/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 18:00:27,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 18:00:27,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 18:00:27,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 18:00:27,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 18:00:27,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 18:00:27,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 18:00:27,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 18:00:27,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 18:00:27,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 18:00:27,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 18:00:27,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 18:00:27,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 18:00:27,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 18:00:27,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 18:00:27,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 18:00:27,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 18:00:27,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 18:00:27,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 18:00:27,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 18:00:27,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 18:00:27,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 18:00:27,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 18:00:27,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 18:00:27,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 18:00:27,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 18:00:27,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 18:00:27,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 18:00:27,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 18:00:27,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 18:00:27,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 18:00:27,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 18:00:27,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 18:00:27,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 18:00:27,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 18:00:27,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 18:00:27,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 18:00:27,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 18:00:27,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 18:00:27,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 18:00:27,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 18:00:27,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 18:00:27,510 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 18:00:27,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 18:00:27,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 18:00:27,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 18:00:27,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 18:00:27,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 18:00:27,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 18:00:27,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 18:00:27,519 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 18:00:27,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 18:00:27,521 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 18:00:27,521 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 18:00:27,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 18:00:27,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 18:00:27,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 18:00:27,522 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 18:00:27,523 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 18:00:27,523 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 18:00:27,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 18:00:27,523 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 18:00:27,523 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 18:00:27,524 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 18:00:27,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 18:00:27,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 18:00:27,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 18:00:27,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:00:27,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 18:00:27,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 18:00:27,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 18:00:27,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 18:00:27,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 18:00:27,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 18:00:27,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 18:00:27,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 18:00:27,945 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 18:00:27,945 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 18:00:27,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex5.i [2022-10-15 18:00:28,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff51d075b/d1c94a5f6b6c48318783a00fc6012619/FLAG96faed01a [2022-10-15 18:00:28,703 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 18:00:28,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex5.i [2022-10-15 18:00:28,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff51d075b/d1c94a5f6b6c48318783a00fc6012619/FLAG96faed01a [2022-10-15 18:00:29,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff51d075b/d1c94a5f6b6c48318783a00fc6012619 [2022-10-15 18:00:29,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 18:00:29,085 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 18:00:29,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 18:00:29,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 18:00:29,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 18:00:29,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2a643d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29, skipping insertion in model container [2022-10-15 18:00:29,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 18:00:29,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 18:00:29,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:00:29,300 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 18:00:29,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:00:29,332 INFO L208 MainTranslator]: Completed translation [2022-10-15 18:00:29,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29 WrapperNode [2022-10-15 18:00:29,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 18:00:29,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 18:00:29,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 18:00:29,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 18:00:29,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,385 INFO L138 Inliner]: procedures = 12, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2022-10-15 18:00:29,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 18:00:29,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 18:00:29,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 18:00:29,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 18:00:29,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,441 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 18:00:29,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 18:00:29,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 18:00:29,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 18:00:29,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29" (1/1) ... [2022-10-15 18:00:29,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:00:29,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:00:29,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 18:00:29,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 18:00:29,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 