/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/condm.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:18:35,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:18:35,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:18:35,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:18:35,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:18:35,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:18:35,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:18:35,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:18:35,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:18:35,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:18:35,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:18:35,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:18:35,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:18:35,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:18:35,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:18:35,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:18:35,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:18:35,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:18:35,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:18:35,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:18:35,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:18:35,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:18:35,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:18:35,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:18:35,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 16:18:35,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 16:18:35,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 16:18:35,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 16:18:35,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 16:18:35,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 16:18:35,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:18:35,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:18:35,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:18:35,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:18:35,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:18:35,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:18:35,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:18:35,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:18:35,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:18:35,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:18:35,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:18:35,277 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 16:18:35,306 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:18:35,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:18:35,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:18:35,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:18:35,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:18:35,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:18:35,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:18:35,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:18:35,310 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:18:35,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:18:35,310 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:18:35,310 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:18:35,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:18:35,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:18:35,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:18:35,311 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:18:35,311 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:18:35,311 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:18:35,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:18:35,312 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:18:35,312 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:18:35,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:18:35,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:18:35,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:18:35,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:18:35,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:18:35,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:18:35,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:18:35,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:18:35,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:18:35,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:18:35,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:18:35,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:18:35,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:18:35,725 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:18:35,729 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:18:35,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condm.c [2022-10-15 16:18:35,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14cd4186/bbaa769298264effa9cf84cbdc8b094a/FLAG5f4cc91eb [2022-10-15 16:18:36,480 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:18:36,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condm.c [2022-10-15 16:18:36,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14cd4186/bbaa769298264effa9cf84cbdc8b094a/FLAG5f4cc91eb [2022-10-15 16:18:36,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14cd4186/bbaa769298264effa9cf84cbdc8b094a [2022-10-15 16:18:36,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:18:36,514 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:18:36,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:18:36,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:18:36,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:18:36,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746423b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36, skipping insertion in model container [2022-10-15 16:18:36,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:18:36,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:18:36,724 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/condm.c[588,601] [2022-10-15 16:18:36,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:18:36,761 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:18:36,781 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/condm.c[588,601] [2022-10-15 16:18:36,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:18:36,830 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:18:36,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36 WrapperNode [2022-10-15 16:18:36,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:18:36,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:18:36,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:18:36,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:18:36,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,907 INFO L138 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2022-10-15 16:18:36,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:18:36,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:18:36,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:18:36,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:18:36,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,941 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:18:36,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:18:36,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:18:36,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:18:36,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36" (1/1) ... [2022-10-15 16:18:36,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:18:36,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:36,987 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 16:18:37,012 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 16:18:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:18:37,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:18:37,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:18:37,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 16:18:37,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:18:37,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:18:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:18:37,134 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:18:37,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:18:37,391 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:18:37,399 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:18:37,399 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 16:18:37,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:18:37 BoogieIcfgContainer [2022-10-15 16:18:37,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:18:37,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:18:37,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:18:37,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:18:37,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:18:36" (1/3) ... [2022-10-15 16:18:37,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5591f4ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:18:37, skipping insertion in model container [2022-10-15 16:18:37,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:36" (2/3) ... [2022-10-15 16:18:37,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5591f4ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:18:37, skipping insertion in model container [2022-10-15 16:18:37,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:18:37" (3/3) ... [2022-10-15 16:18:37,413 INFO L112 eAbstractionObserver]: Analyzing ICFG condm.c [2022-10-15 16:18:37,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:18:37,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-10-15 16:18:37,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:18:37,516 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;@3841065b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:18:37,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-10-15 16:18:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 43 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:37,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:18:37,546 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:37,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:18:37,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 16:18:37,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:37,559 INFO L85 PathProgramCache]: Analyzing trace with hash 925692, now seen corresponding path program 1 times [2022-10-15 16:18:37,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:37,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071108995] [2022-10-15 16:18:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:37,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:37,954 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 16:18:37,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:37,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071108995] [2022-10-15 16:18:37,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071108995] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:37,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:37,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:18:37,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435705956] [2022-10-15 16:18:37,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:37,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:18:37,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:38,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:18:38,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:18:38,010 INFO L87 Difference]: Start difference. First operand has 44 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 43 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 16:18:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:38,072 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2022-10-15 16:18:38,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:18:38,076 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 16:18:38,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:38,085 INFO L225 Difference]: With dead ends: 45 [2022-10-15 16:18:38,085 INFO L226 Difference]: Without dead ends: 42 [2022-10-15 16:18:38,087 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 16:18:38,092 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:38,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 73 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:38,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-15 16:18:38,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-10-15 16:18:38,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 41 states have internal predecessors, (45), 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 16:18:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2022-10-15 16:18:38,135 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 4 [2022-10-15 16:18:38,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:38,136 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2022-10-15 16:18:38,136 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 16:18:38,136 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2022-10-15 16:18:38,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 16:18:38,137 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:38,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:38,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:18:38,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 16:18:38,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:38,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1806904936, now seen corresponding path program 1 times [2022-10-15 16:18:38,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:38,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348654883] [2022-10-15 16:18:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:38,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:38,275 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 16:18:38,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:38,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348654883] [2022-10-15 16:18:38,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348654883] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:38,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:38,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:18:38,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423721899] [2022-10-15 16:18:38,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:38,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:18:38,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:38,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:18:38,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:18:38,280 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 16:18:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:38,324 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-10-15 16:18:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:18:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-10-15 16:18:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:38,326 INFO L225 Difference]: With dead ends: 36 [2022-10-15 16:18:38,326 INFO L226 Difference]: Without dead ends: 36 [2022-10-15 16:18:38,327 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 16:18:38,329 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 33 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:38,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 28 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-15 16:18:38,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-10-15 16:18:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.3928571428571428) 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 16:18:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-10-15 16:18:38,337 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 7 [2022-10-15 16:18:38,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:38,337 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-10-15 16:18:38,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 16:18:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-10-15 16:18:38,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 16:18:38,338 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:38,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:38,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:18:38,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 16:18:38,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1806904937, now seen corresponding path program 1 times [2022-10-15 16:18:38,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:38,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769123849] [2022-10-15 16:18:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:38,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:38,608 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 16:18:38,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:38,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769123849] [2022-10-15 16:18:38,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769123849] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:38,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:38,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:18:38,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659708919] [2022-10-15 16:18:38,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:38,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:18:38,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:38,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:18:38,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:18:38,615 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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 16:18:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:38,725 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-10-15 16:18:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:18:38,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2022-10-15 16:18:38,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:38,727 INFO L225 Difference]: With dead ends: 39 [2022-10-15 16:18:38,727 INFO L226 Difference]: Without dead ends: 39 [2022-10-15 16:18:38,727 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 16:18:38,734 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 39 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:38,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 46 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:18:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-10-15 16:18:38,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-10-15 16:18:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.3666666666666667) 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 16:18:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-10-15 16:18:38,742 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2022-10-15 16:18:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:38,742 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-10-15 16:18:38,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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 16:18:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-10-15 16:18:38,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 16:18:38,744 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:38,744 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:38,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:18:38,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 16:18:38,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:38,745 INFO L85 PathProgramCache]: Analyzing trace with hash 679824471, now seen corresponding path program 1 times [2022-10-15 16:18:38,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:38,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326654165] [2022-10-15 16:18:38,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:38,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:39,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:39,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326654165] [2022-10-15 16:18:39,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326654165] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:18:39,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111091012] [2022-10-15 16:18:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:39,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:39,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:39,044 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 16:18:39,061 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 