/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/loop-acceleration/phases_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 18:17:17,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 18:17:17,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 18:17:17,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 18:17:17,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 18:17:17,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 18:17:17,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 18:17:17,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 18:17:17,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 18:17:17,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 18:17:17,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 18:17:17,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 18:17:17,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 18:17:17,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 18:17:17,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 18:17:17,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 18:17:17,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 18:17:17,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 18:17:17,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 18:17:17,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 18:17:17,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 18:17:17,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 18:17:17,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 18:17:17,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 18:17:17,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 18:17:17,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 18:17:17,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 18:17:17,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 18:17:18,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 18:17:18,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 18:17:18,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 18:17:18,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 18:17:18,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 18:17:18,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 18:17:18,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 18:17:18,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 18:17:18,005 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 18:17:18,055 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 18:17:18,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 18:17:18,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 18:17:18,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 18:17:18,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 18:17:18,058 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 18:17:18,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 18:17:18,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 18:17:18,061 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 18:17:18,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 18:17:18,062 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 18:17:18,062 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 18:17:18,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 18:17:18,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 18:17:18,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 18:17:18,063 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 18:17:18,063 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 18:17:18,063 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 18:17:18,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 18:17:18,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 18:17:18,064 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 18:17:18,064 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 18:17:18,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 18:17:18,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 18:17:18,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 18:17:18,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:17:18,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 18:17:18,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 18:17:18,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 18:17:18,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 18:17:18,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 18:17:18,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 18:17:18,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 18:17:18,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 18:17:18,514 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 18:17:18,515 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 18:17:18,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/phases_1-2.c [2022-10-15 18:17:18,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0d275a81/36e652ba390d4c7690fd95f4c5ec27ca/FLAGd6dbcc64a [2022-10-15 18:17:19,196 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 18:17:19,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/phases_1-2.c [2022-10-15 18:17:19,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0d275a81/36e652ba390d4c7690fd95f4c5ec27ca/FLAGd6dbcc64a [2022-10-15 18:17:19,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0d275a81/36e652ba390d4c7690fd95f4c5ec27ca [2022-10-15 18:17:19,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 18:17:19,571 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 18:17:19,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 18:17:19,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 18:17:19,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 18:17:19,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139cbc43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19, skipping insertion in model container [2022-10-15 18:17:19,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 18:17:19,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 18:17:19,753 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/loop-acceleration/phases_1-2.c[322,335] [2022-10-15 18:17:19,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:17:19,778 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 18:17:19,792 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/loop-acceleration/phases_1-2.c[322,335] [2022-10-15 18:17:19,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:17:19,810 INFO L208 MainTranslator]: Completed translation [2022-10-15 18:17:19,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19 WrapperNode [2022-10-15 18:17:19,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 18:17:19,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 18:17:19,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 18:17:19,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 18:17:19,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,851 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-10-15 18:17:19,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 18:17:19,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 18:17:19,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 18:17:19,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 18:17:19,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,874 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 18:17:19,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 18:17:19,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 18:17:19,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 18:17:19,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19" (1/1) ... [2022-10-15 18:17:19,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:17:19,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:17:19,911 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 18:17:19,916 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 18:17:19,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 18:17:19,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 18:17:19,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 18:17:19,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 18:17:20,042 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 18:17:20,045 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 18:17:20,285 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 18:17:20,305 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 18:17:20,305 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 18:17:20,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:17:20 BoogieIcfgContainer [2022-10-15 18:17:20,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 18:17:20,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 18:17:20,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 18:17:20,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 18:17:20,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:17:19" (1/3) ... [2022-10-15 18:17:20,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198a6c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:17:20, skipping insertion in model container [2022-10-15 18:17:20,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:19" (2/3) ... [2022-10-15 18:17:20,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198a6c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:17:20, skipping insertion in model container [2022-10-15 18:17:20,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:17:20" (3/3) ... [2022-10-15 18:17:20,325 INFO L112 eAbstractionObserver]: Analyzing ICFG phases_1-2.c [2022-10-15 18:17:20,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 18:17:20,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 18:17:20,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 18:17:20,423 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;@6d7f25e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 18:17:20,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 18:17:20,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.6) internal successors, (16), 12 states have internal predecessors, (16), 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 18:17:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 18:17:20,438 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:20,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 18:17:20,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:20,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:20,448 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2022-10-15 18:17:20,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:20,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495682370] [2022-10-15 