/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-examples/sanfoundry_10_ground.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 18:08:50,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 18:08:50,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 18:08:50,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 18:08:50,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 18:08:50,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 18:08:50,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 18:08:50,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 18:08:50,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 18:08:50,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 18:08:50,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 18:08:50,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 18:08:50,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 18:08:50,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 18:08:50,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 18:08:50,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 18:08:50,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 18:08:50,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 18:08:50,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 18:08:50,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 18:08:50,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 18:08:50,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 18:08:50,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 18:08:50,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 18:08:50,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 18:08:50,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 18:08:50,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 18:08:50,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 18:08:50,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 18:08:50,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 18:08:50,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 18:08:50,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 18:08:50,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 18:08:50,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 18:08:50,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 18:08:50,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 18:08:50,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 18:08:50,794 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 18:08:50,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 18:08:50,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 18:08:50,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 18:08:50,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 18:08:50,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 18:08:50,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 18:08:50,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 18:08:50,798 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 18:08:50,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 18:08:50,799 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 18:08:50,799 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 18:08:50,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 18:08:50,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 18:08:50,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 18:08:50,800 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 18:08:50,800 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 18:08:50,801 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 18:08:50,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 18:08:50,801 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 18:08:50,801 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 18:08:50,802 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 18:08:50,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 18:08:50,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 18:08:50,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 18:08:50,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:08:50,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 18:08:50,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 18:08:50,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 18:08:50,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 18:08:50,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 18:08:51,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 18:08:51,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 18:08:51,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 18:08:51,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 18:08:51,245 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 18:08:51,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/sanfoundry_10_ground.c [2022-10-15 18:08:51,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ec47eb3/12905dc5c86d4722822347bb8d1327e6/FLAG6ff081ca0 [2022-10-15 18:08:51,895 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 18:08:51,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_10_ground.c [2022-10-15 18:08:51,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ec47eb3/12905dc5c86d4722822347bb8d1327e6/FLAG6ff081ca0 [2022-10-15 18:08:52,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ec47eb3/12905dc5c86d4722822347bb8d1327e6 [2022-10-15 18:08:52,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 18:08:52,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 18:08:52,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 18:08:52,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 18:08:52,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 18:08:52,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58deb310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52, skipping insertion in model container [2022-10-15 18:08:52,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 18:08:52,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 18:08:52,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_10_ground.c[324,337] [2022-10-15 18:08:52,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:08:52,622 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 18:08:52,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_10_ground.c[324,337] [2022-10-15 18:08:52,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:08:52,666 INFO L208 MainTranslator]: Completed translation [2022-10-15 18:08:52,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52 WrapperNode [2022-10-15 18:08:52,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 18:08:52,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 18:08:52,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 18:08:52,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 18:08:52,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,710 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2022-10-15 18:08:52,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 18:08:52,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 18:08:52,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 18:08:52,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 18:08:52,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,738 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 18:08:52,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 18:08:52,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 18:08:52,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 18:08:52,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52" (1/1) ... [2022-10-15 18:08:52,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:08:52,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:08:52,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 18:08:52,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 18:08:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 18:08:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 18:08:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 18:08:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 18:08:52,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 18:08:52,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 18:08:52,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 18:08:52,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 18:08:52,944 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 18:08:52,947 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 18:08:53,336 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 18:08:53,348 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 18:08:53,349 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-15 18:08:53,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:08:53 BoogieIcfgContainer [2022-10-15 18:08:53,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 18:08:53,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 18:08:53,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 18:08:53,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 18:08:53,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:08:52" (1/3) ... [2022-10-15 18:08:53,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8696af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:08:53, skipping insertion in model container [2022-10-15 18:08:53,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:08:52" (2/3) ... [2022-10-15 18:08:53,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8696af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:08:53, skipping insertion in model container [2022-10-15 18:08:53,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:08:53" (3/3) ... [2022-10-15 18:08:53,372 INFO L112 eAbstractionObserver]: Analyzing ICFG sanfoundry_10_ground.c [2022-10-15 18:08:53,395 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 18:08:53,395 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-15 18:08:53,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 18:08:53,528 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;@34b3e636, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 18:08:53,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-15 18:08:53,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 40 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:53,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 18:08:53,544 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:08:53,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 18:08:53,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:08:53,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:08:53,555 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-10-15 18:08:53,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:08:53,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602687511] [2022-10-15 18:08:53,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:08:53,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:08:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:08:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:08:53,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:08:53,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602687511] [2022-10-15 18:08:53,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602687511] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:08:53,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:08:53,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:08:53,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985121940] [2022-10-15 18:08:53,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:08:53,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:08:53,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:08:53,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:08:53,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:08:53,991 INFO L87 Difference]: Start difference. First operand has 41 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 40 states have internal predecessors, (52), 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 18:08:54,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:08:54,057 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-10-15 18:08:54,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:08:54,060 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 18:08:54,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:08:54,070 INFO L225 Difference]: With dead ends: 36 [2022-10-15 18:08:54,070 INFO L226 Difference]: Without dead ends: 34 [2022-10-15 18:08:54,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:08:54,078 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 35 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:08:54,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 32 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:08:54,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-10-15 18:08:54,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-10-15 18:08:54,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:54,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-10-15 18:08:54,121 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 4 [2022-10-15 18:08:54,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:08:54,122 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-10-15 18:08:54,122 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 18:08:54,122 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-10-15 18:08:54,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 18:08:54,123 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:08:54,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 18:08:54,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 18:08:54,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:08:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:08:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-10-15 18:08:54,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:08:54,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014556159] [2022-10-15 18:08:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:08:54,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:08:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:08:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:08:54,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:08:54,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014556159] [2022-10-15 18:08:54,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014556159] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:08:54,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:08:54,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 18:08:54,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510509244] [2022-10-15 18:08:54,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:08:54,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 18:08:54,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:08:54,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 18:08:54,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:08:54,408 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 18:08:54,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:08:54,473 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-10-15 18:08:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:08:54,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 18:08:54,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:08:54,475 INFO L225 Difference]: With dead ends: 38 [2022-10-15 18:08:54,475 INFO L226 Difference]: Without dead ends: 38 [2022-10-15 18:08:54,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:08:54,477 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:08:54,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:08:54,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-15 18:08:54,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-10-15 18:08:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 35 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 18:08:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-10-15 18:08:54,486 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 4 [2022-10-15 18:08:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:08:54,487 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-10-15 18:08:54,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 18:08:54,487 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-10-15 18:08:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 18:08:54,488 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:08:54,488 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-15 18:08:54,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 18:08:54,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:08:54,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:08:54,491 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2022-10-15 18:08:54,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:08:54,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754471041] [2022-10-15 18:08:54,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:08:54,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:08:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:08:54,683 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 18:08:54,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:08:54,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754471041] [2022-10-15 18:08:54,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754471041] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:08:54,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509877292] [2022-10-15 18:08:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:08:54,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:08:54,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:08:54,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:08:54,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 18:08:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:08:54,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 18:08:54,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:08:54,854 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 18:08:54,937 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 18:08:54,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:08:55,035 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 18:08:55,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509877292] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:08:55,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:08:55,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-10-15 18:08:55,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200986061] [2022-10-15 18:08:55,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:08:55,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 18:08:55,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:08:55,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 18:08:55,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-10-15 18:08:55,040 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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 18:08:55,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:08:55,242 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2022-10-15 18:08:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 18:08:55,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) Word has length 8 [2022-10-15 18:08:55,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:08:55,246 INFO L225 Difference]: With dead ends: 65 [2022-10-15 18:08:55,246 INFO L226 Difference]: Without dead ends: 65 [2022-10-15 18:08:55,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-10-15 18:08:55,249 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 38 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:08:55,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 105 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:08:55,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-10-15 