16:18:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:39,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:18:39,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:18:39,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:18:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:39,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:18:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:39,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111091012] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:18:39,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:18:39,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-10-15 16:18:39,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890966781] [2022-10-15 16:18:39,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:18:39,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 16:18:39,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:39,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 16:18:39,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:18:39,574 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 16:18:39,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:39,812 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-10-15 16:18:39,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:18:39,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 10 [2022-10-15 16:18:39,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:39,814 INFO L225 Difference]: With dead ends: 54 [2022-10-15 16:18:39,814 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 16:18:39,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 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 16:18:39,817 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 156 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:39,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 58 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:18:39,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 16:18:39,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 31. [2022-10-15 16:18:39,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 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 16:18:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-10-15 16:18:39,824 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2022-10-15 16:18:39,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:39,824 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-10-15 16:18:39,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 16:18:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-10-15 16:18:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 16:18:39,826 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:39,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:39,867 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 16:18:40,039 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 16:18:40,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 16:18:40,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:40,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1240989422, now seen corresponding path program 1 times [2022-10-15 16:18:40,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:40,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370449976] [2022-10-15 16:18:40,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:40,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:40,158 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 16:18:40,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:40,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370449976] [2022-10-15 16:18:40,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370449976] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:40,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:40,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:18:40,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294132999] [2022-10-15 16:18:40,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:40,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:18:40,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:40,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:18:40,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:18:40,167 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:40,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:40,235 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-10-15 16:18:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:18:40,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-15 16:18:40,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:40,237 INFO L225 Difference]: With dead ends: 50 [2022-10-15 16:18:40,237 INFO L226 Difference]: Without dead ends: 50 [2022-10-15 16:18:40,238 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 16:18:40,239 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 41 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:40,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 23 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:18:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-15 16:18:40,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 33. [2022-10-15 16:18:40,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-10-15 16:18:40,245 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 15 [2022-10-15 16:18:40,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:40,246 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-10-15 16:18:40,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-10-15 16:18:40,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-15 16:18:40,247 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:40,247 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, 1, 1] [2022-10-15 16:18:40,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 16:18:40,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 16:18:40,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:40,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1757708258, now seen corresponding path program 1 times [2022-10-15 16:18:40,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:40,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166800738] [2022-10-15 16:18:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:40,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:43,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:43,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166800738] [2022-10-15 16:18:43,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166800738] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:18:43,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674317764] [2022-10-15 16:18:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:43,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:43,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:43,190 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 16:18:43,216 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 16:18:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:43,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-15 16:18:43,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:18:43,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-15 16:18:43,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 46 treesize of output 20 [2022-10-15 16:18:43,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-10-15 16:18:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:43,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:18:44,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-10-15 16:18:44,592 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 30 treesize of output 28 [2022-10-15 16:18:44,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-10-15 16:18:44,609 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 14 treesize of output 12 [2022-10-15 16:18:44,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-10-15 16:18:44,620 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 14 treesize of output 12 [2022-10-15 16:18:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:44,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674317764] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:18:44,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:18:44,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-10-15 16:18:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754434837] [2022-10-15 16:18:44,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:18:44,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-15 16:18:44,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:44,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-15 16:18:44,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-10-15 16:18:44,690 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:46,459 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2022-10-15 16:18:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-15 16:18:46,460 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-15 16:18:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:46,461 INFO L225 Difference]: With dead ends: 119 [2022-10-15 16:18:46,461 INFO L226 Difference]: Without dead ends: 119 [2022-10-15 16:18:46,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 28 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=337, Invalid=1469, Unknown=0, NotChecked=0, Total=1806 [2022-10-15 16:18:46,464 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 278 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:46,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 204 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 16:18:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-10-15 16:18:46,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 57. [2022-10-15 16:18:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 56 states have internal predecessors, (64), 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 16:18:46,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2022-10-15 16:18:46,474 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 23 [2022-10-15 16:18:46,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:46,474 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2022-10-15 16:18:46,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2022-10-15 16:18:46,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-15 16:18:46,476 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:46,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:46,514 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 16:18:46,691 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,SelfDestructingSolverStorable5 [2022-10-15 16:18:46,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 16:18:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:46,694 INFO L85 PathProgramCache]: Analyzing