/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/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:18:12,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:18:12,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:18:12,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:18:12,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:18:12,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:18:12,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:18:12,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:18:12,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:18:12,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:18:12,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:18:12,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:18:12,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:18:12,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:18:12,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:18:12,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:18:12,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:18:12,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:18:12,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:18:12,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:18:12,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:18:12,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:18:12,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:18:12,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:18:12,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 16:18:12,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 16:18:12,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 16:18:12,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 16:18:12,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 16:18:12,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 16:18:12,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:18:12,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:18:12,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:18:12,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:18:12,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:18:12,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:18:12,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:18:12,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:18:12,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:18:12,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:18:12,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:18:12,364 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 16:18:12,428 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:18:12,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:18:12,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:18:12,431 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:18:12,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:18:12,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:18:12,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:18:12,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:18:12,436 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:18:12,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:18:12,438 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:18:12,439 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:18:12,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:18:12,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:18:12,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:18:12,439 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:18:12,440 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:18:12,440 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:18:12,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:18:12,440 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:18:12,441 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:18:12,441 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:18:12,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:18:12,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:18:12,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:18:12,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:18:12,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:18:12,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:18:12,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:18:12,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:18:12,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:18:12,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:18:12,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:18:12,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:18:12,904 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:18:12,905 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:18:12,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs2f.c [2022-10-15 16:18:12,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334bb67f6/c8e224685940408ea5988d667226afb8/FLAG73bd68efa [2022-10-15 16:18:13,693 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:18:13,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2f.c [2022-10-15 16:18:13,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334bb67f6/c8e224685940408ea5988d667226afb8/FLAG73bd68efa [2022-10-15 16:18:14,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334bb67f6/c8e224685940408ea5988d667226afb8 [2022-10-15 16:18:14,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:18:14,042 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:18:14,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:18:14,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:18:14,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:18:14,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b19065e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14, skipping insertion in model container [2022-10-15 16:18:14,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:18:14,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:18:14,253 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/array-fpi/brs2f.c[588,601] [2022-10-15 16:18:14,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:18:14,289 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:18:14,304 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/array-fpi/brs2f.c[588,601] [2022-10-15 16:18:14,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:18:14,331 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:18:14,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14 WrapperNode [2022-10-15 16:18:14,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:18:14,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:18:14,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:18:14,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:18:14,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,379 INFO L138 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-10-15 16:18:14,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:18:14,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:18:14,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:18:14,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:18:14,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,410 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:18:14,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:18:14,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:18:14,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:18:14,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14" (1/1) ... [2022-10-15 16:18:14,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:18:14,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:14,455 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 16:18:14,472 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 16:18:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:18:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:18:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 16:18:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:18:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 16:18:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:18:14,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:18:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:18:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 16:18:14,601 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:18:14,604 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:18:14,924 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:18:14,933 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:18:14,934 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 16:18:14,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:18:14 BoogieIcfgContainer [2022-10-15 16:18:14,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:18:14,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:18:14,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:18:14,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:18:14,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:18:14" (1/3) ... [2022-10-15 16:18:14,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8046ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:18:14, skipping insertion in model container [2022-10-15 16:18:14,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:14" (2/3) ... [2022-10-15 16:18:14,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8046ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:18:14, skipping insertion in model container [2022-10-15 16:18:14,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:18:14" (3/3) ... [2022-10-15 16:18:14,983 INFO L112 eAbstractionObserver]: Analyzing ICFG brs2f.c [2022-10-15 16:18:15,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:18:15,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-10-15 16:18:15,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:18:15,152 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;@22601d1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:18:15,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-10-15 16:18:15,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 42 states have internal predecessors, (51), 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 