18:17:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:20,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:20,683 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 18:17:20,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:20,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495682370] [2022-10-15 18:17:20,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495682370] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:17:20,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:17:20,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:17:20,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589501465] [2022-10-15 18:17:20,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:17:20,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 18:17:20,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:17:20,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 18:17:20,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 18:17:20,732 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.6) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 18:17:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:17:20,745 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-10-15 18:17:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 18:17:20,748 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-10-15 18:17:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:17:20,758 INFO L225 Difference]: With dead ends: 13 [2022-10-15 18:17:20,759 INFO L226 Difference]: Without dead ends: 11 [2022-10-15 18:17:20,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 18:17:20,767 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:17:20,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:17:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-10-15 18:17:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-10-15 18:17:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-10-15 18:17:20,806 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2022-10-15 18:17:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:17:20,807 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-10-15 18:17:20,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 18:17:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-10-15 18:17:20,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 18:17:20,808 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:20,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 18:17:20,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 18:17:20,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:20,810 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2022-10-15 18:17:20,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:20,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74600781] [2022-10-15 18:17:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:20,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:21,108 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 18:17:21,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:21,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74600781] [2022-10-15 18:17:21,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74600781] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:17:21,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:17:21,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 18:17:21,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872871305] [2022-10-15 18:17:21,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:17:21,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:17:21,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:17:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:17:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:17:21,119 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 18:17:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:17:21,163 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-10-15 18:17:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:17:21,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-10-15 18:17:21,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:17:21,173 INFO L225 Difference]: With dead ends: 13 [2022-10-15 18:17:21,173 INFO L226 Difference]: Without dead ends: 13 [2022-10-15 18:17:21,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:17:21,176 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:17:21,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:17:21,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-10-15 18:17:21,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-10-15 18:17:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 18:17:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-10-15 18:17:21,193 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2022-10-15 18:17:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:17:21,193 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-10-15 18:17:21,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 18:17:21,196 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-10-15 18:17:21,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 18:17:21,197 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:21,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:17:21,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 18:17:21,198 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:21,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:21,202 INFO L85 PathProgramCache]: Analyzing trace with hash 295691924, now seen corresponding path program 1 times [2022-10-15 18:17:21,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:21,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694729353] [2022-10-15 18:17:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:21,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:21,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694729353] [2022-10-15 18:17:21,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694729353] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:17:21,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890566136] [2022-10-15 18:17:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:21,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:17:21,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:17:21,408 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 18:17:21,414 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 18:17:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:21,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 18:17:21,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:17:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:21,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:17:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:21,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890566136] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:17:21,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:17:21,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-15 18:17:21,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635322695] [2022-10-15 18:17:21,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:17:21,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 18:17:21,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:17:21,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 18:17:21,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-10-15 18:17:21,555 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 18:17:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:17:21,670 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-10-15 18:17:21,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 18:17:21,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 8 [2022-10-15 18:17:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:17:21,678 INFO L225 Difference]: With dead ends: 17 [2022-10-15 18:17:21,679 INFO L226 Difference]: Without dead ends: 17 [2022-10-15 18:17:21,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-10-15 18:17:21,685 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:17:21,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 21 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:17:21,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-10-15 18:17:21,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-10-15 18:17:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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 18:17:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-10-15 18:17:21,699 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2022-10-15 18:17:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:17:21,700 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-10-15 18:17:21,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 18:17:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-10-15 18:17:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 18:17:21,701 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:21,702 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:17:21,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 18:17:21,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:17:21,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:21,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:21,920 INFO L85 PathProgramCache]: Analyzing trace with hash 572634524, now seen corresponding path program 1 times [2022-10-15 18:17:21,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:21,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958132050] [2022-10-15 18:17:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:21,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:22,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:22,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958132050] [2022-10-15 18:17:22,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958132050] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:17:22,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984962124] [2022-10-15 18:17:22,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:22,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:17:22,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:17:22,123 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 18:17:22,146 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 18:17:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:22,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 18:17:22,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:17:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:22,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:17:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 18:17:22,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984962124] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:17:22,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:17:22,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 10 [2022-10-15 18:17:22,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061792489] [2022-10-15 18:17:22,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:17:22,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 18:17:22,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:17:22,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 18:17:22,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-15 18:17:22,389 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 18:17:22,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:17:22,485 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-10-15 18:17:22,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 18:17:22,486 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 18:17:22,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:17:22,488 INFO L225 Difference]: With dead ends: 26 [2022-10-15 18:17:22,488 INFO L226 Difference]: Without dead ends: 26 [2022-10-15 18:17:22,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-10-15 18:17:22,490 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:17:22,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 35 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:17:22,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-15 18:17:22,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-10-15 18:17:22,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 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 18:17:22,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-10-15 18:17:22,497 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 12 [2022-10-15 18:17:22,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:17:22,498 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-10-15 18:17:22,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 18:17:22,499 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-10-15 18:17:22,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 18:17:22,500 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:22,500 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:17:22,540 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 18:17:22,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 18:17:22,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:22,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:22,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1176853889, now seen corresponding path program 2 times [2022-10-15 18:17:22,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:22,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54785791] [2022-10-15 18:17:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:22,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:22,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54785791] [2022-10-15 18:17:22,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54785791] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:17:22,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98067164] [2022-10-15 18:17:22,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:17:22,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:17:22,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:17:22,867 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 18:17:22,877 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 18:17:22,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 18:17:22,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:17:22,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 18:17:22,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:17:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:22,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:17:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:23,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98067164] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:17:23,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:17:23,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2022-10-15 18:17:23,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405924854] [2022-10-15 18:17:23,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:17:23,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 18:17:23,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:17:23,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 18:17:23,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-10-15 18:17:23,179 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 18:17:23,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:17:23,575 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-10-15 18:17:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 18:17:23,576 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 14 [2022-10-15 18:17:23,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:17:23,577 INFO L225 Difference]: With dead ends: 33 [2022-10-15 18:17:23,577 INFO L226 Difference]: Without dead ends: 33 [2022-10-15 18:17:23,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2022-10-15 18:17:23,579 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 32 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:17:23,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 33 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:17:23,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-10-15 18:17:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-10-15 18:17:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 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 18:17:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-10-15 18:17:23,586 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 14 [2022-10-15 18:17:23,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:17:23,587 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-10-15 18:17:23,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 18:17:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-10-15 18:17:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-15 18:17:23,588 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:23,588 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:17:23,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-15 18:17:23,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:17:23,804 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:23,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:23,806 INFO L85 PathProgramCache]: Analyzing trace with hash 822650291, now seen corresponding path program 1 times [2022-10-15 18:17:23,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:23,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216439028] [2022-10-15 18:17:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:23,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-10-15 18:17:23,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:23,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216439028] [2022-10-15 18:17:23,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216439028] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:17:23,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:17:23,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:17:23,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191391982] [2022-10-15 18:17:23,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:17:23,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:17:23,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:17:23,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:17:23,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:17:23,872 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:23,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:17:23,876 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-10-15 18:17:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:17:23,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-10-15 18:17:23,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:17:23,878 INFO L225 Difference]: With dead ends: 32 [2022-10-15 18:17:23,878 INFO L226 Difference]: Without dead ends: 28 [2022-10-15 18:17:23,879 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 18:17:23,880 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:17:23,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:17:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-15 18:17:23,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-10-15 18:17:23,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 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 18:17:23,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-10-15 18:17:23,886 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 25 [2022-10-15 18:17:23,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:17:23,887 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-10-15 18:17:23,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:23,887 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-10-15 18:17:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-15 18:17:23,888 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:23,888 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:17:23,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 18:17:23,889 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:23,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:23,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1990618095, now seen corresponding path program 3 times [2022-10-15 18:17:23,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:23,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632338145] [2022-10-15 18:17:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:24,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:24,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632338145] [2022-10-15 18:17:24,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632338145] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:17:24,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821888737] [2022-10-15 18:17:24,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 18:17:24,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:17:24,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:17:24,381 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 18:17:24,384 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 18:17:24,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-15 18:17:24,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:17:24,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 18:17:24,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:17:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-15 18:17:24,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:17:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-15 18:17:25,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821888737] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:17:25,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:17:25,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 7] total 19 [2022-10-15 18:17:25,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122985670] [2022-10-15 18:17:25,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:17:25,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-15 18:17:25,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:17:25,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-15 18:17:25,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-10-15 18:17:25,093 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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 18:17:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:17:25,618 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2022-10-15 18:17:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-15 18:17:25,618 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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 26 [2022-10-15 18:17:25,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:17:25,621 INFO L225 Difference]: With dead ends: 46 [2022-10-15 18:17:25,621 INFO L226 Difference]: Without dead ends: 44 [2022-10-15 18:17:25,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2022-10-15 18:17:25,623 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 42 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 18:17:25,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 32 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 18:17:25,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-15 18:17:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2022-10-15 18:17:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 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 18:17:25,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-10-15 18:17:25,631 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 26 [2022-10-15 18:17:25,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:17:25,632 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-10-15 18:17:25,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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 18:17:25,632 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-10-15 18:17:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-15 18:17:25,633 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:25,633 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 4, 1, 1, 1, 1, 1, 1] [2022-10-15 18:17:25,642 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 18:17:25,838 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 18:17:25,839 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:25,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2051424454, now seen corresponding path program 4 times [2022-10-15 18:17:25,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:25,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773829483] [2022-10-15 18:17:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:25,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 84 proven. 132 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 18:17:26,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:26,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773829483] [2022-10-15 18:17:26,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773829483] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:17:26,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822166051] [2022-10-15 18:17:26,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 18:17:26,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:17:26,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:17:26,280 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 18:17:26,304 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 18:17:26,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 18:17:26,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:17:26,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 30 conjunts are in the unsatisfiable core [2022-10-15 18:17:26,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:17:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 42 proven. 182 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:17:26,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:17:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 42 proven. 182 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:17:27,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822166051] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:17:27,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:17:27,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 17] total 32 [2022-10-15 18:17:27,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976075360] [2022-10-15 18:17:27,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:17:27,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-15 18:17:27,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:17:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-15 18:17:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=693, Unknown=0, NotChecked=0, Total=992 [2022-10-15 18:17:27,482 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 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 18:17:49,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:17:49,089 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-10-15 18:17:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-15 18:17:49,090 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-10-15 18:17:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:17:49,092 INFO L225 Difference]: With dead ends: 73 [2022-10-15 18:17:49,092 INFO L226 Difference]: Without dead ends: 73 [2022-10-15 18:17:49,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=747, Invalid=1323, Unknown=0, NotChecked=0, Total=2070 [2022-10-15 18:17:49,094 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 68 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 18:17:49,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 44 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 18:17:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-10-15 18:17:49,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-10-15 18:17:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 72 states have internal predecessors, (78), 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 18:17:49,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-10-15 18:17:49,104 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 36 [2022-10-15 18:17:49,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:17:49,104 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-10-15 18:17:49,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 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 18:17:49,105 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-10-15 18:17:49,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-15 18:17:49,107 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:49,107 INFO L195 NwaCegarLoop]: trace histogram [31, 27, 4, 1, 1, 1, 1, 1, 1] [2022-10-15 18:17:49,139 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 18:17:49,322 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 18:17:49,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:49,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:49,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1213758218, now seen corresponding path program 5 times [2022-10-15 18:17:49,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:49,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250032105] [2022-10-15 18:17:49,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:49,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 196 proven. 756 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 18:17:50,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:50,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250032105] [2022-10-15 18:17:50,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250032105] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:17:50,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857907071] [2022-10-15 18:17:50,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 18:17:50,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:17:50,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:17:50,745 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 18:17:50,772 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 18:17:57,842 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-10-15 18:17:57,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:17:57,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 60 conjunts are in the unsatisfiable core [2022-10-15 18:17:57,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:17:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 145 proven. 812 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 18:17:58,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:18:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 145 proven. 812 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 18:18:01,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857907071] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:18:01,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:18:01,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 32] total 62 [2022-10-15 18:18:01,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190580023] [2022-10-15 18:18:01,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:18:01,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-10-15 18:18:01,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:01,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-10-15 18:18:01,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1050, Invalid=2732, Unknown=0, NotChecked=0, Total=3782 [2022-10-15 18:18:01,609 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 62 states have internal predecessors, (128), 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)