trace with hash 795019152, now seen corresponding path program 1 times [2022-10-15 16:18:46,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:46,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348208429] [2022-10-15 16:18:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:46,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:46,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:46,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348208429] [2022-10-15 16:18:46,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348208429] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:18:46,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198404027] [2022-10-15 16:18:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:46,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:46,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:46,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:18:46,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 16:18:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:46,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 16:18:46,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:18:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:46,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:18:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:46,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198404027] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:18:46,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:18:46,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-10-15 16:18:46,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49971460] [2022-10-15 16:18:46,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:18:46,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 16:18:46,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:46,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 16:18:46,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:18:46,984 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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 16:18:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:47,249 INFO L93 Difference]: Finished difference Result 109 states and 117 transitions. [2022-10-15 16:18:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 16:18:47,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-10-15 16:18:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:47,251 INFO L225 Difference]: With dead ends: 109 [2022-10-15 16:18:47,251 INFO L226 Difference]: Without dead ends: 109 [2022-10-15 16:18:47,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-10-15 16:18:47,253 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 153 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:47,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 112 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:18:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-10-15 16:18:47,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2022-10-15 16:18:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 1.125) internal successors, (99), 89 states have internal predecessors, (99), 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 16:18:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2022-10-15 16:18:47,264 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 26 [2022-10-15 16:18:47,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:47,264 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2022-10-15 16:18:47,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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 16:18:47,265 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2022-10-15 16:18:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-15 16:18:47,266 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:47,266 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, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:47,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:18:47,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:47,471 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 16:18:47,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:47,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2044035698, now seen corresponding path program 1 times [2022-10-15 16:18:47,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:47,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608157685] [2022-10-15 16:18:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:47,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:18:47,535 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-15 16:18:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:18:47,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-15 16:18:47,610 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-15 16:18:47,612 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (13 of 14 remaining) [2022-10-15 16:18:47,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2022-10-15 16:18:47,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2022-10-15 16:18:47,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2022-10-15 16:18:47,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2022-10-15 16:18:47,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2022-10-15 16:18:47,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2022-10-15 16:18:47,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2022-10-15 16:18:47,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2022-10-15 16:18:47,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2022-10-15 16:18:47,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2022-10-15 16:18:47,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2022-10-15 16:18:47,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2022-10-15 16:18:47,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (0 of 14 remaining) [2022-10-15 16:18:47,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 16:18:47,622 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:47,626 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 16:18:47,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 04:18:47 BoogieIcfgContainer [2022-10-15 16:18:47,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 16:18:47,688 INFO L158 Benchmark]: Toolchain (without parser) took 11177.59ms. Allocated memory was 165.7MB in the beginning and 244.3MB in the end (delta: 78.6MB). Free memory was 140.2MB in the beginning and 108.6MB in the end (delta: 31.6MB). Peak memory consumption was 110.9MB. Max. memory is 8.0GB. [2022-10-15 16:18:47,688 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 16:18:47,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.62ms. Allocated memory is still 165.7MB. Free memory was 140.0MB in the beginning and 129.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-15 16:18:47,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.55ms. Allocated memory is still 165.7MB. Free memory was 129.2MB in the beginning and 127.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 16:18:47,690 INFO L158 Benchmark]: Boogie Preprocessor took 33.77ms. Allocated memory is still 165.7MB. Free memory was 127.6MB in the beginning and 126.4MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 16:18:47,693 INFO L158 Benchmark]: RCFGBuilder took 456.58ms. Allocated memory is still 165.7MB. Free memory was 126.4MB in the beginning and 113.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-10-15 16:18:47,694 INFO L158 Benchmark]: TraceAbstraction took 10281.74ms. Allocated memory was 165.7MB in the beginning and 244.3MB in the end (delta: 78.6MB). Free memory was 112.6MB in the beginning and 108.6MB in the end (delta: 4.0MB). Peak memory consumption was 83.7MB. Max. memory is 8.0GB. [2022-10-15 16:18:47,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 319.62ms. Allocated memory is still 165.7MB. Free memory was 140.0MB in the beginning and 129.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 70.55ms. Allocated memory is still 165.7MB. Free memory was 129.2MB in the beginning and 127.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.77ms. Allocated memory is still 165.7MB. Free memory was 127.6MB in the beginning and 126.4MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 456.58ms. Allocated memory is still 165.7MB. Free memory was 126.4MB in the beginning and 113.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 10281.74ms. Allocated memory was 165.7MB in the beginning and 244.3MB in the end (delta: 78.6MB). Free memory was 112.6MB in the beginning and 108.6MB in the end (delta: 4.0MB). Peak memory consumption was 83.7MB. 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] int *a = malloc(sizeof(int)*N); [L30] i = 0 VAL [a={-1:0}, i=0, N=1] [L30] COND TRUE i < N VAL [a={-1:0}, i=0, N=1] [L32] a[i] = 0 VAL [a={-1:0}, i=0, N=1] [L30] i++ VAL [a={-1:0}, i=1, N=1] [L30] COND FALSE !(i < N) VAL [a={-1:0}, i=1, N=1] [L35] i = 0 VAL [a={-1:0}, i=0, N=1] [L35] COND TRUE i < N VAL [a={-1:0}, i=0, N=1] [L37] COND FALSE !(N%2 == 0) VAL [a={-1:0}, i=0, N=1] [L40] EXPR a[i] VAL [a={-1:0}, a[i]=0, i=0, N=1] [L40] a[i] = a[i] + 1 VAL [a={-1:0}, a[i]=0, i=0, N=1] [L35] i++ VAL [a={-1:0}, i=1, N=1] [L35] COND FALSE !(i < N) VAL [a={-1:0}, i=1, N=1] [L44] i = 0 VAL [a={-1:0}, i=0, N=1] [L44] COND TRUE i < N VAL [a={-1:0}, i=0, N=1] [L46] EXPR a[i] VAL [a={-1:0}, a[i]=1, i=0, N=1] [L46] CALL __VERIFIER_assert(a[i] % 2 == N % 2) [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, N=1] [L46] RET __VERIFIER_assert(a[i] % 2 == N % 2) [L44] i++ VAL [a={-1:0}, i=1, N=1] [L44] COND FALSE !(i < N) VAL [a={-1:0}, i=1, N=1] [L48] return 1; VAL [\result=1, a={-1:0}, i=1, N=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 704 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 704 mSDsluCounter, 544 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 351 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1032 IncrementalHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 193 mSDtfsCounter, 1032 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 92 SyntacticMatches, 13 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=7, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 122 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 2511 SizeOfPredicates, 18 NumberOfNonLiveVariables, 275 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 4/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-15 16:18:47,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...