16:18:15,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:18:15,181 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:15,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:18:15,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:15,194 INFO L85 PathProgramCache]: Analyzing trace with hash 925684, now seen corresponding path program 1 times [2022-10-15 16:18:15,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:15,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532254171] [2022-10-15 16:18:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:15,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:15,519 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 16:18:15,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:15,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532254171] [2022-10-15 16:18:15,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532254171] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:15,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:15,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:18:15,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216029840] [2022-10-15 16:18:15,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:15,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:18:15,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:15,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:18:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:18:15,588 INFO L87 Difference]: Start difference. First operand has 43 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 42 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:15,694 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-10-15 16:18:15,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:18:15,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 16:18:15,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:15,709 INFO L225 Difference]: With dead ends: 44 [2022-10-15 16:18:15,709 INFO L226 Difference]: Without dead ends: 41 [2022-10-15 16:18:15,711 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 16:18:15,716 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:15,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 68 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:18:15,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-15 16:18:15,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-10-15 16:18:15,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.76) internal successors, (44), 40 states have internal predecessors, (44), 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 16:18:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-10-15 16:18:15,756 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 4 [2022-10-15 16:18:15,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:15,756 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-10-15 16:18:15,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:15,757 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-10-15 16:18:15,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 16:18:15,758 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:15,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:15,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:18:15,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash 179478226, now seen corresponding path program 1 times [2022-10-15 16:18:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:15,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540092859] [2022-10-15 16:18:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:15,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:15,999 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 16:18:16,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:16,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540092859] [2022-10-15 16:18:16,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540092859] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:16,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:16,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:18:16,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669972696] [2022-10-15 16:18:16,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:16,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:18:16,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:16,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:18:16,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:18:16,005 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:18:16,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:16,047 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-10-15 16:18:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:18:16,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:18:16,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:16,049 INFO L225 Difference]: With dead ends: 38 [2022-10-15 16:18:16,049 INFO L226 Difference]: Without dead ends: 38 [2022-10-15 16:18:16,050 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 16:18:16,052 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 32 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:16,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:16,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-15 16:18:16,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-10-15 16:18:16,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.64) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-10-15 16:18:16,060 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 8 [2022-10-15 16:18:16,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:16,061 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-10-15 16:18:16,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:18:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-10-15 16:18:16,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 16:18:16,063 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:16,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:16,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:18:16,064 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:16,065 INFO L85 PathProgramCache]: Analyzing trace with hash 179478227, now seen corresponding path program 1 times [2022-10-15 16:18:16,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:16,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000051900] [2022-10-15 16:18:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:16,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:16,333 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 16:18:16,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:16,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000051900] [2022-10-15 16:18:16,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000051900] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:16,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:16,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:18:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751163079] [2022-10-15 16:18:16,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:16,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:18:16,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:18:16,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:18:16,337 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 16:18:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:16,477 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-10-15 16:18:16,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:18:16,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 16:18:16,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:16,479 INFO L225 Difference]: With dead ends: 42 [2022-10-15 16:18:16,479 INFO L226 Difference]: Without dead ends: 42 [2022-10-15 16:18:16,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:18:16,482 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 43 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:16,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 55 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:18:16,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-15 16:18:16,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-10-15 16:18:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 40 states have internal predecessors, (44), 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 16:18:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-10-15 16:18:16,491 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 8 [2022-10-15 16:18:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:16,491 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-10-15 16:18:16,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 16:18:16,492 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-10-15 16:18:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 16:18:16,493 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:16,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:16,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:18:16,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:16,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:16,495 INFO L85 PathProgramCache]: Analyzing trace with hash 533007623, now seen corresponding path program 1 times [2022-10-15 16:18:16,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:16,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440212952] [2022-10-15 16:18:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:16,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:16,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:16,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440212952] [2022-10-15 16:18:16,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440212952] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:18:16,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185886078] [2022-10-15 16:18:16,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:16,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:16,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:16,825 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 16:18:16,853 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 16:18:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:16,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:18:16,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:18:17,079 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-15 16:18:17,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-10-15 16:18:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:17,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:18:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:17,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185886078] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:18:17,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:18:17,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-10-15 16:18:17,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935402110] [2022-10-15 16:18:17,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:18:17,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 16:18:17,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:17,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 16:18:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:18:17,518 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 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 16:18:17,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:17,700 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2022-10-15 16:18:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:18:17,701 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 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 16:18:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:17,702 INFO L225 Difference]: With dead ends: 52 [2022-10-15 16:18:17,702 INFO L226 Difference]: Without dead ends: 52 [2022-10-15 16:18:17,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:18:17,704 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 114 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:17,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 53 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:18:17,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-15 16:18:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2022-10-15 16:18:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-10-15 16:18:17,711 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 12 [2022-10-15 16:18:17,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:17,712 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-10-15 16:18:17,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 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 16:18:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-10-15 16:18:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 16:18:17,713 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:17,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:17,752 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 16:18:17,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:17,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:17,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash -656678400, now seen corresponding path program 1 times [2022-10-15 16:18:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:17,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900505642] [2022-10-15 16:18:17,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:17,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:18:17,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:17,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900505642] [2022-10-15 16:18:17,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900505642] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:17,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:17,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:18:17,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928466819] [2022-10-15 16:18:17,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:17,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:18:17,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:17,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:18:17,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:18:17,993 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 16:18:18,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:18,032 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2022-10-15 16:18:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:18:18,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2022-10-15 16:18:18,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:18,033 INFO L225 Difference]: With dead ends: 42 [2022-10-15 16:18:18,034 INFO L226 Difference]: Without dead ends: 42 [2022-10-15 16:18:18,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:18:18,035 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:18,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 43 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:18,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-15 16:18:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2022-10-15 16:18:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:18,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2022-10-15 16:18:18,041 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 13 [2022-10-15 16:18:18,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:18,042 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2022-10-15 16:18:18,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 16:18:18,042 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2022-10-15 16:18:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:18:18,043 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:18,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:18,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 16:18:18,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:18,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:18,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1117807372, now seen corresponding path program 1 times [2022-10-15 16:18:18,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:18,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245293982] [2022-10-15 16:18:18,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:18,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:18,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:18,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245293982] [2022-10-15 16:18:18,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245293982] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:18,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:18,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:18:18,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067602834] [2022-10-15 16:18:18,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:18,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:18:18,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:18,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:18:18,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:18:18,138 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 16:18:18,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:18,176 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-10-15 16:18:18,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:18:18,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 14 [2022-10-15 16:18:18,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:18,181 INFO L225 Difference]: With dead ends: 35 [2022-10-15 16:18:18,181 INFO L226 Difference]: Without dead ends: 35 [2022-10-15 16:18:18,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:18:18,184 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:18,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 24 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-10-15 16:18:18,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-10-15 16:18:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 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 16:18:18,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-10-15 16:18:18,190 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 14 [2022-10-15 16:18:18,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:18,190 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-10-15 16:18:18,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 16:18:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-10-15 16:18:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:18:18,191 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:18,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:18,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 16:18:18,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:18,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1117807373, now seen corresponding path program 1 times [2022-10-15 16:18:18,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:18,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782026354] [2022-10-15 16:18:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:18,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:18,311 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 16:18:18,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:18,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782026354] [2022-10-15 16:18:18,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782026354] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:18:18,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406222469] [2022-10-15 16:18:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:18,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:18,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:18,314 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 16:18:18,322 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 16:18:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:18,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 16:18:18,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:18:18,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:18:18,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-10-15 16:18:18,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-15 