2022-10-15 17:16:45,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:45,292 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-10-15 17:16:45,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:16:45,292 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-10-15 17:16:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-15 17:16:45,294 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:45,294 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:45,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 17:16:45,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 17:16:45,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:45,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:45,509 INFO L85 PathProgramCache]: Analyzing trace with hash 269996338, now seen corresponding path program 1 times [2022-10-15 17:16:45,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:45,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36441250] [2022-10-15 17:16:45,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:45,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:45,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:16:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:45,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 17:16:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-15 17:16:45,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:45,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36441250] [2022-10-15 17:16:45,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36441250] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:16:45,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:16:45,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:16:45,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052183950] [2022-10-15 17:16:45,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:16:45,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:16:45,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:16:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:16:45,761 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:16:45,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:45,821 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2022-10-15 17:16:45,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:16:45,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-10-15 17:16:45,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:45,826 INFO L225 Difference]: With dead ends: 48 [2022-10-15 17:16:45,826 INFO L226 Difference]: Without dead ends: 48 [2022-10-15 17:16:45,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:16:45,837 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 42 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:45,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 55 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:16:45,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-15 17:16:45,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-10-15 17:16:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.131578947368421) internal successors, (43), 41 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2022-10-15 17:16:45,854 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 42 [2022-10-15 17:16:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:45,854 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2022-10-15 17:16:45,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:16:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2022-10-15 17:16:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-15 17:16:45,860 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:45,861 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:45,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:16:45,861 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:45,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1595478873, now seen corresponding path program 1 times [2022-10-15 17:16:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:45,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354861872] [2022-10-15 17:16:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:45,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:16:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:46,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 17:16:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-15 17:16:46,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:46,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354861872] [2022-10-15 17:16:46,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354861872] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:16:46,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976943570] [2022-10-15 17:16:46,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:46,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:46,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:46,166 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) [2022-10-15 17:16:46,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 17:16:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:46,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:16:46,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:16:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-15 17:16:46,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:16:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 17:16:46,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976943570] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:16:46,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:16:46,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-10-15 17:16:46,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648611983] [2022-10-15 17:16:46,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:16:46,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 17:16:46,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:46,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 17:16:46,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:16:46,400 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 17:16:46,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:46,533 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2022-10-15 17:16:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:16:46,533 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2022-10-15 17:16:46,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:46,534 INFO L225 Difference]: With dead ends: 63 [2022-10-15 17:16:46,535 INFO L226 Difference]: Without dead ends: 63 [2022-10-15 17:16:46,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:16:46,536 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:46,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 90 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:16:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-10-15 17:16:46,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-10-15 17:16:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 58 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2022-10-15 17:16:46,544 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 47 [2022-10-15 17:16:46,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:46,544 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2022-10-15 17:16:46,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 17:16:46,545 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2022-10-15 17:16:46,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-15 17:16:46,547 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:46,548 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:46,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 17:16:46,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:46,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:46,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1745785976, now seen corresponding path program 1 times [2022-10-15 17:16:46,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:46,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926448930] [2022-10-15 17:16:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:46,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:16:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:47,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 17:16:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:47,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-15 17:16:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-10-15 17:16:47,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:47,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926448930] [2022-10-15 17:16:47,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926448930] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:16:47,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323854601] [2022-10-15 17:16:47,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:47,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:47,119 