18:08:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2022-10-15 18:08:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 50 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:55,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2022-10-15 18:08:55,259 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 8 [2022-10-15 18:08:55,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:08:55,260 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2022-10-15 18:08:55,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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 18:08:55,260 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2022-10-15 18:08:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 18:08:55,261 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:08:55,261 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 18:08:55,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 18:08:55,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:08:55,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:08:55,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:08:55,480 INFO L85 PathProgramCache]: Analyzing trace with hash -144029224, now seen corresponding path program 1 times [2022-10-15 18:08:55,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:08:55,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689010250] [2022-10-15 18:08:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:08:55,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:08:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:08:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:08:55,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:08:55,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689010250] [2022-10-15 18:08:55,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689010250] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:08:55,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122169150] [2022-10-15 18:08:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:08:55,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:08:55,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:08:55,678 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:08:55,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 18:08:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:08:55,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 18:08:55,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:08:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:08:55,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:08:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:08:55,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122169150] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:08:55,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:08:55,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2022-10-15 18:08:55,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017417235] [2022-10-15 18:08:55,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:08:55,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 18:08:55,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:08:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 18:08:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-10-15 18:08:55,886 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:56,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:08:56,141 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2022-10-15 18:08:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 18:08:56,142 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 18:08:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:08:56,143 INFO L225 Difference]: With dead ends: 88 [2022-10-15 18:08:56,143 INFO L226 Difference]: Without dead ends: 88 [2022-10-15 18:08:56,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-10-15 18:08:56,145 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 114 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:08:56,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 144 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:08:56,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-10-15 18:08:56,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 60. [2022-10-15 18:08:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 53 states have (on average 1.320754716981132) internal successors, (70), 59 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:56,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2022-10-15 18:08:56,155 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 14 [2022-10-15 18:08:56,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:08:56,156 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2022-10-15 18:08:56,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:56,156 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2022-10-15 18:08:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 18:08:56,157 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:08:56,157 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2022-10-15 18:08:56,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 18:08:56,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 18:08:56,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:08:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:08:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2061457070, now seen corresponding path program 2 times [2022-10-15 18:08:56,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:08:56,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230076539] [2022-10-15 18:08:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:08:56,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:08:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:08:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:08:56,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:08:56,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230076539] [2022-10-15 18:08:56,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230076539] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:08:56,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767453402] [2022-10-15 18:08:56,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:08:56,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:08:56,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:08:56,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:08:56,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 18:08:56,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 18:08:56,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:08:56,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 18:08:56,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:08:56,909 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 18:08:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:08:57,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:08:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:08:57,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767453402] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:08:57,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:08:57,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-10-15 18:08:57,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811369126] [2022-10-15 18:08:57,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:08:57,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-15 18:08:57,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:08:57,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-15 18:08:57,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2022-10-15 18:08:57,639 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 20 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:58,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:08:58,147 INFO L93 Difference]: Finished difference Result 131 states and 161 transitions. [2022-10-15 18:08:58,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-15 18:08:58,148 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 20 states have internal predecessors, (58), 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 18:08:58,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:08:58,150 INFO L225 Difference]: With dead ends: 131 [2022-10-15 18:08:58,150 INFO L226 Difference]: Without dead ends: 131 [2022-10-15 18:08:58,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=388, Unknown=0, NotChecked=0, Total=600 [2022-10-15 18:08:58,152 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 203 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 18:08:58,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 365 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 18:08:58,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-10-15 18:08:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 56. [2022-10-15 18:08:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-10-15 18:08:58,160 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 20 [2022-10-15 18:08:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:08:58,161 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-10-15 18:08:58,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:58,161 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-10-15 18:08:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 18:08:58,162 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:08:58,162 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:08:58,203 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 18:08:58,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:08:58,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:08:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:08:58,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1934632586, now seen corresponding path program 1 times [2022-10-15 18:08:58,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:08:58,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530250465] [2022-10-15 18:08:58,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:08:58,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:08:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:08:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-15 18:08:58,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:08:58,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530250465] [2022-10-15 18:08:58,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530250465] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:08:58,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:08:58,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 18:08:58,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038878895] [2022-10-15 18:08:58,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:08:58,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 18:08:58,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:08:58,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 18:08:58,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:08:58,474 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:58,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:08:58,520 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2022-10-15 18:08:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 18:08:58,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-10-15 18:08:58,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:08:58,521 INFO L225 Difference]: With dead ends: 69 [2022-10-15 18:08:58,521 INFO L226 Difference]: Without dead ends: 69 [2022-10-15 18:08:58,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:08:58,523 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:08:58,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 74 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:08:58,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-15 18:08:58,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2022-10-15 18:08:58,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2022-10-15 18:08:58,529 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 32 [2022-10-15 18:08:58,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:08:58,530 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2022-10-15 18:08:58,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2022-10-15 18:08:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-15 18:08:58,531 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:08:58,532 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:08:58,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 18:08:58,532 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:08:58,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:08:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash 742703611, now seen corresponding path program 1 times [2022-10-15 18:08:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:08:58,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254179358] [2022-10-15 18:08:58,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:08:58,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:08:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:08:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-15 18:08:58,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:08:58,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254179358] [2022-10-15 18:08:58,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254179358] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:08:58,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926696106] [2022-10-15 18:08:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:08:58,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:08:58,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:08:58,770 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:08:58,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 18:08:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:08:58,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 18:08:58,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:08:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:08:58,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:08:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:08:59,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926696106] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:08:59,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:08:59,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 19 [2022-10-15 18:08:59,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747017414] [2022-10-15 18:08:59,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:08:59,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-15 18:08:59,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:08:59,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-15 18:08:59,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2022-10-15 18:08:59,141 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:59,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:08:59,798 INFO L93 Difference]: Finished difference Result 161 states and 184 transitions. [2022-10-15 18:08:59,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-15 18:08:59,799 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-10-15 18:08:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:08:59,800 INFO L225 Difference]: With dead ends: 161 [2022-10-15 18:08:59,800 INFO L226 Difference]: Without dead ends: 161 [2022-10-15 18:08:59,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=418, Invalid=1064, Unknown=0, NotChecked=0, Total=1482 [2022-10-15 18:08:59,802 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 172 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 18:08:59,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 256 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 18:08:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-10-15 18:08:59,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 104. [2022-10-15 18:08:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.202020202020202) internal successors, (119), 103 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions. [2022-10-15 18:08:59,814 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 36 [2022-10-15 18:08:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:08:59,814 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions. [2022-10-15 18:08:59,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:08:59,815 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions. [2022-10-15 18:08:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-10-15 18:08:59,822 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:08:59,822 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:08:59,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-15 18:09:00,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:09:00,023 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:09:00,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:09:00,025 INFO L85 PathProgramCache]: Analyzing trace with hash 101080287, now seen corresponding path program 1 times [2022-10-15 18:09:00,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:09:00,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146509317] [2022-10-15 18:09:00,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:09:00,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:09:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:09:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2022-10-15 18:09:00,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:09:00,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146509317] [2022-10-15 18:09:00,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146509317] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:09:00,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:09:00,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 18:09:00,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112576972] [2022-10-15 18:09:00,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:09:00,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:09:00,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:09:00,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:09:00,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:09:00,142 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:00,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:09:00,152 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2022-10-15 18:09:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:09:00,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) Word has length 69 [2022-10-15 18:09:00,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:09:00,157 INFO L225 Difference]: With dead ends: 103 [2022-10-15 18:09:00,157 INFO L226 Difference]: Without dead ends: 103 [2022-10-15 18:09:00,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:09:00,159 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 22 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:09:00,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 49 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:09:00,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-10-15 18:09:00,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2022-10-15 18:09:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.1368421052631579) internal successors, (108), 99 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2022-10-15 18:09:00,175 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 69 [2022-10-15 18:09:00,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:09:00,175 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2022-10-15 18:09:00,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:00,179 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2022-10-15 18:09:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-10-15 18:09:00,183 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:09:00,183 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:09:00,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 18:09:00,184 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:09:00,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:09:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1876087649, now seen corresponding path program 1 times [2022-10-15 18:09:00,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:09:00,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205449996] [2022-10-15 18:09:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:09:00,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:09:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:09:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:09:00,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:09:00,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205449996] [2022-10-15 18:09:00,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205449996] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:09:00,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005897968] [2022-10-15 18:09:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:09:00,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:09:00,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:09:00,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:09:00,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 18:09:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:09:00,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 18:09:00,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:09:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:09:01,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:09:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:09:01,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005897968] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:09:01,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:09:01,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-10-15 18:09:01,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786690911] [2022-10-15 18:09:01,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:09:01,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-15 18:09:01,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:09:01,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-15 18:09:01,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=1172, Unknown=0, NotChecked=0, Total=2162 [2022-10-15 18:09:01,749 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand has 47 states, 47 states have (on average 3.9361702127659575) internal successors, (185), 47 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:01,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:09:01,970 INFO L93 Difference]: Finished difference Result 177 states and 185 transitions. [2022-10-15 18:09:01,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 18:09:01,971 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.9361702127659575) internal successors, (185), 47 states have internal predecessors, (185), 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 69 [2022-10-15 18:09:01,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:09:01,972 INFO L225 Difference]: With dead ends: 177 [2022-10-15 18:09:01,972 INFO L226 Difference]: Without dead ends: 177 [2022-10-15 18:09:01,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=990, Invalid=1172, Unknown=0, NotChecked=0, Total=2162 [2022-10-15 18:09:01,974 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 207 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:09:01,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 195 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:09:01,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-10-15 18:09:01,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 164. [2022-10-15 18:09:01,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 159 states have (on average 1.0817610062893082) internal successors, (172), 163 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:01,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2022-10-15 18:09:01,984 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 69 [2022-10-15 18:09:01,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:09:01,984 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2022-10-15 18:09:01,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.9361702127659575) internal successors, (185), 47 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:01,985 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2022-10-15 18:09:01,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-10-15 18:09:01,987 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:09:01,987 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:09:02,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 18:09:02,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:09:02,203 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:09:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:09:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash 71976241, now seen corresponding path program 2 times [2022-10-15 18:09:02,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:09:02,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653047149] [2022-10-15 18:09:02,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:09:02,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:09:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:09:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:09:03,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:09:03,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653047149] [2022-10-15 18:09:03,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653047149] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:09:03,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708039952] [2022-10-15 18:09:03,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:09:03,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:09:03,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:09:03,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:09:03,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 18:09:03,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 18:09:03,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:09:03,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 18:09:03,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:09:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-10-15 18:09:04,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 18:09:04,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708039952] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:09:04,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 18:09:04,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [33] total 35 [2022-10-15 18:09:04,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437717515] [2022-10-15 18:09:04,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:09:04,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 18:09:04,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:09:04,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 18:09:04,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=658, Unknown=0, NotChecked=0, Total=1190 [2022-10-15 18:09:04,502 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:04,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:09:04,504 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2022-10-15 18:09:04,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 18:09:04,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) Word has length 133 [2022-10-15 18:09:04,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:09:04,506 INFO L225 Difference]: With dead ends: 169 [2022-10-15 18:09:04,506 INFO L226 Difference]: Without dead ends: 165 [2022-10-15 18:09:04,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=532, Invalid=658, Unknown=0, NotChecked=0, Total=1190 [2022-10-15 18:09:04,508 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:09:04,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 71 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-10-15 18:09:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-10-15 18:09:04,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2022-10-15 18:09:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 159 states have (on average 1.0754716981132075) internal successors, (171), 163 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 171 transitions. [2022-10-15 18:09:04,515 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 171 transitions. Word has length 133 [2022-10-15 18:09:04,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:09:04,516 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 171 transitions. [2022-10-15 18:09:04,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 171 transitions. [2022-10-15 18:09:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-15 18:09:04,518 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:09:04,518 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:09:04,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 18:09:04,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:09:04,733 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:09:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:09:04,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1276164905, now seen corresponding path program 1 times [2022-10-15 18:09:04,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:09:04,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798889303] [2022-10-15 18:09:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:09:04,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:09:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:09:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2022-10-15 18:09:05,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:09:05,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798889303] [2022-10-15 18:09:05,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798889303] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:09:05,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082670337] [2022-10-15 18:09:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:09:05,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:09:05,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:09:05,014 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:09:05,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 18:09:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:09:05,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-15 18:09:05,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:09:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:09:06,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:09:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:09:07,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082670337] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:09:07,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:09:07,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 33, 33] total 67 [2022-10-15 18:09:07,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852342878] [2022-10-15 18:09:07,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:09:07,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-10-15 18:09:07,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:09:07,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-10-15 18:09:07,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=2305, Unknown=0, NotChecked=0, Total=4422 [2022-10-15 18:09:07,536 INFO L87 Difference]: Start difference. First operand 164 states and 171 transitions. Second operand has 67 states, 67 states have (on average 4.029850746268656) internal successors, (270), 67 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:14,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:09:14,390 INFO L93 Difference]: Finished difference Result 1103 states and 1170 transitions. [2022-10-15 18:09:14,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-10-15 18:09:14,393 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.029850746268656) internal successors, (270), 67 states have internal predecessors, (270), 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 134 [2022-10-15 18:09:14,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:09:14,399 INFO L225 Difference]: With dead ends: 1103 [2022-10-15 18:09:14,399 INFO L226 Difference]: Without dead ends: 1103 [2022-10-15 18:09:14,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5179 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9713, Invalid=15727, Unknown=0, NotChecked=0, Total=25440 [2022-10-15 18:09:14,412 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 2661 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-15 18:09:14,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 443 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-15 18:09:14,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-10-15 18:09:14,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 591. [2022-10-15 18:09:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 586 states have (on average 1.1194539249146758) internal successors, (656), 590 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 656 transitions. [2022-10-15 18:09:14,433 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 656 transitions. Word has length 134 [2022-10-15 18:09:14,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:09:14,434 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 656 transitions. [2022-10-15 18:09:14,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.029850746268656) internal successors, (270), 67 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 656 transitions. [2022-10-15 18:09:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-10-15 18:09:14,439 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:09:14,439 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:09:14,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 18:09:14,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:09:14,654 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:09:14,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:09:14,655 INFO L85 PathProgramCache]: Analyzing trace with hash -255916826, now seen corresponding path program 1 times [2022-10-15 18:09:14,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:09:14,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23559076] [2022-10-15 18:09:14,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:09:14,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:09:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:09:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7632 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 18:09:19,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:09:19,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23559076] [2022-10-15 18:09:19,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23559076] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:09:19,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131240027] [2022-10-15 18:09:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:09:19,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:09:19,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:09:19,684 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:09:19,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 18:09:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:09:19,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 65 conjunts are in the unsatisfiable core [2022-10-15 18:09:19,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:09:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7632 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 18:09:23,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:09:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7632 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 18:09:29,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131240027] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:09:29,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:09:29,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 191 [2022-10-15 18:09:29,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014058381] [2022-10-15 18:09:29,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:09:29,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2022-10-15 18:09:29,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:09:29,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2022-10-15 18:09:29,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16254, Invalid=20036, Unknown=0, NotChecked=0, Total=36290 [2022-10-15 18:09:29,851 INFO L87 Difference]: Start difference. First operand 591 states and 656 transitions. Second operand has 191 states, 191 states have (on average 3.9842931937172774) internal successors, (761), 191 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:09:31,104 INFO L93 Difference]: Finished difference Result 859 states and 924 transitions. [2022-10-15 18:09:31,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-10-15 18:09:31,105 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 191 states have (on average 3.9842931937172774) internal successors, (761), 191 states have internal predecessors, (761), 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 264 [2022-10-15 18:09:31,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:09:31,110 INFO L225 Difference]: With dead ends: 859 [2022-10-15 18:09:31,110 INFO L226 Difference]: Without dead ends: 859 [2022-10-15 18:09:31,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15685 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=16254, Invalid=20036, Unknown=0, NotChecked=0, Total=36290 [2022-10-15 18:09:31,115 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 400 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 18:09:31,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 288 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 18:09:31,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-10-15 18:09:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 847. [2022-10-15 18:09:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 842 states have (on average 1.0831353919239906) internal successors, (912), 846 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 912 transitions. [2022-10-15 18:09:31,134 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 912 transitions. Word has length 264 [2022-10-15 18:09:31,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:09:31,135 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 912 transitions. [2022-10-15 18:09:31,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 191 states have (on average 3.9842931937172774) internal successors, (761), 191 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:09:31,136 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 912 transitions. [2022-10-15 18:09:31,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-10-15 18:09:31,146 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:09:31,147 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 126, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:09:31,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 18:09:31,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-15 18:09:31,362 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 18:09:31,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:09:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1556739494, now seen corresponding path program 2 times [2022-10-15 18:09:31,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:09:31,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172046490] [2022-10-15 18:09:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:09:31,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:09:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat