/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-dietlibc/stpcpy.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:55:23,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:55:23,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:55:23,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:55:23,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:55:23,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:55:23,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:55:23,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:55:23,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:55:23,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:55:23,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:55:23,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:55:23,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:55:23,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:55:23,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:55:23,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:55:23,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:55:23,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:55:23,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:55:23,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:55:23,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:55:23,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:55:23,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:55:23,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:55:23,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:55:23,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:55:23,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:55:23,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:55:23,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:55:23,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:55:23,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:55:23,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:55:23,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:55:23,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:55:23,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:55:23,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:55:23,492 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 17:55:23,551 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:55:23,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:55:23,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:55:23,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:55:23,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:55:23,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:55:23,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:55:23,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:55:23,558 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:55:23,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:55:23,560 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:55:23,560 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:55:23,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:55:23,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:55:23,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:55:23,561 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:55:23,562 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:55:23,562 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:55:23,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:55:23,562 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:55:23,563 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:55:23,563 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:55:23,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:55:23,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:55:23,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:55:23,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:55:23,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:55:23,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:55:23,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:55:23,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:55:23,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:55:23,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:55:24,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:55:24,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:55:24,017 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:55:24,018 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:55:24,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-dietlibc/stpcpy.i [2022-10-15 17:55:24,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/381b0c897/c2d994f2e71d48e09079804da355feea/FLAG1261d7cb5 [2022-10-15 17:55:24,766 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:55:24,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-dietlibc/stpcpy.i [2022-10-15 17:55:24,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/381b0c897/c2d994f2e71d48e09079804da355feea/FLAG1261d7cb5 [2022-10-15 17:55:25,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/381b0c897/c2d994f2e71d48e09079804da355feea [2022-10-15 17:55:25,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:55:25,038 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:55:25,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:55:25,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:55:25,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:55:25,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692ba707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25, skipping insertion in model container [2022-10-15 17:55:25,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:55:25,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:55:25,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:55:25,425 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:55:25,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:55:25,570 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:55:25,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25 WrapperNode [2022-10-15 17:55:25,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:55:25,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:55:25,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:55:25,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:55:25,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,659 INFO L138 Inliner]: procedures = 113, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2022-10-15 17:55:25,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:55:25,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:55:25,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:55:25,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:55:25,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,692 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:55:25,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:55:25,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:55:25,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:55:25,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25" (1/1) ... [2022-10-15 17:55:25,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:55:25,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:55:25,738 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 17:55:25,762 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 17:55:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:55:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:55:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:55:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:55:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:55:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:55:25,897 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:55:25,900 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:55:26,183 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:55:26,195 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:55:26,195 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 17:55:26,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:55:26 BoogieIcfgContainer [2022-10-15 17:55:26,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:55:26,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:55:26,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:55:26,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:55:26,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:55:25" (1/3) ... [2022-10-15 17:55:26,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b13cae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:55:26, skipping insertion in model container [2022-10-15 17:55:26,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:25" (2/3) ... [2022-10-15 17:55:26,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b13cae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:55:26, skipping insertion in model container [2022-10-15 17:55:26,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:55:26" (3/3) ... [2022-10-15 17:55:26,210 INFO L112 eAbstractionObserver]: Analyzing ICFG stpcpy.i [2022-10-15 17:55:26,233 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:55:26,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-10-15 17:55:26,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:55:26,298 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;@683ee6f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:55:26,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-15 17:55:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:26,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:55:26,324 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:26,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:55:26,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:26,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:26,342 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2022-10-15 17:55:26,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:26,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416677645] [2022-10-15 17:55:26,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:26,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:26,560 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 17:55:26,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:26,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416677645] [2022-10-15 17:55:26,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416677645] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:55:26,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:55:26,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:55:26,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78497186] [2022-10-15 17:55:26,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:55:26,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:55:26,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:55:26,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:55:26,614 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 17:55:26,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:26,686 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-10-15 17:55:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:55:26,695 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 17:55:26,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:26,707 INFO L225 Difference]: With dead ends: 23 [2022-10-15 17:55:26,707 INFO L226 Difference]: Without dead ends: 20 [2022-10-15 17:55:26,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:55:26,718 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:26,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:55:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-15 17:55:26,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-15 17:55:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 19 states have internal predecessors, (21), 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 17:55:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-10-15 17:55:26,762 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 4 [2022-10-15 17:55:26,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:26,763 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-10-15 17:55:26,763 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 17:55:26,764 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-10-15 17:55:26,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:55:26,764 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:26,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:55:26,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:55:26,766 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:26,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:26,769 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2022-10-15 17:55:26,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:26,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711290534] [2022-10-15 17:55:26,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:26,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:26,949 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 17:55:26,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:26,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711290534] [2022-10-15 17:55:26,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711290534] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:55:26,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:55:26,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:55:26,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540373069] [2022-10-15 17:55:26,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:55:26,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:55:26,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:26,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:55:26,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:55:26,955 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. 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 17:55:26,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:26,979 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-10-15 17:55:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:55:26,979 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 17:55:26,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:26,980 INFO L225 Difference]: With dead ends: 19 [2022-10-15 17:55:26,980 INFO L226 Difference]: Without dead ends: 19 [2022-10-15 17:55:26,981 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 17:55:26,983 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:26,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 11 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:55:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-10-15 17:55:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-10-15 17:55:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 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 17:55:26,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-10-15 17:55:26,988 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2022-10-15 17:55:26,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:26,989 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-10-15 17:55:26,989 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 17:55:26,989 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-10-15 17:55:26,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:55:26,990 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:26,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:55:26,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:55:26,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:26,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:26,991 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2022-10-15 17:55:26,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:26,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766069278] [2022-10-15 17:55:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:26,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:27,118 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 17:55:27,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:27,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766069278] [2022-10-15 17:55:27,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766069278] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:55:27,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:55:27,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:55:27,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215182296] [2022-10-15 17:55:27,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:55:27,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:55:27,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:27,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:55:27,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:55:27,122 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. 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 17:55:27,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:27,139 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-10-15 17:55:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:55:27,140 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 17:55:27,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:27,141 INFO L225 Difference]: With dead ends: 18 [2022-10-15 17:55:27,141 INFO L226 Difference]: Without dead ends: 18 [2022-10-15 17:55:27,141 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 17:55:27,143 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:27,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 13 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:55:27,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-10-15 17:55:27,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-10-15 17:55:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 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 17:55:27,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-10-15 17:55:27,148 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 4 [2022-10-15 17:55:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:27,149 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-10-15 17:55:27,149 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 17:55:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-10-15 17:55:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 17:55:27,150 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:27,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:27,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:55:27,150 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:27,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1806782657, now seen corresponding path program 1 times [2022-10-15 17:55:27,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:27,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373032138] [2022-10-15 17:55:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:27,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:27,343 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 17:55:27,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:27,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373032138] [2022-10-15 17:55:27,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373032138] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:55:27,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:55:27,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:55:27,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010650139] [2022-10-15 17:55:27,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:55:27,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:55:27,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:27,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:55:27,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:55:27,348 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 17:55:27,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:27,381 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-10-15 17:55:27,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:55:27,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 17:55:27,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:27,383 INFO L225 Difference]: With dead ends: 19 [2022-10-15 17:55:27,383 INFO L226 Difference]: Without dead ends: 18 [2022-10-15 17:55:27,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:55:27,385 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:27,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:55:27,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-10-15 17:55:27,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-10-15 17:55:27,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 17 states have internal predecessors, (18), 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 17:55:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-10-15 17:55:27,390 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2022-10-15 17:55:27,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:27,391 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-10-15 17:55:27,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 17:55:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-10-15 17:55:27,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 17:55:27,392 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:27,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:27,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:55:27,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:27,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash 175688875, now seen corresponding path program 1 times [2022-10-15 17:55:27,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:27,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372881307] [2022-10-15 17:55:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:27,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:27,687 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 17:55:27,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:27,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372881307] [2022-10-15 17:55:27,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372881307] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:55:27,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:55:27,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:55:27,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724841] [2022-10-15 17:55:27,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:55:27,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:55:27,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:27,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:55:27,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:55:27,694 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:27,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:27,761 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-10-15 17:55:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:55:27,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 17:55:27,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:27,762 INFO L225 Difference]: With dead ends: 17 [2022-10-15 17:55:27,762 INFO L226 Difference]: Without dead ends: 17 [2022-10-15 17:55:27,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:55:27,765 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:27,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 12 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:55:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-10-15 17:55:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-10-15 17:55:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-10-15 17:55:27,770 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 8 [2022-10-15 17:55:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:27,771 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-10-15 17:55:27,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-10-15 17:55:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 17:55:27,772 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:27,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:27,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:55:27,774 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:27,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:27,774 INFO L85 PathProgramCache]: Analyzing trace with hash 175688876, now seen corresponding path program 1 times [2022-10-15 17:55:27,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:27,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377224864] [2022-10-15 17:55:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:28,015 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 17:55:28,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:28,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377224864] [2022-10-15 17:55:28,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377224864] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:55:28,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:55:28,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:55:28,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884746323] [2022-10-15 17:55:28,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:55:28,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:55:28,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:28,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:55:28,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:55:28,019 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:28,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:28,096 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-10-15 17:55:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:55:28,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 17:55:28,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:28,098 INFO L225 Difference]: With dead ends: 23 [2022-10-15 17:55:28,098 INFO L226 Difference]: Without dead ends: 23 [2022-10-15 17:55:28,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:55:28,100 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:28,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 21 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:55:28,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-15 17:55:28,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2022-10-15 17:55:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 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 17:55:28,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-10-15 17:55:28,106 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 8 [2022-10-15 17:55:28,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:28,107 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-10-15 17:55:28,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:28,107 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-10-15 17:55:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 17:55:28,108 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:28,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:28,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 17:55:28,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:28,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1151387824, now seen corresponding path program 1 times [2022-10-15 17:55:28,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:28,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074674033] [2022-10-15 17:55:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:28,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:28,192 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 17:55:28,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:28,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074674033] [2022-10-15 17:55:28,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074674033] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:55:28,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:55:28,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:55:28,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809900621] [2022-10-15 17:55:28,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:55:28,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:55:28,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:28,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:55:28,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:55:28,196 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 17:55:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:28,229 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-10-15 