16:18:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:18:18,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:18:18,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406222469] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:18,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:18:18,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-10-15 16:18:18,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769462093] [2022-10-15 16:18:18,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:18,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:18:18,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:18,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:18:18,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:18:18,455 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 16:18:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:18,475 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-10-15 16:18:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:18:18,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 14 [2022-10-15 16:18:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:18,477 INFO L225 Difference]: With dead ends: 31 [2022-10-15 16:18:18,477 INFO L226 Difference]: Without dead ends: 31 [2022-10-15 16:18:18,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:18:18,501 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:18,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:18,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-10-15 16:18:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-10-15 16:18:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 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 16:18:18,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-10-15 16:18:18,518 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 14 [2022-10-15 16:18:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:18,518 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-10-15 16:18:18,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 16:18:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-10-15 16:18:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 16:18:18,521 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:18,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:18,565 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 16:18:18,735 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,SelfDestructingSolverStorable6 [2022-10-15 16:18:18,736 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:18,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1906382886, now seen corresponding path program 1 times [2022-10-15 16:18:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:18,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455473570] [2022-10-15 16:18:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:18,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:18:18,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:18,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455473570] [2022-10-15 16:18:18,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455473570] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:18,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:18,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 16:18:18,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916098043] [2022-10-15 16:18:18,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:18,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 16:18:18,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:18,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 16:18:18,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:18:18,924 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 16:18:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:18,999 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-10-15 16:18:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 16:18:19,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 20 [2022-10-15 16:18:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:19,001 INFO L225 Difference]: With dead ends: 41 [2022-10-15 16:18:19,001 INFO L226 Difference]: Without dead ends: 41 [2022-10-15 16:18:19,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:18:19,002 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:19,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 63 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:19,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-15 16:18:19,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2022-10-15 16:18:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 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 16:18:19,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-10-15 16:18:19,006 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 20 [2022-10-15 16:18:19,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:19,007 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-10-15 16:18:19,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 16:18:19,007 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-10-15 16:18:19,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 16:18:19,008 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:19,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:19,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 16:18:19,009 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:19,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:19,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1031677724, now seen corresponding path program 1 times [2022-10-15 16:18:19,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:19,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212606380] [2022-10-15 16:18:19,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:19,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:18:19,033 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-15 16:18:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:18:19,066 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-15 16:18:19,067 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-15 16:18:19,068 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (15 of 16 remaining) [2022-10-15 16:18:19,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 16 remaining) [2022-10-15 16:18:19,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2022-10-15 16:18:19,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2022-10-15 16:18:19,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2022-10-15 16:18:19,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2022-10-15 16:18:19,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2022-10-15 16:18:19,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2022-10-15 16:18:19,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2022-10-15 16:18:19,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2022-10-15 16:18:19,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2022-10-15 16:18:19,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2022-10-15 16:18:19,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 16 remaining) [2022-10-15 16:18:19,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 16 remaining) [2022-10-15 16:18:19,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 16 remaining) [2022-10-15 16:18:19,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2022-10-15 16:18:19,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 16:18:19,079 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:19,083 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 16:18:19,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 04:18:19 BoogieIcfgContainer [2022-10-15 16:18:19,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 16:18:19,117 INFO L158 Benchmark]: Toolchain (without parser) took 5080.11ms. Allocated memory was 154.1MB in the beginning and 185.6MB in the end (delta: 31.5MB). Free memory was 129.2MB in the beginning and 125.3MB in the end (delta: 3.9MB). Peak memory consumption was 35.9MB. Max. memory is 8.0GB. [2022-10-15 16:18:19,118 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 154.1MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 16:18:19,118 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.04ms. Allocated memory is still 154.1MB. Free memory was 129.1MB in the beginning and 118.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-15 16:18:19,119 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.22ms. Allocated memory is still 154.1MB. Free memory was 118.9MB in the beginning and 117.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 16:18:19,119 INFO L158 Benchmark]: Boogie Preprocessor took 33.27ms. Allocated memory is still 154.1MB. Free memory was 117.3MB in the beginning and 115.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 16:18:19,120 INFO L158 Benchmark]: RCFGBuilder took 522.76ms. Allocated memory is still 154.1MB. Free memory was 115.9MB in the beginning and 102.1MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-10-15 16:18:19,120 INFO L158 Benchmark]: TraceAbstraction took 4176.52ms. Allocated memory was 154.1MB in the beginning and 185.6MB in the end (delta: 31.5MB). Free memory was 101.6MB in the beginning and 125.3MB in the end (delta: -23.7MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-10-15 16:18:19,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 154.1MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 288.04ms. Allocated memory is still 154.1MB. Free memory was 129.1MB in the beginning and 118.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.22ms. Allocated memory is still 154.1MB. Free memory was 118.9MB in the beginning and 117.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.27ms. Allocated memory is still 154.1MB. Free memory was 117.3MB in the beginning and 115.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 522.76ms. Allocated memory is still 154.1MB. Free memory was 115.9MB in the beginning and 102.1MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4176.52ms. Allocated memory was 154.1MB in the beginning and 185.6MB in the end (delta: 31.5MB). Free memory was 101.6MB in the beginning and 125.3MB in the end (delta: -23.7MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 21. Possible FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [a={-1:0}, i=0, N=1, sum={5:0}] [L31] COND TRUE i