18:00:29,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 18:00:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-10-15 18:00:29,562 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-10-15 18:00:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-10-15 18:00:29,562 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2022-10-15 18:00:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 18:00:29,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 18:00:29,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 18:00:29,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 18:00:29,651 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 18:00:29,654 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 18:00:30,179 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 18:00:30,188 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 18:00:30,188 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 18:00:30,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:00:30 BoogieIcfgContainer [2022-10-15 18:00:30,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 18:00:30,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 18:00:30,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 18:00:30,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 18:00:30,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:00:29" (1/3) ... [2022-10-15 18:00:30,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f9235a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:00:30, skipping insertion in model container [2022-10-15 18:00:30,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:29" (2/3) ... [2022-10-15 18:00:30,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f9235a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:00:30, skipping insertion in model container [2022-10-15 18:00:30,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:00:30" (3/3) ... [2022-10-15 18:00:30,203 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_malloc_ex5.i [2022-10-15 18:00:30,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 18:00:30,231 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2022-10-15 18:00:30,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 18:00:30,333 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;@4b450235, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 18:00:30,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-10-15 18:00:30,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 73 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 18:00:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 18:00:30,372 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:30,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 18:00:30,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0ASSERT_VIOLATIONMEMORY_FREE, fErr1ASSERT_VIOLATIONMEMORY_FREE, fErr2ASSERT_VIOLATIONMEMORY_FREE, fErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-10-15 18:00:30,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:30,389 INFO L85 PathProgramCache]: Analyzing trace with hash 78514, now seen corresponding path program 1 times [2022-10-15 18:00:30,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:30,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451916334] [2022-10-15 18:00:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:30,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:30,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:30,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451916334] [2022-10-15 18:00:30,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451916334] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:30,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:30,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:00:30,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273934362] [2022-10-15 18:00:30,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:30,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:00:30,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:30,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:00:30,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:30,911 INFO L87 Difference]: Start difference. First operand has 80 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 73 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:31,017 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2022-10-15 18:00:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:00:31,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-10-15 18:00:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:31,030 INFO L225 Difference]: With dead ends: 82 [2022-10-15 18:00:31,031 INFO L226 Difference]: Without dead ends: 78 [2022-10-15 18:00:31,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:31,038 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 24 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:31,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 108 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:31,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-10-15 18:00:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2022-10-15 18:00:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 69 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 18:00:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2022-10-15 18:00:31,089 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 3 [2022-10-15 18:00:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:31,089 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2022-10-15 18:00:31,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:31,090 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2022-10-15 18:00:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 18:00:31,090 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:31,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 18:00:31,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 18:00:31,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0ASSERT_VIOLATIONMEMORY_FREE, fErr1ASSERT_VIOLATIONMEMORY_FREE, fErr2ASSERT_VIOLATIONMEMORY_FREE, fErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-10-15 18:00:31,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:31,092 INFO L85 PathProgramCache]: Analyzing trace with hash 78515, now seen corresponding path program 1 times [2022-10-15 18:00:31,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:31,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992589745] [2022-10-15 18:00:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:31,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:31,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:31,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992589745] [2022-10-15 18:00:31,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992589745] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:31,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:31,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:00:31,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382068392] [2022-10-15 18:00:31,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:31,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:00:31,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:31,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:00:31,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:31,252 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:31,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:31,322 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2022-10-15 18:00:31,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:00:31,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-10-15 18:00:31,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:31,325 INFO L225 Difference]: With dead ends: 76 [2022-10-15 18:00:31,325 INFO L226 Difference]: Without dead ends: 76 [2022-10-15 18:00:31,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:31,327 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 20 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:31,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 110 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-10-15 18:00:31,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-10-15 18:00:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 67 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 18:00:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2022-10-15 18:00:31,340 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 3 [2022-10-15 18:00:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:31,341 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2022-10-15 18:00:31,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2022-10-15 18:00:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 18:00:31,342 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:31,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 18:00:31,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 18:00:31,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0ASSERT_VIOLATIONMEMORY_FREE, fErr1ASSERT_VIOLATIONMEMORY_FREE, fErr2ASSERT_VIOLATIONMEMORY_FREE, fErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-10-15 18:00:31,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:31,344 INFO L85 PathProgramCache]: Analyzing trace with hash 75452755, now seen corresponding path program 1 times [2022-10-15 18:00:31,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:31,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008692645] [2022-10-15 18:00:31,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:31,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:31,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:31,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008692645] [2022-10-15 18:00:31,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008692645] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:31,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:31,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:00:31,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254509102] [2022-10-15 18:00:31,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:31,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:00:31,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:31,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:00:31,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:31,451 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:31,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:31,539 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2022-10-15 18:00:31,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:00:31,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-15 18:00:31,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:31,544 INFO L225 Difference]: With dead ends: 73 [2022-10-15 18:00:31,545 INFO L226 Difference]: Without dead ends: 73 [2022-10-15 18:00:31,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:31,557 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 15 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:31,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 105 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-10-15 18:00:31,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2022-10-15 18:00:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 64 states have internal predecessors, (68), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 18:00:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2022-10-15 18:00:31,589 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 5 [2022-10-15 18:00:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:31,589 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2022-10-15 18:00:31,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:31,592 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2022-10-15 18:00:31,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 18:00:31,593 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:31,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 18:00:31,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 18:00:31,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0ASSERT_VIOLATIONMEMORY_FREE, fErr1ASSERT_VIOLATIONMEMORY_FREE, fErr2ASSERT_VIOLATIONMEMORY_FREE, fErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-10-15 18:00:31,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:31,598 INFO L85 PathProgramCache]: Analyzing trace with hash 75452756, now seen corresponding path program 1 times [2022-10-15 18:00:31,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:31,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503199217] [2022-10-15 18:00:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:31,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:31,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:31,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503199217] [2022-10-15 18:00:31,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503199217] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:31,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:31,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:00:31,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699236025] [2022-10-15 18:00:31,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:31,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:00:31,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:00:31,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:31,722 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:31,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:31,766 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2022-10-15 18:00:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:00:31,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-15 18:00:31,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:31,768 INFO L225 Difference]: With dead ends: 70 [2022-10-15 18:00:31,768 INFO L226 Difference]: Without dead ends: 70 [2022-10-15 18:00:31,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:31,770 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 12 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:31,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 113 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:00:31,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-10-15 18:00:31,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2022-10-15 18:00:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 61 states have internal predecessors, (65), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 18:00:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2022-10-15 18:00:31,781 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 5 [2022-10-15 18:00:31,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:31,782 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2022-10-15 18:00:31,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:31,782 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2022-10-15 18:00:31,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-15 18:00:31,786 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:31,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:31,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 18:00:31,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [fErr0ASSERT_VIOLATIONMEMORY_FREE, fErr1ASSERT_VIOLATIONMEMORY_FREE, fErr2ASSERT_VIOLATIONMEMORY_FREE, fErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-10-15 18:00:31,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:31,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1680433307, now seen corresponding path program 1 times [2022-10-15 18:00:31,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:31,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478010260] [2022-10-15 18:00:31,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:31,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 18:00:31,842 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-15 18:00:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 18:00:31,883 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-15 18:00:31,883 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-15 18:00:31,885 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (30 of 31 remaining) [2022-10-15 18:00:31,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr0ASSERT_VIOLATIONMEMORY_FREE (29 of 31 remaining) [2022-10-15 18:00:31,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr1ASSERT_VIOLATIONMEMORY_FREE (28 of 31 remaining) [2022-10-15 18:00:31,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr2ASSERT_VIOLATIONMEMORY_FREE (27 of 31 remaining) [2022-10-15 18:00:31,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 31 remaining) [2022-10-15 18:00:31,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 31 remaining) [2022-10-15 18:00:31,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2022-10-15 18:00:31,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2022-10-15 18:00:31,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr2ASSERT_VIOLATIONMEMORY_FREE (22 of 31 remaining) [2022-10-15 18:00:31,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr3ASSERT_VIOLATIONMEMORY_FREE (21 of 31 remaining) [2022-10-15 18:00:31,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr4ASSERT_VIOLATIONMEMORY_FREE (20 of 31 remaining) [2022-10-15 18:00:31,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 31 remaining) [2022-10-15 18:00:31,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 31 remaining) [2022-10-15 18:00:31,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2022-10-15 18:00:31,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2022-10-15 18:00:31,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr9ASSERT_VIOLATIONMEMORY_FREE (15 of 31 remaining) [2022-10-15 18:00:31,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr10ASSERT_VIOLATIONMEMORY_FREE (14 of 31 remaining) [2022-10-15 18:00:31,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr11ASSERT_VIOLATIONMEMORY_FREE (13 of 31 remaining) [2022-10-15 18:00:31,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2022-10-15 18:00:31,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 31 remaining) [2022-10-15 18:00:31,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 31 remaining) [2022-10-15 18:00:31,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 31 remaining) [2022-10-15 18:00:31,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 31 remaining) [2022-10-15 18:00:31,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2022-10-15 18:00:31,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2022-10-15 18:00:31,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2022-10-15 18:00:31,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2022-10-15 18:00:31,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2022-10-15 18:00:31,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (2 of 31 remaining) [2022-10-15 18:00:31,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (1 of 31 remaining) [2022-10-15 18:00:31,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (0 of 31 remaining) [2022-10-15 18:00:31,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 18:00:31,910 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-10-15 18:00:31,916 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 18:00:31,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:00:31 BoogieIcfgContainer [2022-10-15 18:00:31,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 18:00:31,959 INFO L158 Benchmark]: Toolchain (without parser) took 2878.44ms. Allocated memory is still 151.0MB. Free memory was 124.4MB in the beginning and 60.6MB in the end (delta: 63.8MB). Peak memory consumption was 63.9MB. Max. memory is 8.0GB. [2022-10-15 18:00:31,959 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 151.0MB. Free memory was 121.3MB in the beginning and 121.1MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 18:00:31,960 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.39ms. Allocated memory is still 151.0MB. Free memory was 124.2MB in the beginning and 114.7MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-15 18:00:31,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.16ms. Allocated memory is still 151.0MB. Free memory was 114.7MB in the beginning and 113.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 18:00:31,961 INFO L158 Benchmark]: Boogie Preprocessor took 64.83ms. Allocated memory is still 151.0MB. Free memory was 113.2MB in the beginning and 112.0MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 18:00:31,962 INFO L158 Benchmark]: RCFGBuilder took 736.08ms. Allocated memory is still 151.0MB. Free memory was 111.8MB in the beginning and 128.3MB in the end (delta: -16.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-10-15 18:00:31,962 INFO L158 Benchmark]: TraceAbstraction took 1763.05ms. Allocated memory is still 151.0MB. Free memory was 127.7MB in the beginning and 60.6MB in the end (delta: 67.1MB). Peak memory consumption was 67.1MB. Max. memory is 8.0GB. [2022-10-15 18:00:31,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 151.0MB. Free memory was 121.3MB in the beginning and 121.1MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 244.39ms. Allocated memory is still 151.0MB. Free memory was 124.2MB in the beginning and 114.7MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.16ms. Allocated memory is still 151.0MB. Free memory was 114.7MB in the beginning and 113.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.83ms. Allocated memory is still 151.0MB. Free memory was 113.2MB in the beginning and 112.0MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 736.08ms. Allocated memory is still 151.0MB. Free memory was 111.8MB in the beginning and 128.3MB in the end (delta: -16.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1763.05ms. Allocated memory is still 151.0MB. Free memory was 127.7MB in the beginning and 60.6MB in the end (delta: 67.1MB). Peak memory consumption was 67.1MB. 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: 54]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 54. Possible FailurePath: [L56] int *p1 = malloc(sizeof(int)); [L57] int *p2 = malloc(sizeof(int)); [L60] *p1 = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-1, p1={-2:0}, p2={-3:0}] [L61] *p2 = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=2, p1={-2:0}, p2={-3:0}] [L63] EXPR \read(*p1) VAL [\read(*p1)=-1, p1={-2:0}, p2={-3:0}] [L63] *p1 < 0 || *p2 < 0 VAL [*p1 < 0 || *p2 < 0=1, \read(*p1)=-1, p1={-2:0}, p2={-3:0}] [L63] COND TRUE *p1 < 0 || *p2 < 0 [L64] return 0; VAL [\result=0, p1={-2:0}, p2={-3:0}] - UnprovableResult [Line: 18]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that free always succeeds Unable to prove that free 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: 35]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 35]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 35]: Unable to prove that free always succeeds Unable to prove that free 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: 45]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that free always succeeds Unable to prove that free 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: 68]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 80 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 436 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 159 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113 IncrementalHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 277 mSDtfsCounter, 113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 18:00:32,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...