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) [2022-10-15 17:16:47,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:16:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:47,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:16:47,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:16:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-10-15 17:16:47,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:16:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-10-15 17:16:47,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323854601] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:16:47,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:16:47,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-10-15 17:16:47,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535667861] [2022-10-15 17:16:47,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:16:47,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 17:16:47,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:47,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 17:16:47,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:16:47,449 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:16:47,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:47,530 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2022-10-15 17:16:47,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:16:47,531 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 117 [2022-10-15 17:16:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:47,532 INFO L225 Difference]: With dead ends: 95 [2022-10-15 17:16:47,532 INFO L226 Difference]: Without dead ends: 95 [2022-10-15 17:16:47,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:16:47,534 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 63 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:47,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:16:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-15 17:16:47,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-10-15 17:16:47,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 90 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2022-10-15 17:16:47,543 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 117 [2022-10-15 17:16:47,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:47,544 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2022-10-15 17:16:47,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:16:47,544 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2022-10-15 17:16:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-10-15 17:16:47,548 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:47,548 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:47,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 17:16:47,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:47,762 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:47,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash -384938640, now seen corresponding path program 2 times [2022-10-15 17:16:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:47,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935179624] [2022-10-15 17:16:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:47,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:16:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:48,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 17:16:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:48,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-10-15 17:16:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3592 backedges. 0 proven. 2010 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2022-10-15 17:16:48,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:48,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935179624] [2022-10-15 17:16:48,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935179624] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:16:48,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999466341] [2022-10-15 17:16:48,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:16:48,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:48,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:48,635 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) [2022-10-15 17:16:48,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:16:48,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:16:48,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:16:48,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:16:48,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:16:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3592 backedges. 1628 proven. 378 refuted. 0 times theorem prover too weak. 1586 trivial. 0 not checked. [2022-10-15 17:16:48,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:16:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3592 backedges. 0 proven. 2010 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2022-10-15 17:16:49,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999466341] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:16:49,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:16:49,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2022-10-15 17:16:49,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307499445] [2022-10-15 17:16:49,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:16:49,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-15 17:16:49,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:49,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-15 17:16:49,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-10-15 17:16:49,379 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:16:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:49,536 INFO L93 Difference]: Finished difference Result 159 states and 162 transitions. [2022-10-15 17:16:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 17:16:49,537 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 213 [2022-10-15 17:16:49,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:49,539 INFO L225 Difference]: With dead ends: 159 [2022-10-15 17:16:49,539 INFO L226 Difference]: Without dead ends: 159 [2022-10-15 17:16:49,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-10-15 17:16:49,541 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 135 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:49,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 131 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:16:49,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-10-15 17:16:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-10-15 17:16:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 153 states have (on average 1.0196078431372548) internal successors, (156), 154 states have internal predecessors, (156), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2022-10-15 17:16:49,554 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 213 [2022-10-15 17:16:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:49,555 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2022-10-15 17:16:49,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:16:49,555 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2022-10-15 17:16:49,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-10-15 17:16:49,563 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:49,563 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 90, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:49,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:16:49,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:49,778 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:49,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:49,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1316392640, now seen corresponding path program 3 times [2022-10-15 17:16:49,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:49,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945698608] [2022-10-15 17:16:49,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:49,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:51,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:16:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-10-15 17:16:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-10-15 17:16:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16312 backedges. 0 proven. 9098 refuted. 0 times theorem prover too weak. 7214 trivial. 0 not checked. [2022-10-15 17:16:52,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:52,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945698608] [2022-10-15 17:16:52,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945698608] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:16:52,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525495655] [2022-10-15 17:16:52,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:16:52,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:52,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:52,598 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) [2022-10-15 17:16:52,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 17:16:52,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-15 17:16:52,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:16:52,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:16:52,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:16:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16312 backedges. 7330 proven. 7 refuted. 0 times theorem prover too weak. 8975 trivial. 0 not checked. [2022-10-15 17:16:52,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:16:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 16312 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16305 trivial. 0 not checked. [2022-10-15 17:16:52,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525495655] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:16:52,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:16:52,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 5, 5] total 39 [2022-10-15 17:16:52,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063047331] [2022-10-15 17:16:52,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:16:52,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-10-15 17:16:52,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:52,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-10-15 17:16:52,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=555, Invalid=927, Unknown=0, NotChecked=0, Total=1482 [2022-10-15 17:16:52,917 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand has 39 states, 39 states have (on average 4.948717948717949) internal successors, (193), 39 states have internal predecessors, (193), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 17:16:53,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:53,092 INFO L93 Difference]: Finished difference Result 186 states and 189 transitions. [2022-10-15 17:16:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-10-15 17:16:53,093 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.948717948717949) internal successors, (193), 39 states have internal predecessors, (193), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 405 [2022-10-15 17:16:53,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:53,095 INFO L225 Difference]: With dead ends: 186 [2022-10-15 17:16:53,096 INFO L226 Difference]: Without dead ends: 186 [2022-10-15 17:16:53,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=555, Invalid=927, Unknown=0, NotChecked=0, Total=1482 [2022-10-15 17:16:53,098 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 129 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:53,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 298 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:16:53,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-10-15 17:16:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2022-10-15 17:16:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 177 states have (on average 1.0169491525423728) internal successors, (180), 178 states have internal predecessors, (180), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:53,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 186 transitions. [2022-10-15 17:16:53,110 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 186 transitions. Word has length 405 [2022-10-15 17:16:53,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:53,110 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 186 transitions. [2022-10-15 17:16:53,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.948717948717949) internal successors, (193), 39 states have internal predecessors, (193), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 17:16:53,111 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 186 transitions. [2022-10-15 17:16:53,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-10-15 17:16:53,120 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:53,121 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 93, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:53,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:16:53,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:53,336 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:53,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:53,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1792168707, now seen corresponding path program 4 times [2022-10-15 17:16:53,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:53,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729795682] [2022-10-15 17:16:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:53,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:54,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:16:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:55,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-10-15 17:16:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:55,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-10-15 17:16:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 17487 backedges. 0 proven. 9711 refuted. 0 times theorem prover too weak. 7776 trivial. 0 not checked. [2022-10-15 17:16:55,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:55,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729795682] [2022-10-15 17:16:55,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729795682] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:16:55,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356678461] [2022-10-15 17:16:55,949 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:16:55,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:55,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:55,951 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) [2022-10-15 17:16:55,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 17:16:56,333 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:16:56,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:16:56,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-15 17:16:56,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:16:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 17487 backedges. 7816 proven. 1891 refuted. 0 times theorem prover too weak. 7780 trivial. 0 not checked. [2022-10-15 17:16:56,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:16:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 17487 backedges. 0 proven. 9711 refuted. 0 times theorem prover too weak. 7776 trivial. 0 not checked. [2022-10-15 17:16:57,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356678461] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:16:57,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:16:57,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 42 [2022-10-15 17:16:57,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215130532] [2022-10-15 17:16:57,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:16:57,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-15 17:16:57,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:57,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-15 17:16:57,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:16:57,568 INFO L87 Difference]: Start difference. First operand 183 states and 186 transitions. Second operand has 42 states, 42 states have (on average 4.714285714285714) internal successors, (198), 42 states have internal predecessors, (198), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:16:57,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:57,750 INFO L93 Difference]: Finished difference Result 219 states and 222 transitions. [2022-10-15 17:16:57,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-15 17:16:57,751 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.714285714285714) internal successors, (198), 42 states have internal predecessors, (198), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 437 [2022-10-15 17:16:57,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:57,754 INFO L225 Difference]: With dead ends: 219 [2022-10-15 17:16:57,755 INFO L226 Difference]: Without dead ends: 219 [2022-10-15 17:16:57,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 848 SyntacticMatches, 24 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:16:57,757 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 120 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:57,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 240 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:16:57,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-10-15 17:16:57,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2022-10-15 17:16:57,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 213 states have (on average 1.0140845070422535) internal successors, (216), 214 states have internal predecessors, (216), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 222 transitions. [2022-10-15 17:16:57,778 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 222 transitions. Word has length 437 [2022-10-15 17:16:57,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:57,780 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 222 transitions. [2022-10-15 17:16:57,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.714285714285714) internal successors, (198), 42 states have internal predecessors, (198), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:16:57,781 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 222 transitions. [2022-10-15 17:16:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2022-10-15 17:16:57,793 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:57,793 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:57,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 17:16:57,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:57,996 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:57,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:57,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1588617246, now seen corresponding path program 5 times [2022-10-15 17:16:57,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:57,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152767995] [2022-10-15 17:16:57,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:57,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:58,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:16:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:58,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-10-15 17:16:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:58,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-10-15 17:16:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 29016 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:16:58,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:58,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152767995] [2022-10-15 17:16:58,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152767995] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:16:58,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030826798] [2022-10-15 17:16:58,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 17:16:58,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:58,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:58,879 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) [2022-10-15 17:16:58,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 17:17:00,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 81 check-sat command(s) [2022-10-15 17:17:00,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:17:00,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:17:00,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:17:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 29016 backedges. 12970 proven. 81 refuted. 0 times theorem prover too weak. 15965 trivial. 0 not checked. [2022-10-15 17:17:00,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:17:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 29016 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:17:00,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030826798] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:17:00,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:17:00,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-10-15 17:17:00,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045530226] [2022-10-15 17:17:00,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:17:00,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 17:17:00,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:17:00,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 17:17:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:17:00,911 INFO L87 Difference]: Start difference. First operand 219 states and 222 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:17:00,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:17:00,992 INFO L93 Difference]: Finished difference Result 259 states and 262 transitions. [2022-10-15 17:17:00,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:17:00,993 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 545 [2022-10-15 17:17:00,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:17:00,996 INFO L225 Difference]: With dead ends: 259 [2022-10-15 17:17:00,996 INFO L226 Difference]: Without dead ends: 259 [2022-10-15 17:17:00,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1103 GetRequests, 1088 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:17:00,998 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 56 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:17:00,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 204 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:17:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-10-15 17:17:01,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2022-10-15 17:17:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 253 states have (on average 1.0118577075098814) internal successors, (256), 254 states have internal predecessors, (256), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:17:01,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 262 transitions. [2022-10-15 17:17:01,008 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 262 transitions. Word has length 545 [2022-10-15 17:17:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:17:01,009 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 262 transitions. [2022-10-15 17:17:01,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:17:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 262 transitions. [2022-10-15 17:17:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2022-10-15 17:17:01,025 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:17:01,025 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 14, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:17:01,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 17:17:01,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-15 17:17:01,242 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:17:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:17:01,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1016102498, now seen corresponding path program 6 times [2022-10-15 17:17:01,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:17:01,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092538801] [2022-10-15 17:17:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:17:01,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:17:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:17:02,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:17:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:17:02,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-10-15 17:17:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:17:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-10-15 17:17:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:17:02,567 INFO L134 CoverageAnalysis]: Checked inductivity of 29404 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:17:02,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:17:02,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092538801] [2022-10-15 17:17:02,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092538801] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:17:02,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625060450] [2022-10-15 17:17:02,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-15 17:17:02,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:17:02,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:17:02,569 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) [2022-10-15 17:17:02,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 17:17:03,641 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2022-10-15 17:17:03,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:17:03,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:17:03,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:17:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 29404 backedges. 12970 proven. 469 refuted. 0 times theorem prover too weak. 15965 trivial. 0 not checked. [2022-10-15 17:17:03,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:17:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 29404 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:17:04,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625060450] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:17:04,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:17:04,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2022-10-15 17:17:04,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349626663] [2022-10-15 17:17:04,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:17:04,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-15 17:17:04,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:17:04,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-15 17:17:04,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:17:04,259 INFO L87 Difference]: Start difference. First operand 259 states and 262 transitions. Second operand has 33 states, 33 states have (on average 5.484848484848484) internal successors, (181), 33 states have internal predecessors, (181), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:17:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:17:04,451 INFO L93 Difference]: Finished difference Result 339 states and 342 transitions. [2022-10-15 17:17:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 17:17:04,451 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.484848484848484) internal successors, (181), 33 states have internal predecessors, (181), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 585 [2022-10-15 17:17:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:17:04,454 INFO L225 Difference]: With dead ends: 339 [2022-10-15 17:17:04,455 INFO L226 Difference]: Without dead ends: 339 [2022-10-15 17:17:04,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:17:04,456 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 120 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:17:04,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 251 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:17:04,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-10-15 17:17:04,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2022-10-15 17:17:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 333 states have (on average 1.009009009009009) internal successors, (336), 334 states have internal predecessors, (336), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:17:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 342 transitions. [2022-10-15 17:17:04,468 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 342 transitions. Word has length 585 [2022-10-15 17:17:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:17:04,469 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 342 transitions. [2022-10-15 17:17:04,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.484848484848484) internal successors, (181), 33 states have internal predecessors, (181), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:17:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 342 transitions. [2022-10-15 17:17:04,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2022-10-15 17:17:04,476 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:17:04,477 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 30, 30, 30, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:17:04,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 17:17:04,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:17:04,692 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:17:04,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:17:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1571863394, now seen corresponding path program 7 times [2022-10-15 17:17:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:17:04,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369774568] [2022-10-15 17:17:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:17:04,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:17:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:17:07,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:17:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:17:07,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-10-15 17:17:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:17:07,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-10-15 17:17:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:17:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 31140 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:17:07,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:17:07,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369774568] [2022-10-15 17:17:07,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369774568] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:17:07,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120817229] [2022-10-15 17:17:07,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-15 17:17:07,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:17:07,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:17:07,160 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) [2022-10-15 17:17:07,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 17:17:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:17:07,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-15 17:17:07,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:17:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 31140 backedges. 12970 proven. 2205 refuted. 0 times theorem prover too weak. 15965 trivial. 0 not checked. [2022-10-15 17:17:07,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:17:08,646 INFO L134 CoverageAnalysis]: Checked inductivity of 31140 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:17:08,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120817229] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:17:08,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:17:08,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 42 [2022-10-15 17:17:08,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970962509] [2022-10-15 17:17:08,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:17:08,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-15 17:17:08,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:17:08,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-15 17:17:08,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:17:08,652 INFO L87 Difference]: Start difference. First operand 339 states and 342 transitions. Second operand has 42 states, 42 states have (on average 5.5) internal successors, (231), 42 states have internal predecessors, (231), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:17:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:17:08,891 INFO L93 Difference]: Finished difference Result 384 states and 387 transitions. [2022-10-15 17:17:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-15 17:17:08,891 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.5) internal successors, (231), 42 states have internal predecessors, (231), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 665 [2022-10-15 17:17:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:17:08,895 INFO L225 Difference]: With dead ends: 384 [2022-10-15 17:17:08,895 INFO L226 Difference]: Without dead ends: 384 [2022-10-15 17:17:08,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1367 GetRequests, 1304 SyntacticMatches, 23 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:17:08,898 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 156 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:17:08,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 135 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:17:08,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-10-15 17:17:08,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2022-10-15 17:17:08,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 378 states have (on average 1.007936507936508) internal successors, (381), 379 states have internal predecessors, (381), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:17:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 387 transitions. [2022-10-15 17:17:08,911 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 387 transitions. Word has length 665 [2022-10-15 17:17:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:17:08,912 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 387 transitions. [2022-10-15 17:17:08,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.5) internal successors, (231), 42 states have internal predecessors, (231), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:17:08,912 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 387 transitions. [2022-10-15 17:17:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2022-10-15 17:17:08,920 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:17:08,921 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 39, 39, 39, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:17:08,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 17:17:09,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 17:17:09,135 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:17:09,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:17:09,136 INFO L85 PathProgramCache]: Analyzing trace with hash 325720411, now seen corresponding path program 8 times [2022-10-15 17:17:09,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:17:09,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227787963] [2022-10-15 17:17:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:17:09,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms