/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-fpi/sina5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:20:44,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:20:44,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:20:44,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:20:44,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:20:44,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:20:44,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:20:44,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:20:44,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:20:44,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:20:44,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:20:44,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:20:44,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:20:44,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:20:44,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:20:44,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:20:44,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:20:44,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:20:44,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:20:44,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:20:44,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:20:44,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:20:44,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:20:44,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:20:44,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 16:20:44,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:20:44,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:20:44,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:20:44,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:20:44,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:20:44,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:20:44,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:20:44,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:20:44,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:20:44,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:20:44,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:20:44,722 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 16:20:44,780 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:20:44,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:20:44,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:20:44,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:20:44,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:20:44,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:20:44,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:20:44,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:20:44,788 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:20:44,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:20:44,790 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:20:44,791 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:20:44,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:20:44,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:20:44,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:20:44,792 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:20:44,792 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:20:44,792 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:20:44,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:20:44,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:20:44,793 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:20:44,793 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:20:44,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:20:44,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:20:44,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:20:44,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:20:44,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:20:44,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:20:44,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:20:44,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:20:44,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:20:45,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:20:45,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:20:45,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:20:45,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:20:45,293 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:20:45,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sina5.c [2022-10-15 16:20:45,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79a39a03a/cc9d93c256404dd6a28fb164a40adc25/FLAG86d0512d8 [2022-10-15 16:20:45,919 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:20:45,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina5.c [2022-10-15 16:20:45,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79a39a03a/cc9d93c256404dd6a28fb164a40adc25/FLAG86d0512d8 [2022-10-15 16:20:46,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79a39a03a/cc9d93c256404dd6a28fb164a40adc25 [2022-10-15 16:20:46,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:20:46,318 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:20:46,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:20:46,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:20:46,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:20:46,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9fe597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46, skipping insertion in model container [2022-10-15 16:20:46,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:20:46,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:20:46,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina5.c[588,601] [2022-10-15 16:20:46,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:20:46,666 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:20:46,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina5.c[588,601] [2022-10-15 16:20:46,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:20:46,710 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:20:46,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46 WrapperNode [2022-10-15 16:20:46,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:20:46,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:20:46,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:20:46,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:20:46,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,760 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 109 [2022-10-15 16:20:46,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:20:46,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:20:46,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:20:46,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:20:46,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,799 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:20:46,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:20:46,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:20:46,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:20:46,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46" (1/1) ... [2022-10-15 16:20:46,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:20:46,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:20:46,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 16:20:46,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 16:20:46,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:20:46,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:20:46,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 16:20:46,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:20:46,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 16:20:46,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:20:46,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:20:46,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:20:46,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 16:20:46,996 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:20:46,999 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:20:47,376 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:20:47,384 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:20:47,409 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-15 16:20:47,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:20:47 BoogieIcfgContainer [2022-10-15 16:20:47,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:20:47,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:20:47,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:20:47,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:20:47,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:20:46" (1/3) ... [2022-10-15 16:20:47,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fe42e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:20:47, skipping insertion in model container [2022-10-15 16:20:47,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:46" (2/3) ... [2022-10-15 16:20:47,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fe42e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:20:47, skipping insertion in model container [2022-10-15 16:20:47,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:20:47" (3/3) ... [2022-10-15 16:20:47,438 INFO L112 eAbstractionObserver]: Analyzing ICFG sina5.c [2022-10-15 16:20:47,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:20:47,502 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-10-15 16:20:47,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:20:47,604 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;@15d67016, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:20:47,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-10-15 16:20:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 46 states have (on average 1.934782608695652) internal successors, (89), 74 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:20:47,627 