/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/termination-numeric/Ackermann01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 18:00:07,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 18:00:07,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 18:00:07,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 18:00:07,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 18:00:07,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 18:00:07,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 18:00:07,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 18:00:07,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 18:00:07,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 18:00:07,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 18:00:07,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 18:00:07,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 18:00:07,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 18:00:07,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 18:00:07,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 18:00:07,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 18:00:07,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 18:00:07,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 18:00:07,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 18:00:07,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 18:00:07,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 18:00:07,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 18:00:07,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 18:00:07,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 18:00:07,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 18:00:07,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 18:00:07,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 18:00:07,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 18:00:07,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 18:00:07,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 18:00:07,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 18:00:07,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 18:00:07,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 18:00:07,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 18:00:07,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 18:00:07,956 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 18:00:08,008 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 18:00:08,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 18:00:08,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 18:00:08,009 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 18:00:08,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 18:00:08,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 18:00:08,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 18:00:08,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 18:00:08,013 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 18:00:08,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 18:00:08,014 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 18:00:08,014 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 18:00:08,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 18:00:08,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 18:00:08,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 18:00:08,015 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 18:00:08,015 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 18:00:08,015 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 18:00:08,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 18:00:08,015 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 18:00:08,015 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 18:00:08,020 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 18:00:08,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 18:00:08,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 18:00:08,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 18:00:08,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:00:08,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 18:00:08,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 18:00:08,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 18:00:08,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 18:00:08,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 18:00:08,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 18:00:08,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 18:00:08,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 18:00:08,517 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 18:00:08,518 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 18:00:08,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Ackermann01-1.c [2022-10-15 18:00:08,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e96de42/2a30aa13e913403fa411341d1445837a/FLAG11f53c48b [2022-10-15 18:00:09,203 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 18:00:09,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/Ackermann01-1.c [2022-10-15 18:00:09,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e96de42/2a30aa13e913403fa411341d1445837a/FLAG11f53c48b [2022-10-15 18:00:09,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e96de42/2a30aa13e913403fa411341d1445837a [2022-10-15 18:00:09,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 18:00:09,580 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 18:00:09,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 18:00:09,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 18:00:09,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 18:00:09,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d0bdcb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09, skipping insertion in model container [2022-10-15 18:00:09,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 18:00:09,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 18:00:09,784 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/termination-numeric/Ackermann01-1.c[944,957] [2022-10-15 18:00:09,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:00:09,800 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 18:00:09,819 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/termination-numeric/Ackermann01-1.c[944,957] [2022-10-15 18:00:09,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:00:09,833 INFO L208 MainTranslator]: Completed translation [2022-10-15 18:00:09,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09 WrapperNode [2022-10-15 18:00:09,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 18:00:09,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 18:00:09,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 18:00:09,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 18:00:09,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,874 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2022-10-15 18:00:09,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 18:00:09,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 18:00:09,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 18:00:09,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 18:00:09,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 18:00:09,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 18:00:09,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 18:00:09,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 18:00:09,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09" (1/1) ... [2022-10-15 18:00:09,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:00:09,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:00:09,939 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 18:00:09,943 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 18:00:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 18:00:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 18:00:09,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 18:00:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2022-10-15 18:00:09,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2022-10-15 18:00:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 18:00:10,070 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 18:00:10,072 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 18:00:10,300 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 18:00:10,309 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 18:00:10,309 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 18:00:10,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:00:10 BoogieIcfgContainer [2022-10-15 18:00:10,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 18:00:10,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 18:00:10,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 18:00:10,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 18:00:10,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:00:09" (1/3) ... [2022-10-15 18:00:10,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53548885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:00:10, skipping insertion in model container [2022-10-15 18:00:10,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:09" (2/3) ... [2022-10-15 18:00:10,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53548885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:00:10, skipping insertion in model container [2022-10-15 18:00:10,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:00:10" (3/3) ... [2022-10-15 18:00:10,323 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann01-1.c [2022-10-15 18:00:10,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 18:00:10,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 18:00:10,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 18:00:10,495 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;@2a4a2dde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 18:00:10,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 18:00:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 18:00:10,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 18:00:10,528 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:10,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 18:00:10,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:00:10,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:10,549 INFO L85 PathProgramCache]: Analyzing trace with hash 925622, now seen corresponding path program 1 times [2022-10-15 18:00:10,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:10,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170217232] [2022-10-15 18:00:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:10,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:10,908 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 18:00:10,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:10,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170217232] [2022-10-15 18:00:10,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170217232] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:10,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:10,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:00:10,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250719420] [2022-10-15 18:00:10,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:10,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:00:10,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:10,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:00:10,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:10,966 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:11,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:11,010 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2022-10-15 18:00:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:00:11,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 18:00:11,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:11,023 INFO L225 Difference]: With dead ends: 23 [2022-10-15 18:00:11,023 INFO L226 Difference]: Without dead ends: 20 [2022-10-15 18:00:11,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:11,032 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:11,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:00:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-15 18:00:11,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-15 18:00:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 18:00:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-10-15 18:00:11,086 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 4 [2022-10-15 18:00:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:11,087 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-10-15 18:00:11,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:11,088 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-10-15 18:00:11,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 18:00:11,091 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:11,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:11,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 18:00:11,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:00:11,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:11,094 INFO L85 PathProgramCache]: Analyzing trace with hash -164366776, now seen corresponding path program 1 times [2022-10-15 18:00:11,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:11,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790778807] [2022-10-15 18:00:11,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:11,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:11,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 18:00:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:11,453 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 18:00:11,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:11,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790778807] [2022-10-15 18:00:11,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790778807] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:11,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:11,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 18:00:11,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756358140] [2022-10-15 18:00:11,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:11,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 18:00:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:11,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 18:00:11,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-15 18:00:11,460 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 18:00:11,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:11,606 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2022-10-15 18:00:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 18:00:11,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-10-15 18:00:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:11,610 INFO L225 Difference]: With dead ends: 24 [2022-10-15 18:00:11,611 INFO L226 Difference]: Without dead ends: 22 [2022-10-15 18:00:11,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-10-15 18:00:11,613 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:11,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 55 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:11,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-10-15 18:00:11,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-10-15 18:00:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-15 18:00:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-10-15 18:00:11,625 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 12 [2022-10-15 18:00:11,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:11,626 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-10-15 18:00:11,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 18:00:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-10-15 18:00:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-15 18:00:11,628 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:11,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:11,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 18:00:11,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:00:11,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:11,630 INFO L85 PathProgramCache]: Analyzing trace with hash 638572387, now seen corresponding path program 1 times [2022-10-15 18:00:11,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:11,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914848993] [2022-10-15 18:00:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:11,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:11,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 18:00:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:11,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:00:11,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:11,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914848993] [2022-10-15 18:00:11,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914848993] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:11,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:11,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-15 18:00:11,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030772941] [2022-10-15 18:00:11,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:11,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 18:00:11,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:11,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 18:00:11,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-15 18:00:11,890 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 18:00:12,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:12,048 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2022-10-15 18:00:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 18:00:12,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-10-15 18:00:12,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:12,051 INFO L225 Difference]: With dead ends: 27 [2022-10-15 18:00:12,051 INFO L226 Difference]: Without dead ends: 25 [2022-10-15 18:00:12,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-10-15 18:00:12,054 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:12,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 78 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-10-15 18:00:12,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-10-15 18:00:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-15 18:00:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-10-15 18:00:12,065 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 19 [2022-10-15 18:00:12,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:12,065 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-10-15 18:00:12,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 18:00:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-10-15 18:00:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-15 18:00:12,068 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:12,068 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:12,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 18:00:12,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:00:12,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:12,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1944997068, now seen corresponding path program 1 times [2022-10-15 18:00:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:12,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251644213] [2022-10-15 18:00:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:12,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 18:00:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 18:00:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:12,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 18:00:12,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:12,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251644213] [2022-10-15 18:00:12,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251644213] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:00:12,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044714849] [2022-10-15 18:00:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:12,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:00:12,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:00:12,266 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 18:00:12,292 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 18:00:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:12,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 18:00:12,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:00:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 18:00:12,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:00:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 18:00:12,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044714849] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:00:12,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:00:12,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2022-10-15 18:00:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754471041] [2022-10-15 18:00:12,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:00:12,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 18:00:12,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:12,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 18:00:12,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-10-15 18:00:12,724 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-15 18:00:12,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:12,885 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2022-10-15 18:00:12,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 18:00:12,886 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 25 [2022-10-15 18:00:12,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:12,889 INFO L225 Difference]: With dead ends: 30 [2022-10-15 18:00:12,889 INFO L226 Difference]: Without dead ends: 30 [2022-10-15 18:00:12,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-10-15 18:00:12,891 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 31 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:12,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 106 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-10-15 18:00:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2022-10-15 18:00:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-15 18:00:12,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-10-15 18:00:12,905 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 25 [2022-10-15 18:00:12,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:12,906 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-10-15 18:00:12,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-15 18:00:12,906 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-10-15 18:00:12,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 18:00:12,908 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:12,908 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:12,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 18:00:13,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:00:13,126 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:00:13,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:13,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1805545059, now seen corresponding path program 1 times [2022-10-15 18:00:13,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:13,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247823493] [2022-10-15 18:00:13,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:13,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:13,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 18:00:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:13,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:13,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 18:00:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 18:00:13,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:13,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247823493] [2022-10-15 18:00:13,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247823493] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:00:13,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313004776] [2022-10-15 18:00:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:13,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:00:13,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:00:13,655 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 18:00:13,682 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 18:00:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:13,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-15 18:00:13,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:00:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-15 18:00:13,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:00:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 18:00:14,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313004776] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:00:14,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:00:14,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 25 [2022-10-15 18:00:14,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18607816] [2022-10-15 18:00:14,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:00:14,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-15 18:00:14,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-15 18:00:14,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2022-10-15 18:00:14,451 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 19 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-15 18:00:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:15,003 INFO L93 Difference]: Finished difference Result 55 states and 94 transitions. [2022-10-15 18:00:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-15 18:00:15,004 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 19 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) Word has length 32 [2022-10-15 18:00:15,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:15,008 INFO L225 Difference]: With dead ends: 55 [2022-10-15 18:00:15,008 INFO L226 Difference]: Without dead ends: 51 [2022-10-15 18:00:15,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=1443, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 18:00:15,011 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 48 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:15,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 147 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 18:00:15,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-10-15 18:00:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2022-10-15 18:00:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (31), 10 states have call predecessors, (31), 6 states have call successors, (31) [2022-10-15 18:00:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2022-10-15 18:00:15,029 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 32 [2022-10-15 18:00:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:15,030 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2022-10-15 18:00:15,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 19 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-15 18:00:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2022-10-15 18:00:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 18:00:15,033 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:15,033 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:15,077 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 18:00:15,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:00:15,247 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:00:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:15,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1073965217, now seen corresponding path program 2 times [2022-10-15 18:00:15,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:15,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971408005] [2022-10-15 18:00:15,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:15,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:15,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 18:00:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:15,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:15,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:15,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:15,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 18:00:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:15,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 31 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 18:00:15,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:15,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971408005] [2022-10-15 18:00:15,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971408005] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:00:15,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438493630] [2022-10-15 18:00:15,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:00:15,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:00:15,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:00:15,579 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 18:00:15,583 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 18:00:15,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 18:00:15,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:00:15,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 18:00:15,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:00:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 31 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 18:00:15,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:00:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 18:00:16,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438493630] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:00:16,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:00:16,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2022-10-15 18:00:16,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811369126] [2022-10-15 18:00:16,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:00:16,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-15 18:00:16,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:16,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-15 18:00:16,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-10-15 18:00:16,150 INFO L87 Difference]: Start difference. First operand 38 states and 64 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 6 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) [2022-10-15 18:00:16,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:16,531 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2022-10-15 18:00:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 18:00:16,532 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 6 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) Word has length 46 [2022-10-15 18:00:16,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:16,534 INFO L225 Difference]: With dead ends: 63 [2022-10-15 18:00:16,534 INFO L226 Difference]: Without dead ends: 63 [2022-10-15 18:00:16,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2022-10-15 18:00:16,536 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 71 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:16,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 132 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:00:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-10-15 18:00:16,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2022-10-15 18:00:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 9 states have call successors, (9), 2 states have call predecessors, (9), 11 states have return successors, (57), 17 states have call predecessors, (57), 9 states have call successors, (57) [2022-10-15 18:00:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 107 transitions. [2022-10-15 18:00:16,554 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 107 transitions. Word has length 46 [2022-10-15 18:00:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:16,555 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 107 transitions. [2022-10-15 18:00:16,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 6 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) [2022-10-15 18:00:16,556 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 107 transitions. [2022-10-15 18:00:16,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-15 18:00:16,559 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:16,559 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:16,591 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 18:00:16,773 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 18:00:16,774 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:00:16,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:16,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1160166668, now seen corresponding path program 3 times [2022-10-15 18:00:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:16,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114817766] [2022-10-15 18:00:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:16,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 18:00:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:17,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:17,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:17,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:17,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:17,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 18:00:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:17,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 18:00:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 76 proven. 29 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-10-15 18:00:17,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:17,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114817766] [2022-10-15 18:00:17,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114817766] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:00:17,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575578995] [2022-10-15 18:00:17,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 18:00:17,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:00:17,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:00:17,572 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 18:00:17,597 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 18:00:17,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-15 18:00:17,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:00:17,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 18:00:17,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:00:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-10-15 18:00:17,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:00:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-10-15 18:00:18,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575578995] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-15 18:00:18,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-15 18:00:18,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16, 9] total 27 [2022-10-15 18:00:18,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089369368] [2022-10-15 18:00:18,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:18,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 18:00:18,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:18,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 18:00:18,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-10-15 18:00:18,361 INFO L87 Difference]: Start difference. First operand 60 states and 107 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-15 18:00:18,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:18,530 INFO L93 Difference]: Finished difference Result 74 states and 137 transitions. [2022-10-15 18:00:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 18:00:18,530 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2022-10-15 18:00:18,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:18,533 INFO L225 Difference]: With dead ends: 74 [2022-10-15 18:00:18,533 INFO L226 Difference]: Without dead ends: 72 [2022-10-15 18:00:18,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2022-10-15 18:00:18,535 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:18,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 85 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:18,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-10-15 18:00:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-10-15 18:00:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 9 states have call successors, (9), 2 states have call predecessors, (9), 15 states have return successors, (75), 21 states have call predecessors, (75), 9 states have call successors, (75) [2022-10-15 18:00:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 133 transitions. [2022-10-15 18:00:18,554 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 133 transitions. Word has length 66 [2022-10-15 18:00:18,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:18,555 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 133 transitions. [2022-10-15 18:00:18,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-15 18:00:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 133 transitions. [2022-10-15 18:00:18,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-15 18:00:18,558 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:18,559 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:18,597 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 18:00:18,772 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 18:00:18,772 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:00:18,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:18,774 INFO L85 PathProgramCache]: Analyzing trace with hash 394011071, now seen corresponding path program 4 times [2022-10-15 18:00:18,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:18,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89703949] [2022-10-15 18:00:18,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:18,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 18:00:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 18:00:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 18:00:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 18:00:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 100 proven. 93 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-10-15 18:00:19,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:19,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89703949] [2022-10-15 18:00:19,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89703949] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:00:19,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29940031] [2022-10-15 18:00:19,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 18:00:19,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:00:19,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:00:19,616 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 18:00:19,623 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 18:00:19,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 18:00:19,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:00:19,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-15 18:00:19,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:00:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 111 proven. 112 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-10-15 18:00:19,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:00:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 111 proven. 128 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-10-15 18:00:21,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29940031] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:00:21,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:00:21,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 21 [2022-10-15 18:00:21,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708169513] [2022-10-15 18:00:21,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:00:21,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-15 18:00:21,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:21,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-15 18:00:21,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-10-15 18:00:21,283 INFO L87 Difference]: Start difference. First operand 72 states and 133 transitions. Second operand has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 12 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (26), 7 states have call predecessors, (26), 12 states have call successors, (26) [2022-10-15 18:00:21,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:21,535 INFO L93 Difference]: Finished difference Result 89 states and 181 transitions. [2022-10-15 18:00:21,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 18:00:21,536 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 12 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (26), 7 states have call predecessors, (26), 12 states have call successors, (26) Word has length 86 [2022-10-15 18:00:21,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:21,542 INFO L225 Difference]: With dead ends: 89 [2022-10-15 18:00:21,542 INFO L226 Difference]: Without dead ends: 89 [2022-10-15 18:00:21,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 182 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2022-10-15 18:00:21,544 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 96 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:21,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 151 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:00:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-10-15 18:00:21,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2022-10-15 18:00:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 50 states have internal predecessors, (53), 10 states have call successors, (10), 5 states have call predecessors, (10), 13 states have return successors, (60), 16 states have call predecessors, (60), 10 states have call successors, (60) [2022-10-15 18:00:21,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 123 transitions. [2022-10-15 18:00:21,597 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 123 transitions. Word has length 86 [2022-10-15 18:00:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:21,597 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 123 transitions. [2022-10-15 18:00:21,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 12 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (26), 7 states have call predecessors, (26), 12 states have call successors, (26) [2022-10-15 18:00:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 123 transitions. [2022-10-15 18:00:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-10-15 18:00:21,601 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:21,603 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:21,628 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 18:00:21,803 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 18:00:21,804 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:00:21,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:21,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1353294381, now seen corresponding path program 5 times [2022-10-15 18:00:21,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:21,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002175543] [2022-10-15 18:00:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:21,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 18:00:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 18:00:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 18:00:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-15 18:00:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 18:00:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 18:00:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 104 proven. 224 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-10-15 18:00:22,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:22,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002175543] [2022-10-15 18:00:22,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002175543] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:00:22,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002753502] [2022-10-15 18:00:22,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 18:00:22,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:00:22,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:00:22,924 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 18:00:22,946 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 18:00:23,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-10-15 18:00:23,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:00:23,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 18:00:23,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:00:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 337 proven. 37 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-10-15 18:00:23,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:00:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 148 proven. 142 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2022-10-15 18:00:25,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002753502] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:00:25,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:00:25,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 15] total 32 [2022-10-15 18:00:25,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995918063] [2022-10-15 18:00:25,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:00:25,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-15 18:00:25,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:25,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-15 18:00:25,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2022-10-15 18:00:25,238 INFO L87 Difference]: Start difference. First operand 72 states and 123 transitions. Second operand has 32 states, 32 states have (on average 2.4375) internal successors, (78), 26 states have internal predecessors, (78), 12 states have call successors, (19), 2 states have call predecessors, (19), 15 states have return successors, (34), 17 states have call predecessors, (34), 12 states have call successors, (34) [2022-10-15 18:00:26,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:26,455 INFO L93 Difference]: Finished difference Result 80 states and 146 transitions. [2022-10-15 18:00:26,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-10-15 18:00:26,457 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 26 states have internal predecessors, (78), 12 states have call successors, (19), 2 states have call predecessors, (19), 15 states have return successors, (34), 17 states have call predecessors, (34), 12 states have call successors, (34) Word has length 113 [2022-10-15 18:00:26,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:26,457 INFO L225 Difference]: With dead ends: 80 [2022-10-15 18:00:26,458 INFO L226 Difference]: Without dead ends: 0 [2022-10-15 18:00:26,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 236 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=736, Invalid=3170, Unknown=0, NotChecked=0, Total=3906 [2022-10-15 18:00:26,461 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 48 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:26,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 131 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 18:00:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-15 18:00:26,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-15 18:00:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-15 18:00:26,463 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2022-10-15 18:00:26,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:26,463 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-15 18:00:26,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 26 states have internal predecessors, (78), 12 states have call successors, (19), 2 states have call predecessors, (19), 15 states have return successors, (34), 17 states have call predecessors, (34), 12 states have call successors, (34) [2022-10-15 18:00:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-15 18:00:26,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-15 18:00:26,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-10-15 18:00:26,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-10-15 18:00:26,510 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 18:00:26,681 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 18:00:26,687 INFO L444 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1] [2022-10-15 18:00:26,689 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 18:00:26,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:00:26 BoogieIcfgContainer [2022-10-15 18:00:26,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 18:00:26,693 INFO L158 Benchmark]: Toolchain (without parser) took 17117.66ms. Allocated memory was 153.1MB in the beginning and 305.1MB in the end (delta: 152.0MB). Free memory was 127.6MB in the beginning and 122.2MB in the end (delta: 5.4MB). Peak memory consumption was 159.0MB. Max. memory is 8.0GB. [2022-10-15 18:00:26,693 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 153.1MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 18:00:26,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.11ms. Allocated memory is still 153.1MB. Free memory was 127.4MB in the beginning and 117.9MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-15 18:00:26,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.89ms. Allocated memory is still 153.1MB. Free memory was 117.9MB in the beginning and 116.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 18:00:26,694 INFO L158 Benchmark]: Boogie Preprocessor took 22.52ms. Allocated memory is still 153.1MB. Free memory was 116.5MB in the beginning and 115.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 18:00:26,695 INFO L158 Benchmark]: RCFGBuilder took 413.49ms. Allocated memory is still 153.1MB. Free memory was 115.5MB in the beginning and 104.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-15 18:00:26,695 INFO L158 Benchmark]: TraceAbstraction took 16378.19ms. Allocated memory was 153.1MB in the beginning and 305.1MB in the end (delta: 152.0MB). Free memory was 103.9MB in the beginning and 122.2MB in the end (delta: -18.3MB). Peak memory consumption was 134.9MB. Max. memory is 8.0GB. [2022-10-15 18:00:26,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 153.1MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 252.11ms. Allocated memory is still 153.1MB. Free memory was 127.4MB in the beginning and 117.9MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.89ms. Allocated memory is still 153.1MB. Free memory was 117.9MB in the beginning and 116.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.52ms. Allocated memory is still 153.1MB. Free memory was 116.5MB in the beginning and 115.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 413.49ms. Allocated memory is still 153.1MB. Free memory was 115.5MB in the beginning and 104.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 16378.19ms. Allocated memory was 153.1MB in the beginning and 305.1MB in the end (delta: 152.0MB). Free memory was 103.9MB in the beginning and 122.2MB in the end (delta: -18.3MB). Peak memory consumption was 134.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 40]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 27]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 16.3s, OverallIterations: 9, TraceHistogramMax: 16, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 363 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 333 mSDsluCounter, 928 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 744 mSDsCounter, 515 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1934 IncrementalHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 515 mSolverCounterUnsat, 184 mSDtfsCounter, 1934 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1001 GetRequests, 771 SyntacticMatches, 14 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1493 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=7, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 771 NumberOfCodeBlocks, 673 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1118 ConstructedInterpolants, 0 QuantifiedInterpolants, 2394 SizeOfPredicates, 20 NumberOfNonLiveVariables, 886 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 21 InterpolantComputations, 4 PerfectInterpolantSequences, 2801/3631 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-15 18:00:26,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...