17:55:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:55:28,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-10-15 17:55:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:28,231 INFO L225 Difference]: With dead ends: 18 [2022-10-15 17:55:28,231 INFO L226 Difference]: Without dead ends: 18 [2022-10-15 17:55:28,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:55:28,233 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:28,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:55:28,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-10-15 17:55:28,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-10-15 17:55:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 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 17:55:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-10-15 17:55:28,238 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2022-10-15 17:55:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:28,238 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-10-15 17:55:28,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 17:55:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-10-15 17:55:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 17:55:28,239 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:28,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:28,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 17:55:28,240 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:28,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1151387825, now seen corresponding path program 1 times [2022-10-15 17:55:28,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:28,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177568973] [2022-10-15 17:55:28,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:28,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:28,435 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 17:55:28,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:28,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177568973] [2022-10-15 17:55:28,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177568973] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:55:28,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:55:28,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:55:28,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479885679] [2022-10-15 17:55:28,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:55:28,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:55:28,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:28,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:55:28,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:55:28,445 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 17:55:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:28,517 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-10-15 17:55:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:55:28,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2022-10-15 17:55:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:28,521 INFO L225 Difference]: With dead ends: 20 [2022-10-15 17:55:28,521 INFO L226 Difference]: Without dead ends: 20 [2022-10-15 17:55:28,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:55:28,524 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:28,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 25 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:55:28,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-15 17:55:28,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-10-15 17:55:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 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 17:55:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-10-15 17:55:28,534 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2022-10-15 17:55:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:28,535 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-10-15 17:55:28,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 17:55:28,538 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-10-15 17:55:28,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 17:55:28,540 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:28,540 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:28,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 17:55:28,542 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:28,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:28,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1385840564, now seen corresponding path program 1 times [2022-10-15 17:55:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:28,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227954860] [2022-10-15 17:55:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:28,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:29,297 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 17:55:29,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:29,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227954860] [2022-10-15 17:55:29,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227954860] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:55:29,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548539590] [2022-10-15 17:55:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:29,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:55:29,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:55:29,306 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 17:55:29,310 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 17:55:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:29,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 43 conjunts are in the unsatisfiable core [2022-10-15 17:55:29,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:55:29,487 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 14 treesize of output 10 [2022-10-15 17:55:29,676 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-15 17:55:29,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-10-15 17:55:29,784 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-15 17:55:29,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-15 17:55:29,964 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 17:55:29,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2022-10-15 17:55:30,054 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 17:55:30,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:55:30,379 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 13 treesize of output 11 [2022-10-15 17:55:30,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-15 17:55:30,391 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 16 treesize of output 12 [2022-10-15 17:55:30,401 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 22 treesize of output 20 [2022-10-15 17:55:30,414 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-10-15 17:55:30,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-10-15 17:55:30,425 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 17:55:30,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548539590] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:55:30,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:55:30,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-10-15 17:55:30,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006622463] [2022-10-15 17:55:30,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:55:30,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-15 17:55:30,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:30,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-15 17:55:30,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-10-15 17:55:30,429 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:30,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:30,651 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-10-15 17:55:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:55:30,652 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 17:55:30,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:30,653 INFO L225 Difference]: With dead ends: 25 [2022-10-15 17:55:30,653 INFO L226 Difference]: Without dead ends: 25 [2022-10-15 17:55:30,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2022-10-15 17:55:30,655 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:30,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2022-10-15 17:55:30,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-10-15 17:55:30,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2022-10-15 17:55:30,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 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 17:55:30,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-10-15 17:55:30,659 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 12 [2022-10-15 17:55:30,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:30,660 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-10-15 17:55:30,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:30,660 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-10-15 17:55:30,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 17:55:30,661 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:30,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:30,707 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 17:55:30,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:55:30,874 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:30,875 INFO L85 PathProgramCache]: Analyzing trace with hash 11384489, now seen corresponding path program 1 times [2022-10-15 17:55:30,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:30,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618678444] [2022-10-15 17:55:30,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:30,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:31,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:31,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618678444] [2022-10-15 17:55:31,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618678444] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:55:31,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421279783] [2022-10-15 17:55:31,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:31,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:55:31,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:55:31,429 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 17:55:31,457 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 17:55:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:31,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-15 17:55:31,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:55:31,563 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 17:55:31,642 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-15 17:55:31,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-15 17:55:31,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-10-15 17:55:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:31,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:55:32,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-15 17:55:32,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-15 17:55:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:32,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421279783] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:55:32,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:55:32,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-10-15 17:55:32,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353278551] [2022-10-15 17:55:32,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:55:32,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-15 17:55:32,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:32,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-15 17:55:32,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-10-15 17:55:32,350 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 26 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 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 17:55:32,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:32,768 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2022-10-15 17:55:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 17:55:32,769 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-15 17:55:32,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:32,770 INFO L225 Difference]: With dead ends: 36 [2022-10-15 17:55:32,770 INFO L226 Difference]: Without dead ends: 36 [2022-10-15 17:55:32,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:55:32,772 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 56 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:32,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 63 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 116 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2022-10-15 17:55:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-15 17:55:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2022-10-15 17:55:32,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.25) internal successors, (30), 26 states have internal predecessors, (30), 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 17:55:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-10-15 17:55:32,776 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 13 [2022-10-15 17:55:32,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:32,777 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-10-15 17:55:32,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 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 17:55:32,777 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-10-15 17:55:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 17:55:32,778 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:32,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:32,826 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 17:55:32,978 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,SelfDestructingSolverStorable9 [2022-10-15 17:55:32,980 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:32,981 INFO L85 PathProgramCache]: Analyzing trace with hash 11339831, now seen corresponding path program 1 times [2022-10-15 17:55:32,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:32,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949835375] [2022-10-15 17:55:32,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:32,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:33,140 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 17:55:33,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:33,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949835375] [2022-10-15 17:55:33,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949835375] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:55:33,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:55:33,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:55:33,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113145825] [2022-10-15 17:55:33,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:55:33,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:55:33,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:33,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:55:33,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:55:33,143 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:33,168 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-10-15 17:55:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:55:33,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-15 17:55:33,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:33,171 INFO L225 Difference]: With dead ends: 26 [2022-10-15 17:55:33,171 INFO L226 Difference]: Without dead ends: 23 [2022-10-15 17:55:33,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:55:33,172 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:33,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 29 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:55:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-15 17:55:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-15 17:55:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 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 17:55:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-10-15 17:55:33,176 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2022-10-15 17:55:33,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:33,176 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-10-15 17:55:33,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:33,177 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-10-15 17:55:33,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 17:55:33,177 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:33,178 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:33,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-15 17:55:33,178 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:33,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:33,179 INFO L85 PathProgramCache]: Analyzing trace with hash -147132740, now seen corresponding path program 2 times [2022-10-15 17:55:33,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:33,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355150097] [2022-10-15 17:55:33,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:33,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:33,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:33,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355150097] [2022-10-15 17:55:33,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355150097] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:55:33,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508409101] [2022-10-15 17:55:33,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:55:33,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:55:33,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:55:33,880 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 17:55:33,882 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 17:55:33,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:55:33,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:55:33,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-15 17:55:33,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:55:33,966 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 17:55:33,998 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 14 treesize of output 10 [2022-10-15 17:55:34,090 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-15 17:55:34,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 19 treesize of output 23 [2022-10-15 17:55:34,152 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-15 17:55:34,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-15 17:55:34,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-10-15 17:55:34,537 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 17:55:34,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2022-10-15 17:55:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:34,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:55:35,384 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 17:55:35,385 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-10-15 17:55:35,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-15 17:55:35,399 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-10-15 17:55:35,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2022-10-15 17:55:35,413 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-10-15 17:55:35,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-10-15 17:55:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:35,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508409101] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:55:35,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:55:35,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-10-15 17:55:35,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865530464] [2022-10-15 17:55:35,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:55:35,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-10-15 17:55:35,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-10-15 17:55:35,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=768, Unknown=7, NotChecked=0, Total=870 [2022-10-15 17:55:35,539 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 30 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:36,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:36,011 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-10-15 17:55:36,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 17:55:36,012 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-15 17:55:36,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:36,013 INFO L225 Difference]: With dead ends: 24 [2022-10-15 17:55:36,013 INFO L226 Difference]: Without dead ends: 24 [2022-10-15 17:55:36,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=156, Invalid=1169, Unknown=7, NotChecked=0, Total=1332 [2022-10-15 17:55:36,015 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:36,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 61 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 102 Invalid, 0 Unknown, 90 Unchecked, 0.1s Time] [2022-10-15 17:55:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-10-15 17:55:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-10-15 17:55:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 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 17:55:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-10-15 17:55:36,021 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2022-10-15 17:55:36,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:36,021 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-10-15 17:55:36,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:36,022 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-10-15 17:55:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 17:55:36,023 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:36,023 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:36,055 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 17:55:36,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:55:36,239 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash -295904828, now seen corresponding path program 3 times [2022-10-15 17:55:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:36,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531754194] [2022-10-15 17:55:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:36,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:36,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:36,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531754194] [2022-10-15 17:55:36,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531754194] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:55:36,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816808657] [2022-10-15 17:55:36,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:55:36,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:55:36,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:55:36,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:55:37,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:55:37,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-15 17:55:37,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:55:37,083 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 96 conjunts are in the unsatisfiable core [2022-10-15 17:55:37,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:55:37,096 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 17:55:37,107 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 16 treesize of output 12 [2022-10-15 17:55:37,189 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-15 17:55:37,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 18 treesize of output 24 [2022-10-15 17:55:37,221 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-15 17:55:37,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-15 17:55:37,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-15 17:55:37,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-15 17:55:37,629 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 17:55:37,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-10-15 17:55:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:37,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:55:38,507 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc8#1.base_8| Int) (|v_ULTIMATE.start_stpcpy_#t~post3#1.offset_27| Int) (v_ArrVal_133 Int) (v_ArrVal_135 (Array Int Int))) (let ((.cse0 (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc8#1.base_8| v_ArrVal_133) |c_ULTIMATE.start_main_~in~0#1.base|))) (or (< |c_ULTIMATE.start_main_~in~0#1.offset| |v_ULTIMATE.start_stpcpy_#t~post3#1.offset_27|) (< .cse0 (+ 3 |v_ULTIMATE.start_stpcpy_#t~post3#1.offset_27|)) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_8| v_ArrVal_135) |c_ULTIMATE.start_main_~in~0#1.base|) (+ 2 |v_ULTIMATE.start_stpcpy_#t~post3#1.offset_27|)) 0) (< |v_ULTIMATE.start_stpcpy_#t~post3#1.offset_27| 0) (<= (+ |v_ULTIMATE.start_stpcpy_#t~post3#1.offset_27| 4) .cse0) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc8#1.base_8|) 0))))) is different from false [2022-10-15 17:55:38,573 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 17:55:38,574 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-10-15 17:55:38,588 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-10-15 17:55:38,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-10-15 17:55:38,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-15 17:55:38,603 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-10-15 17:55:38,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2022-10-15 17:55:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:38,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816808657] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:55:38,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:55:38,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 37 [2022-10-15 17:55:38,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256519280] [2022-10-15 17:55:38,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:55:38,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-10-15 17:55:38,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:38,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-10-15 17:55:38,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1161, Unknown=5, NotChecked=70, Total=1406 [2022-10-15 17:55:38,788 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 38 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 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 17:55:40,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:40,449 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-10-15 17:55:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-15 17:55:40,450 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-15 17:55:40,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:40,451 INFO L225 Difference]: With dead ends: 28 [2022-10-15 17:55:40,451 INFO L226 Difference]: Without dead ends: 28 [2022-10-15 17:55:40,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=462, Invalid=2293, Unknown=5, NotChecked=102, Total=2862 [2022-10-15 17:55:40,453 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 65 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:40,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 42 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 266 Invalid, 0 Unknown, 36 Unchecked, 0.3s Time] [2022-10-15 17:55:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-15 17:55:40,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2022-10-15 17:55:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 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 17:55:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-10-15 17:55:40,457 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2022-10-15 17:55:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:40,458 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-10-15 17:55:40,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 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 17:55:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-10-15 17:55:40,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 17:55:40,459 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:40,459 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:40,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 17:55:40,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:55:40,672 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-10-15 17:55:40,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash -583115111, now seen corresponding path program 2 times [2022-10-15 17:55:40,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:40,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950434060] [2022-10-15 17:55:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:40,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:41,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:41,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950434060] [2022-10-15 17:55:41,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950434060] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:55:41,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616131399] [2022-10-15 17:55:41,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:55:41,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:55:41,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:55:41,347 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:55:41,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:55:41,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:55:41,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:55:41,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 76 conjunts are in the unsatisfiable core [2022-10-15 17:55:41,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:55:41,447 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 17:55:41,507 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-15 17:55:41,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-15 17:55:41,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-10-15 17:55:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:41,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:55:42,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-15 17:55:42,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-15 17:55:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:42,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616131399] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:55:42,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:55:42,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2022-10-15 17:55:42,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923101472] [2022-10-15 17:55:42,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:55:42,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-15 17:55:42,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:42,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-15 17:55:42,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:55:42,486 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 33 states have internal predecessors, (59), 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 17:55:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:43,292 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-10-15 17:55:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-15 17:55:43,293 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.84375) internal successors, (59), 33 states have internal predecessors, (59), 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 21 [2022-10-15 17:55:43,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:43,296 INFO L225 Difference]: With dead ends: 25 [2022-10-15 17:55:43,296 INFO L226 Difference]: Without dead ends: 0 [2022-10-15 17:55:43,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=356, Invalid=1806, Unknown=0, NotChecked=0, Total=2162 [2022-10-15 17:55:43,299 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:43,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 62 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 145 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2022-10-15 17:55:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-15 17:55:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-15 17:55:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-15 17:55:43,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-10-15 17:55:43,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:43,304 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-15 17:55:43,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.84375) internal successors, (59), 33 states have internal predecessors, (59), 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 17:55:43,304 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-15 17:55:43,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-15 17:55:43,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2022-10-15 17:55:43,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2022-10-15 17:55:43,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2022-10-15 17:55:43,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2022-10-15 17:55:43,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2022-10-15 17:55:43,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2022-10-15 17:55:43,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2022-10-15 17:55:43,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:55:43,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-15 17:55:43,532 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:43,535 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 17:55:43,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 05:55:43 BoogieIcfgContainer [2022-10-15 17:55:43,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 17:55:43,539 INFO L158 Benchmark]: Toolchain (without parser) took 18505.40ms. Allocated memory was 151.0MB in the beginning and 292.6MB in the end (delta: 141.6MB). Free memory was 124.8MB in the beginning and 116.0MB in the end (delta: 8.8MB). Peak memory consumption was 151.0MB. Max. memory is 8.0GB. [2022-10-15 17:55:43,540 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 151.0MB. Free memory was 120.7MB in the beginning and 120.6MB in the end (delta: 88.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 17:55:43,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 528.63ms. Allocated memory is still 151.0MB. Free memory was 124.6MB in the beginning and 108.9MB in the end (delta: 15.6MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-10-15 17:55:43,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.53ms. Allocated memory is still 151.0MB. Free memory was 108.9MB in the beginning and 107.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 17:55:43,541 INFO L158 Benchmark]: Boogie Preprocessor took 34.65ms. Allocated memory is still 151.0MB. Free memory was 107.0MB in the beginning and 105.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 17:55:43,541 INFO L158 Benchmark]: RCFGBuilder took 501.26ms. Allocated memory is still 151.0MB. Free memory was 105.7MB in the beginning and 130.7MB in the end (delta: -25.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-10-15 17:55:43,541 INFO L158 Benchmark]: TraceAbstraction took 17337.52ms. Allocated memory was 151.0MB in the beginning and 292.6MB in the end (delta: 141.6MB). Free memory was 130.3MB in the beginning and 116.0MB in the end (delta: 14.2MB). Peak memory consumption was 157.0MB. Max. memory is 8.0GB. [2022-10-15 17:55:43,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 151.0MB. Free memory was 120.7MB in the beginning and 120.6MB in the end (delta: 88.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 528.63ms. Allocated memory is still 151.0MB. Free memory was 124.6MB in the beginning and 108.9MB in the end (delta: 15.6MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 87.53ms. Allocated memory is still 151.0MB. Free memory was 108.9MB in the beginning and 107.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.65ms. Allocated memory is still 151.0MB. Free memory was 107.0MB in the beginning and 105.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 501.26ms. Allocated memory is still 151.0MB. Free memory was 105.7MB in the beginning and 130.7MB in the end (delta: -25.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 17337.52ms. Allocated memory was 151.0MB in the beginning and 292.6MB in the end (delta: 141.6MB). Free memory was 130.3MB in the beginning and 116.0MB in the end (delta: 14.2MB). Peak memory consumption was 157.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 510]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 17.3s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 260 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 260 mSDsluCounter, 487 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 236 IncrementalHoareTripleChecker+Unchecked, 345 mSDsCounter, 136 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 905 IncrementalHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 136 mSolverCounterUnsat, 142 mSDtfsCounter, 905 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 298 GetRequests, 81 SyntacticMatches, 5 SemanticMatches, 212 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1660 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=10, InterpolantAutomatonStates: 117, 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, 14 MinimizatonAttempts, 24 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 288 ConstructedInterpolants, 41 QuantifiedInterpolants, 4786 SizeOfPredicates, 116 NumberOfNonLiveVariables, 777 ConjunctsInSsa, 314 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 7/156 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-15 17:55:43,601 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...