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:47,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:20:47,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:20:47,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:47,638 INFO L85 PathProgramCache]: Analyzing trace with hash 925752, now seen corresponding path program 1 times [2022-10-15 16:20:47,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:47,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254899235] [2022-10-15 16:20:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:47,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:47,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:47,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254899235] [2022-10-15 16:20:47,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254899235] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:20:47,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:20:47,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:20:47,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770751519] [2022-10-15 16:20:47,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:20:47,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:20:47,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:48,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:20:48,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:48,019 INFO L87 Difference]: Start difference. First operand has 75 states, 46 states have (on average 1.934782608695652) internal successors, (89), 74 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:48,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:48,131 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2022-10-15 16:20:48,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:20:48,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 16:20:48,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:48,148 INFO L225 Difference]: With dead ends: 76 [2022-10-15 16:20:48,149 INFO L226 Difference]: Without dead ends: 73 [2022-10-15 16:20:48,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:48,160 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 4 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:48,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 124 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:20:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-10-15 16:20:48,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-10-15 16:20:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 72 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-10-15 16:20:48,229 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 4 [2022-10-15 16:20:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:48,229 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-10-15 16:20:48,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:48,231 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-10-15 16:20:48,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:20:48,232 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:48,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:20:48,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:20:48,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:20:48,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:48,237 INFO L85 PathProgramCache]: Analyzing trace with hash 889571242, now seen corresponding path program 1 times [2022-10-15 16:20:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:48,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549574087] [2022-10-15 16:20:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:48,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:48,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:48,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549574087] [2022-10-15 16:20:48,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549574087] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:20:48,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:20:48,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:20:48,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492647524] [2022-10-15 16:20:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:20:48,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:20:48,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:48,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:20:48,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:48,659 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:48,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:48,751 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2022-10-15 16:20:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:20:48,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-10-15 16:20:48,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:48,754 INFO L225 Difference]: With dead ends: 67 [2022-10-15 16:20:48,754 INFO L226 Difference]: Without dead ends: 67 [2022-10-15 16:20:48,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:48,757 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 65 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:48,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 47 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:20:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-10-15 16:20:48,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-10-15 16:20:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.6) internal successors, (72), 66 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:48,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2022-10-15 16:20:48,774 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 6 [2022-10-15 16:20:48,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:48,776 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2022-10-15 16:20:48,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:48,777 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2022-10-15 16:20:48,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:20:48,779 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:48,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:20:48,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:20:48,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:20:48,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:48,780 INFO L85 PathProgramCache]: Analyzing trace with hash 889571243, now seen corresponding path program 1 times [2022-10-15 16:20:48,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:48,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077624856] [2022-10-15 16:20:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:48,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:49,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:49,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077624856] [2022-10-15 16:20:49,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077624856] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:20:49,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:20:49,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:20:49,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445101421] [2022-10-15 16:20:49,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:20:49,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:20:49,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:49,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:20:49,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:49,062 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:49,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:49,124 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-10-15 16:20:49,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:20:49,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-10-15 16:20:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:49,127 INFO L225 Difference]: With dead ends: 61 [2022-10-15 16:20:49,127 INFO L226 Difference]: Without dead ends: 61 [2022-10-15 16:20:49,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:49,129 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 59 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:49,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 48 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:20:49,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-10-15 16:20:49,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-10-15 16:20:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 60 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:49,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2022-10-15 16:20:49,139 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 6 [2022-10-15 16:20:49,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:49,139 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2022-10-15 16:20:49,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2022-10-15 16:20:49,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 16:20:49,140 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:49,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:49,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:20:49,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:20:49,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:49,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1268642443, now seen corresponding path program 1 times [2022-10-15 16:20:49,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:49,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440155093] [2022-10-15 16:20:49,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:49,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:49,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:49,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440155093] [2022-10-15 16:20:49,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440155093] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:20:49,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:20:49,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:20:49,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128523356] [2022-10-15 16:20:49,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:20:49,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:20:49,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:20:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:49,292 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:49,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:49,342 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2022-10-15 16:20:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:20:49,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 16:20:49,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:49,345 INFO L225 Difference]: With dead ends: 56 [2022-10-15 16:20:49,346 INFO L226 Difference]: Without dead ends: 56 [2022-10-15 16:20:49,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:49,353 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 51 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:49,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 42 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:20:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-15 16:20:49,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-10-15 16:20:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 55 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 16:20:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-10-15 16:20:49,369 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 9 [2022-10-15 16:20:49,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:49,375 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-10-15 16:20:49,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-10-15 16:20:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 16:20:49,376 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:49,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:49,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 16:20:49,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:20:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:49,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1268642444, now seen corresponding path program 1 times [2022-10-15 16:20:49,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:49,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571057050] [2022-10-15 16:20:49,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:49,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:49,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:49,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571057050] [2022-10-15 16:20:49,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571057050] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:20:49,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:20:49,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:20:49,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601629767] [2022-10-15 16:20:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:20:49,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:20:49,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:49,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:20:49,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:20:49,707 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:49,907 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2022-10-15 16:20:49,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:20:49,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 16:20:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:49,909 INFO L225 Difference]: With dead ends: 92 [2022-10-15 16:20:49,909 INFO L226 Difference]: Without dead ends: 92 [2022-10-15 16:20:49,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:20:49,911 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 201 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:49,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 34 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:20:49,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-10-15 16:20:49,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 69. [2022-10-15 16:20:49,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 68 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2022-10-15 16:20:49,921 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 9 [2022-10-15 16:20:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:49,922 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2022-10-15 16:20:49,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2022-10-15 16:20:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 16:20:49,923 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:49,923 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:49,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 16:20:49,924 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:20:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1585184552, now seen corresponding path program 1 times [2022-10-15 16:20:49,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:49,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983839939] [2022-10-15 16:20:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:49,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:50,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:50,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983839939] [2022-10-15 16:20:50,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983839939] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:20:50,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278601645] [2022-10-15 16:20:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:50,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:20:50,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:20:50,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:20:50,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 16:20:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:50,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:20:50,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:20:50,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:20:50,368 INFO L356 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-10-15 16:20:50,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2022-10-15 16:20:50,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2022-10-15 16:20:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:50,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:20:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:50,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278601645] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:20:50,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:20:50,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-10-15 16:20:50,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052468973] [2022-10-15 16:20:50,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:20:50,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 16:20:50,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:50,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 16:20:50,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:20:50,765 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:51,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:51,059 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2022-10-15 16:20:51,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:20:51,060 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 16:20:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:51,061 INFO L225 Difference]: With dead ends: 87 [2022-10-15 16:20:51,062 INFO L226 Difference]: Without dead ends: 87 [2022-10-15 16:20:51,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-10-15 16:20:51,063 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 211 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:51,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 77 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:20:51,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-10-15 16:20:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 57. [2022-10-15 16:20:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 56 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2022-10-15 16:20:51,072 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 12 [2022-10-15 16:20:51,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:51,073 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2022-10-15 16:20:51,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:51,073 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2022-10-15 16:20:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:20:51,074 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:51,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:51,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 16:20:51,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-15 16:20:51,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:20:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:51,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1350983170, now seen corresponding path program 1 times [2022-10-15 16:20:51,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:51,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967270221] [2022-10-15 16:20:51,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:51,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:20:51,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:51,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967270221] [2022-10-15 16:20:51,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967270221] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:20:51,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:20:51,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:20:51,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905476841] [2022-10-15 16:20:51,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:20:51,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:20:51,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:51,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:20:51,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:51,379 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:51,403 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2022-10-15 16:20:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:20:51,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 16:20:51,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:51,405 INFO L225 Difference]: With dead ends: 55 [2022-10-15 16:20:51,405 INFO L226 Difference]: Without dead ends: 55 [2022-10-15 16:20:51,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:51,407 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 39 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:51,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 40 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:20:51,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-15 16:20:51,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-10-15 16:20:51,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 54 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2022-10-15 16:20:51,413 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 14 [2022-10-15 16:20:51,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:51,413 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2022-10-15 16:20:51,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2022-10-15 16:20:51,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:20:51,415 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:51,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:51,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 16:20:51,415 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:20:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:51,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1350983171, now seen corresponding path program 1 times [2022-10-15 16:20:51,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:51,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768903787] [2022-10-15 16:20:51,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:51,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:20:51,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:51,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768903787] [2022-10-15 16:20:51,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768903787] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:20:51,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:20:51,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:20:51,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56882781] [2022-10-15 16:20:51,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:20:51,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:20:51,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:51,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:20:51,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:20:51,522 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:51,636 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2022-10-15 16:20:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:20:51,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 16:20:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:51,643 INFO L225 Difference]: With dead ends: 81 [2022-10-15 16:20:51,643 INFO L226 Difference]: Without dead ends: 81 [2022-10-15 16:20:51,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:20:51,644 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 168 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:51,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 30 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:20:51,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-10-15 16:20:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 58. [2022-10-15 16:20:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 57 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:51,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2022-10-15 16:20:51,650 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 14 [2022-10-15 16:20:51,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:51,651 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2022-10-15 16:20:51,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2022-10-15 16:20:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-15 16:20:51,652 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:51,652 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:51,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 16:20:51,653 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:20:51,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:51,653 INFO L85 PathProgramCache]: Analyzing trace with hash -998895630, now seen corresponding path program 1 times [2022-10-15 16:20:51,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:51,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597352849] [2022-10-15 16:20:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:51,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:51,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:51,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597352849] [2022-10-15 16:20:51,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597352849] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:20:51,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488200120] [2022-10-15 16:20:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:51,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:20:51,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:20:51,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:20:51,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 16:20:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:51,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 16:20:51,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:20:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:51,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:20:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:51,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488200120] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:20:51,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:20:51,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-10-15 16:20:51,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481996720] [2022-10-15 16:20:51,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:20:51,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 16:20:51,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:51,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 16:20:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:20:51,926 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:52,139 INFO L93 Difference]: Finished difference Result 164 states and 173 transitions. [2022-10-15 16:20:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 16:20:52,140 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-10-15 16:20:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:52,143 INFO L225 Difference]: With dead ends: 164 [2022-10-15 16:20:52,143 INFO L226 Difference]: Without dead ends: 164 [2022-10-15 16:20:52,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:20:52,146 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 267 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:52,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 112 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:20:52,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-10-15 16:20:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 116. [2022-10-15 16:20:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.1339285714285714) internal successors, (127), 115 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2022-10-15 16:20:52,177 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 17 [2022-10-15 16:20:52,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:52,177 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2022-10-15 16:20:52,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:52,178 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2022-10-15 16:20:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 16:20:52,178 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:52,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:52,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 16:20:52,395 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,SelfDestructingSolverStorable8 [2022-10-15 16:20:52,396 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:20:52,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:52,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1765862850, now seen corresponding path program 2 times [2022-10-15 16:20:52,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:52,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758658575] [2022-10-15 16:20:52,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:52,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:52,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:52,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758658575] [2022-10-15 16:20:52,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758658575] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:20:52,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254690984] [2022-10-15 16:20:52,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:20:52,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:20:52,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:20:52,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:20:52,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 16:20:52,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:20:52,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:20:52,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:20:52,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:20:52,695 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-10-15 16:20:52,695 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-10-15 16:20:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:20:52,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:20:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:20:53,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254690984] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:20:53,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:20:53,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-10-15 16:20:53,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563972696] [2022-10-15 16:20:53,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:20:53,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 16:20:53,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:53,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 16:20:53,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:20:53,077 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:53,504 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2022-10-15 16:20:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 16:20:53,505 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-15 16:20:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:53,507 INFO L225 Difference]: With dead ends: 162 [2022-10-15 16:20:53,507 INFO L226 Difference]: Without dead ends: 162 [2022-10-15 16:20:53,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-10-15 16:20:53,508 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 318 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:53,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 130 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 16:20:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-10-15 16:20:53,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 114. [2022-10-15 16:20:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1160714285714286) internal successors, (125), 113 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2022-10-15 16:20:53,516 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 20 [2022-10-15 16:20:53,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:53,516 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2022-10-15 16:20:53,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:53,517 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2022-10-15 16:20:53,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 16:20:53,519 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:53,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:53,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:20:53,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:20:53,734 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:20:53,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:53,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2145735879, now seen corresponding path program 1 times [2022-10-15 16:20:53,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:53,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593196114] [2022-10-15 16:20:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:53,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:57,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:57,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593196114] [2022-10-15 16:20:57,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593196114] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:20:57,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676467826] [2022-10-15 16:20:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:57,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:20:57,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:20:57,921 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 16:20:57,945 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 16:20:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:58,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 70 conjunts are in the unsatisfiable core [2022-10-15 16:20:58,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:20:58,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:20:58,105 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-15 16:20:58,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2022-10-15 16:20:58,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-15 16:20:58,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-10-15 16:20:58,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:20:58,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-10-15 16:20:59,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:20:59,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2022-10-15 16:21:00,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:21:00,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2022-10-15 16:21:00,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:21:00,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2022-10-15 16:21:01,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:21:01,085 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-15 16:21:01,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2022-10-15 16:21:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:01,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:21:04,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-15 16:21:04,462 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-15 16:21:04,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2022-10-15 16:21:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:04,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676467826] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:21:04,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:21:04,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 70 [2022-10-15 16:21:04,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371198841] [2022-10-15 16:21:04,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:21:04,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-10-15 16:21:04,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:04,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-10-15 16:21:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=484, Invalid=4346, Unknown=0, NotChecked=0, Total=4830 [2022-10-15 16:21:04,487 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand has 70 states, 70 states have (on average 1.8142857142857143) internal successors, (127), 70 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:07,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:07,280 INFO L93 Difference]: Finished difference Result 151 states and 161 transitions. [2022-10-15 16:21:07,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 16:21:07,285 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.8142857142857143) internal successors, (127), 70 states have internal predecessors, (127), 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 46 [2022-10-15 16:21:07,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:07,292 INFO L225 Difference]: With dead ends: 151 [2022-10-15 16:21:07,293 INFO L226 Difference]: Without dead ends: 151 [2022-10-15 16:21:07,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 46 SyntacticMatches, 9 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2596 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=768, Invalid=6204, Unknown=0, NotChecked=0, Total=6972 [2022-10-15 16:21:07,300 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 196 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:07,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 375 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 980 Invalid, 0 Unknown, 43 Unchecked, 1.2s Time] [2022-10-15 16:21:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-10-15 16:21:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2022-10-15 16:21:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 141 states have (on average 1.0921985815602837) internal successors, (154), 142 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 154 transitions. [2022-10-15 16:21:07,322 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 154 transitions. Word has length 46 [2022-10-15 16:21:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:07,322 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 154 transitions. [2022-10-15 16:21:07,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.8142857142857143) internal successors, (127), 70 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:07,325 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 154 transitions. [2022-10-15 16:21:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-15 16:21:07,328 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:07,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:07,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 16:21:07,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:07,545 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:21:07,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:07,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1792443899, now seen corresponding path program 2 times [2022-10-15 16:21:07,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:07,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148099959] [2022-10-15 16:21:07,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:07,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 16:21:07,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:07,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148099959] [2022-10-15 16:21:07,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148099959] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:21:07,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598033296] [2022-10-15 16:21:07,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:21:07,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:07,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:21:07,686 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 16:21:07,704 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 16:21:07,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:21:07,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:21:07,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 16:21:07,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:21:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 16:21:07,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:21:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 16:21:07,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598033296] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:21:07,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:21:07,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-10-15 16:21:07,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569582413] [2022-10-15 16:21:07,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:21:07,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 16:21:07,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:07,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 16:21:07,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:21:07,867 INFO L87 Difference]: Start difference. First operand 143 states and 154 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:08,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:08,155 INFO L93 Difference]: Finished difference Result 149 states and 154 transitions. [2022-10-15 16:21:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 16:21:08,155 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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 49 [2022-10-15 16:21:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:08,156 INFO L225 Difference]: With dead ends: 149 [2022-10-15 16:21:08,156 INFO L226 Difference]: Without dead ends: 149 [2022-10-15 16:21:08,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-10-15 16:21:08,157 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 299 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:08,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 185 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:21:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-10-15 16:21:08,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 120. [2022-10-15 16:21:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.076271186440678) internal successors, (127), 119 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:08,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 127 transitions. [2022-10-15 16:21:08,163 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 127 transitions. Word has length 49 [2022-10-15 16:21:08,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:08,163 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 127 transitions. [2022-10-15 16:21:08,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:08,163 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 127 transitions. [2022-10-15 16:21:08,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-15 16:21:08,165 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:08,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:08,205 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 16:21:08,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-15 16:21:08,379 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2022-10-15 16:21:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:08,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1188852777, now seen corresponding path program 1 times [2022-10-15 16:21:08,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:08,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134969049] [2022-10-15 16:21:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:08,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:21:08,446 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-15 16:21:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:21:08,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-15 16:21:08,550 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-15 16:21:08,551 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK (27 of 28 remaining) [2022-10-15 16:21:08,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 28 remaining) [2022-10-15 16:21:08,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 28 remaining) [2022-10-15 16:21:08,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 28 remaining) [2022-10-15 16:21:08,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 28 remaining) [2022-10-15 16:21:08,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 28 remaining) [2022-10-15 16:21:08,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 28 remaining) [2022-10-15 16:21:08,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 28 remaining) [2022-10-15 16:21:08,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 28 remaining) [2022-10-15 16:21:08,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 28 remaining) [2022-10-15 16:21:08,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 28 remaining) [2022-10-15 16:21:08,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 28 remaining) [2022-10-15 16:21:08,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 28 remaining) [2022-10-15 16:21:08,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 28 remaining) [2022-10-15 16:21:08,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 28 remaining) [2022-10-15 16:21:08,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 28 remaining) [2022-10-15 16:21:08,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 28 remaining) [2022-10-15 16:21:08,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 28 remaining) [2022-10-15 16:21:08,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 28 remaining) [2022-10-15 16:21:08,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 28 remaining) [2022-10-15 16:21:08,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 28 remaining) [2022-10-15 16:21:08,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 28 remaining) [2022-10-15 16:21:08,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 28 remaining) [2022-10-15 16:21:08,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 28 remaining) [2022-10-15 16:21:08,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 28 remaining) [2022-10-15 16:21:08,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 28 remaining) [2022-10-15 16:21:08,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 28 remaining) [2022-10-15 16:21:08,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (0 of 28 remaining) [2022-10-15 16:21:08,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-15 16:21:08,565 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:08,569 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 16:21:08,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 04:21:08 BoogieIcfgContainer [2022-10-15 16:21:08,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 16:21:08,673 INFO L158 Benchmark]: Toolchain (without parser) took 22359.42ms. Allocated memory was 166.7MB in the beginning and 369.1MB in the end (delta: 202.4MB). Free memory was 141.0MB in the beginning and 314.6MB in the end (delta: -173.6MB). Peak memory consumption was 30.8MB. Max. memory is 8.0GB. [2022-10-15 16:21:08,674 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 166.7MB. Free memory is still 136.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 16:21:08,674 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.91ms. Allocated memory is still 166.7MB. Free memory was 140.9MB in the beginning and 130.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-15 16:21:08,674 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.43ms. Allocated memory is still 166.7MB. Free memory was 130.4MB in the beginning and 128.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 16:21:08,675 INFO L158 Benchmark]: Boogie Preprocessor took 41.96ms. Allocated memory is still 166.7MB. Free memory was 128.5MB in the beginning and 127.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 16:21:08,675 INFO L158 Benchmark]: RCFGBuilder took 607.30ms. Allocated memory is still 166.7MB. Free memory was 127.1MB in the beginning and 147.6MB in the end (delta: -20.5MB). Peak memory consumption was 20.6MB. Max. memory is 8.0GB. [2022-10-15 16:21:08,676 INFO L158 Benchmark]: TraceAbstraction took 21252.97ms. Allocated memory was 166.7MB in the beginning and 369.1MB in the end (delta: 202.4MB). Free memory was 147.1MB in the beginning and 314.6MB in the end (delta: -167.5MB). Peak memory consumption was 35.4MB. Max. memory is 8.0GB. [2022-10-15 16:21:08,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 166.7MB. Free memory is still 136.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 388.91ms. Allocated memory is still 166.7MB. Free memory was 140.9MB in the beginning and 130.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.43ms. Allocated memory is still 166.7MB. Free memory was 130.4MB in the beginning and 128.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.96ms. Allocated memory is still 166.7MB. Free memory was 128.5MB in the beginning and 127.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 607.30ms. Allocated memory is still 166.7MB. Free memory was 127.1MB in the beginning and 147.6MB in the end (delta: -20.5MB). Peak memory consumption was 20.6MB. Max. memory is 8.0GB. * TraceAbstraction took 21252.97ms. Allocated memory was 166.7MB in the beginning and 369.1MB in the end (delta: 202.4MB). Free memory was 147.1MB in the beginning and 314.6MB in the end (delta: -167.5MB). Peak memory consumption was 35.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 21. Possible FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L30] long long *b = malloc(sizeof(long long)*N); [L32] sum[0] = 0 VAL [a={-1:0}, b={4:0}, N=1, sum={6:0}] [L33] i=0 VAL [a={-1:0}, b={4:0}, i=0, N=1, sum={6:0}] [L33] COND TRUE i