/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/termination-15/array13_alloca.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 04:29:18,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 04:29:18,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 04:29:18,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 04:29:18,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 04:29:18,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 04:29:18,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 04:29:18,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 04:29:18,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 04:29:18,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 04:29:18,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 04:29:18,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 04:29:18,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 04:29:18,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 04:29:18,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 04:29:18,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 04:29:18,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 04:29:18,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 04:29:18,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 04:29:18,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 04:29:18,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 04:29:18,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 04:29:18,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 04:29:18,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 04:29:18,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 04:29:18,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 04:29:18,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 04:29:18,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 04:29:18,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 04:29:18,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 04:29:18,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 04:29:18,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 04:29:18,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 04:29:18,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 04:29:18,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 04:29:18,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 04:29:18,650 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 [2022-10-16 04:29:18,708 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 04:29:18,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 04:29:18,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 04:29:18,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 04:29:18,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 04:29:18,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 04:29:18,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 04:29:18,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 04:29:18,715 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 04:29:18,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 04:29:18,716 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 04:29:18,717 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 04:29:18,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 04:29:18,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 04:29:18,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 04:29:18,717 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 04:29:18,718 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 04:29:18,718 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 04:29:18,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 04:29:18,718 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 04:29:18,718 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 04:29:18,719 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 04:29:18,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 04:29:18,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 04:29:18,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 04:29:18,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 04:29:18,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 04:29:18,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 04:29:18,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 04:29:18,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 04:29:18,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 04:29:19,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 04:29:19,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 04:29:19,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 04:29:19,192 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 04:29:19,194 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 04:29:19,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array13_alloca.i [2022-10-16 04:29:19,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c788a18/1935803de48e4ab5b7df119c2fe38c3e/FLAGe961e8869 [2022-10-16 04:29:20,057 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 04:29:20,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array13_alloca.i [2022-10-16 04:29:20,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c788a18/1935803de48e4ab5b7df119c2fe38c3e/FLAGe961e8869 [2022-10-16 04:29:20,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c788a18/1935803de48e4ab5b7df119c2fe38c3e [2022-10-16 04:29:20,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 04:29:20,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 04:29:20,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 04:29:20,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 04:29:20,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 04:29:20,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 04:29:20" (1/1) ... [2022-10-16 04:29:20,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2ed5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:20, skipping insertion in model container [2022-10-16 04:29:20,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 04:29:20" (1/1) ... [2022-10-16 04:29:20,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 04:29:20,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 04:29:20,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 04:29:20,944 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 04:29:21,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 04:29:21,084 INFO L208 MainTranslator]: Completed translation [2022-10-16 04:29:21,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21 WrapperNode [2022-10-16 04:29:21,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 04:29:21,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 04:29:21,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 04:29:21,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 04:29:21,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21" (1/1) ... [2022-10-16 04:29:21,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21" (1/1) ... [2022-10-16 04:29:21,163 INFO L138 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-10-16 04:29:21,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 04:29:21,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 04:29:21,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 04:29:21,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 04:29:21,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21" (1/1) ... [2022-10-16 04:29:21,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21" (1/1) ... [2022-10-16 04:29:21,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21" (1/1) ... [2022-10-16 04:29:21,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21" (1/1) ... [2022-10-16 04:29:21,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21" (1/1) ... [2022-10-16 04:29:21,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21" (1/1) ... [2022-10-16 04:29:21,220 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21" (1/1) ... [2022-10-16 04:29:21,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21" (1/1) ... [2022-10-16 04:29:21,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 04:29:21,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 04:29:21,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 04:29:21,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 04:29:21,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21" (1/1) ... [2022-10-16 04:29:21,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 04:29:21,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 04:29:21,269 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) [2022-10-16 04:29:21,291 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 [2022-10-16 04:29:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 04:29:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 04:29:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 04:29:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 04:29:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 04:29:21,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 04:29:21,426 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 04:29:21,428 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 04:29:21,725 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 04:29:21,747 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 04:29:21,748 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 04:29:21,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 04:29:21 BoogieIcfgContainer [2022-10-16 04:29:21,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 04:29:21,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 04:29:21,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 04:29:21,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 04:29:21,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 04:29:20" (1/3) ... [2022-10-16 04:29:21,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d858bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 04:29:21, skipping insertion in model container [2022-10-16 04:29:21,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:29:21" (2/3) ... [2022-10-16 04:29:21,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d858bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 04:29:21, skipping insertion in model container [2022-10-16 04:29:21,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 04:29:21" (3/3) ... [2022-10-16 04:29:21,770 INFO L112 eAbstractionObserver]: Analyzing ICFG array13_alloca.i [2022-10-16 04:29:21,791 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 04:29:21,791 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-10-16 04:29:21,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 04:29:21,872 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;@4a9c73fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 04:29:21,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-10-16 04:29:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 04:29:21,885 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 04:29:21,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 04:29:21,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-16 04:29:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 04:29:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash 889508766, now seen corresponding path program 1 times [2022-10-16 04:29:21,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 04:29:21,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138675986] [2022-10-16 04:29:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:21,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 04:29:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:22,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 04:29:22,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138675986] [2022-10-16 04:29:22,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138675986] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 04:29:22,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 04:29:22,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 04:29:22,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681995261] [2022-10-16 04:29:22,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 04:29:22,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 04:29:22,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 04:29:22,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 04:29:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 04:29:22,288 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) 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) [2022-10-16 04:29:22,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 04:29:22,344 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-10-16 04:29:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 04:29:22,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 [2022-10-16 04:29:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 04:29:22,357 INFO L225 Difference]: With dead ends: 29 [2022-10-16 04:29:22,358 INFO L226 Difference]: Without dead ends: 27 [2022-10-16 04:29:22,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 04:29:22,365 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 24 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 04:29:22,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 25 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 04:29:22,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-10-16 04:29:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-10-16 04:29:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 26 states have internal predecessors, (31), 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) [2022-10-16 04:29:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-10-16 04:29:22,409 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 6 [2022-10-16 04:29:22,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 04:29:22,410 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-10-16 04:29:22,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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) [2022-10-16 04:29:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-10-16 04:29:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 04:29:22,412 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 04:29:22,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 04:29:22,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 04:29:22,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-16 04:29:22,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 04:29:22,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1804968521, now seen corresponding path program 1 times [2022-10-16 04:29:22,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 04:29:22,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199436957] [2022-10-16 04:29:22,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:22,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 04:29:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:22,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 04:29:22,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199436957] [2022-10-16 04:29:22,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199436957] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 04:29:22,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 04:29:22,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 04:29:22,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464043151] [2022-10-16 04:29:22,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 04:29:22,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 04:29:22,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 04:29:22,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 04:29:22,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 04:29:22,525 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:22,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 04:29:22,557 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2022-10-16 04:29:22,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 04:29:22,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-16 04:29:22,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 04:29:22,559 INFO L225 Difference]: With dead ends: 23 [2022-10-16 04:29:22,559 INFO L226 Difference]: Without dead ends: 23 [2022-10-16 04:29:22,560 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 [2022-10-16 04:29:22,562 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 04:29:22,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 19 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 04:29:22,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-16 04:29:22,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-16 04:29:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.5) internal successors, (27), 22 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) [2022-10-16 04:29:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-10-16 04:29:22,569 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 7 [2022-10-16 04:29:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 04:29:22,569 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-10-16 04:29:22,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-10-16 04:29:22,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 04:29:22,571 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 04:29:22,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 04:29:22,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 04:29:22,572 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-16 04:29:22,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 04:29:22,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1804968522, now seen corresponding path program 1 times [2022-10-16 04:29:22,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 04:29:22,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910510796] [2022-10-16 04:29:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:22,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 04:29:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:22,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 04:29:22,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910510796] [2022-10-16 04:29:22,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910510796] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 04:29:22,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 04:29:22,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 04:29:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645117008] [2022-10-16 04:29:22,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 04:29:22,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 04:29:22,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 04:29:22,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 04:29:22,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-16 04:29:22,851 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:22,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 04:29:22,929 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-10-16 04:29:22,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 04:29:22,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-16 04:29:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 04:29:22,931 INFO L225 Difference]: With dead ends: 30 [2022-10-16 04:29:22,931 INFO L226 Difference]: Without dead ends: 30 [2022-10-16 04:29:22,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-16 04:29:22,934 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 43 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 04:29:22,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 25 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 04:29:22,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-10-16 04:29:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-10-16 04:29:22,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:22,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-10-16 04:29:22,942 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 7 [2022-10-16 04:29:22,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 04:29:22,942 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-10-16 04:29:22,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-10-16 04:29:22,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 04:29:22,944 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 04:29:22,944 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 04:29:22,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 04:29:22,945 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-16 04:29:22,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 04:29:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1744874990, now seen corresponding path program 1 times [2022-10-16 04:29:22,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 04:29:22,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667341980] [2022-10-16 04:29:22,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:22,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 04:29:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:23,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 04:29:23,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667341980] [2022-10-16 04:29:23,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667341980] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 04:29:23,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388978044] [2022-10-16 04:29:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:23,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 04:29:23,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 04:29:23,118 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) [2022-10-16 04:29:23,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 04:29:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:23,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 04:29:23,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 04:29:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:23,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 04:29:23,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388978044] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 04:29:23,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 04:29:23,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 04:29:23,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183083027] [2022-10-16 04:29:23,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 04:29:23,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 04:29:23,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 04:29:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 04:29:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-16 04:29:23,302 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:23,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 04:29:23,354 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2022-10-16 04:29:23,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 04:29:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-16 04:29:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 04:29:23,358 INFO L225 Difference]: With dead ends: 47 [2022-10-16 04:29:23,358 INFO L226 Difference]: Without dead ends: 47 [2022-10-16 04:29:23,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-16 04:29:23,360 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 04:29:23,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 04:29:23,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-16 04:29:23,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2022-10-16 04:29:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 38 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-10-16 04:29:23,369 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 13 [2022-10-16 04:29:23,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 04:29:23,369 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-10-16 04:29:23,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:23,370 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-10-16 04:29:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 04:29:23,371 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 04:29:23,371 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 04:29:23,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 04:29:23,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 04:29:23,587 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-16 04:29:23,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 04:29:23,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1849027728, now seen corresponding path program 1 times [2022-10-16 04:29:23,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 04:29:23,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937264357] [2022-10-16 04:29:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:23,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 04:29:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:23,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 04:29:23,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937264357] [2022-10-16 04:29:23,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937264357] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 04:29:23,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090403298] [2022-10-16 04:29:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:23,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 04:29:23,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 04:29:23,801 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) [2022-10-16 04:29:23,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 04:29:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:23,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 04:29:23,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 04:29:23,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 04:29:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:24,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 04:29:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:24,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090403298] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 04:29:24,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 04:29:24,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-16 04:29:24,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244076256] [2022-10-16 04:29:24,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 04:29:24,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 04:29:24,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 04:29:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 04:29:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-10-16 04:29:24,288 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 11 states, 10 states have (on average 3.0) 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) [2022-10-16 04:29:24,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 04:29:24,402 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-10-16 04:29:24,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 04:29:24,410 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) 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 13 [2022-10-16 04:29:24,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 04:29:24,413 INFO L225 Difference]: With dead ends: 37 [2022-10-16 04:29:24,414 INFO L226 Difference]: Without dead ends: 37 [2022-10-16 04:29:24,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-10-16 04:29:24,418 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 61 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 04:29:24,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 42 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 04:29:24,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-10-16 04:29:24,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2022-10-16 04:29:24,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-10-16 04:29:24,431 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 13 [2022-10-16 04:29:24,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 04:29:24,433 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-10-16 04:29:24,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) 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) [2022-10-16 04:29:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-10-16 04:29:24,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 04:29:24,434 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 04:29:24,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 04:29:24,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 04:29:24,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 04:29:24,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-16 04:29:24,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 04:29:24,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1787579333, now seen corresponding path program 1 times [2022-10-16 04:29:24,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 04:29:24,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711111269] [2022-10-16 04:29:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:24,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 04:29:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:24,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 04:29:24,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711111269] [2022-10-16 04:29:24,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711111269] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 04:29:24,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324096488] [2022-10-16 04:29:24,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:24,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 04:29:24,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 04:29:24,770 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) [2022-10-16 04:29:24,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 04:29:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:24,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 04:29:24,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 04:29:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:24,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 04:29:25,000 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 23 treesize of output 19 [2022-10-16 04:29:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:25,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324096488] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 04:29:25,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 04:29:25,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-10-16 04:29:25,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808563965] [2022-10-16 04:29:25,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 04:29:25,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 04:29:25,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 04:29:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 04:29:25,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-10-16 04:29:25,029 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 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) [2022-10-16 04:29:25,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 04:29:25,186 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-10-16 04:29:25,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 04:29:25,186 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 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 15 [2022-10-16 04:29:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 04:29:25,187 INFO L225 Difference]: With dead ends: 43 [2022-10-16 04:29:25,187 INFO L226 Difference]: Without dead ends: 43 [2022-10-16 04:29:25,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-10-16 04:29:25,189 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 65 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 04:29:25,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 59 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 04:29:25,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-16 04:29:25,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2022-10-16 04:29:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-10-16 04:29:25,196 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 15 [2022-10-16 04:29:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 04:29:25,196 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-10-16 04:29:25,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 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) [2022-10-16 04:29:25,197 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-10-16 04:29:25,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 04:29:25,197 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 04:29:25,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 04:29:25,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 04:29:25,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 04:29:25,412 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-16 04:29:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 04:29:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash -419617070, now seen corresponding path program 1 times [2022-10-16 04:29:25,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 04:29:25,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112962036] [2022-10-16 04:29:25,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:25,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 04:29:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 04:29:25,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 04:29:25,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112962036] [2022-10-16 04:29:25,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112962036] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 04:29:25,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 04:29:25,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 04:29:25,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672601317] [2022-10-16 04:29:25,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 04:29:25,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 04:29:25,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 04:29:25,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 04:29:25,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 04:29:25,488 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-10-16 04:29:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 04:29:25,510 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-10-16 04:29:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 04:29:25,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-16 04:29:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 04:29:25,512 INFO L225 Difference]: With dead ends: 34 [2022-10-16 04:29:25,512 INFO L226 Difference]: Without dead ends: 34 [2022-10-16 04:29:25,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 04:29:25,513 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 04:29:25,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 28 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 04:29:25,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-10-16 04:29:25,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-10-16 04:29:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 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) [2022-10-16 04:29:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-10-16 04:29:25,518 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 16 [2022-10-16 04:29:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 04:29:25,519 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-10-16 04:29:25,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-10-16 04:29:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-10-16 04:29:25,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-16 04:29:25,520 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 04:29:25,520 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 04:29:25,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 04:29:25,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-16 04:29:25,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 04:29:25,521 INFO L85 PathProgramCache]: Analyzing trace with hash 476404122, now seen corresponding path program 1 times [2022-10-16 04:29:25,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 04:29:25,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912642404] [2022-10-16 04:29:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:25,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 04:29:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 04:29:25,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 04:29:25,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912642404] [2022-10-16 04:29:25,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912642404] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 04:29:25,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021615432] [2022-10-16 04:29:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:25,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 04:29:25,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 04:29:25,594 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) [2022-10-16 04:29:25,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 04:29:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:25,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 04:29:25,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 04:29:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 04:29:25,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 04:29:25,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021615432] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 04:29:25,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 04:29:25,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-10-16 04:29:25,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753234502] [2022-10-16 04:29:25,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 04:29:25,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 04:29:25,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 04:29:25,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 04:29:25,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 04:29:25,669 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 04:29:25,685 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-10-16 04:29:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 04:29:25,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-16 04:29:25,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 04:29:25,686 INFO L225 Difference]: With dead ends: 38 [2022-10-16 04:29:25,687 INFO L226 Difference]: Without dead ends: 38 [2022-10-16 04:29:25,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 04:29:25,688 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 04:29:25,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 04:29:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-16 04:29:25,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2022-10-16 04:29:25,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-10-16 04:29:25,693 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 18 [2022-10-16 04:29:25,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 04:29:25,693 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-10-16 04:29:25,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:25,694 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-10-16 04:29:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-16 04:29:25,695 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 04:29:25,695 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 04:29:25,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 04:29:25,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 04:29:25,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-16 04:29:25,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 04:29:25,910 INFO L85 PathProgramCache]: Analyzing trace with hash 476406044, now seen corresponding path program 1 times [2022-10-16 04:29:25,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 04:29:25,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844084108] [2022-10-16 04:29:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:25,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 04:29:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 04:29:26,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 04:29:26,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844084108] [2022-10-16 04:29:26,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844084108] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 04:29:26,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54009131] [2022-10-16 04:29:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:26,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 04:29:26,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 04:29:26,019 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) [2022-10-16 04:29:26,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 04:29:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:26,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 04:29:26,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 04:29:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 04:29:26,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 04:29:26,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54009131] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 04:29:26,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 04:29:26,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2022-10-16 04:29:26,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622451724] [2022-10-16 04:29:26,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 04:29:26,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 04:29:26,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 04:29:26,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 04:29:26,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 04:29:26,130 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 04:29:26,159 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2022-10-16 04:29:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 04:29:26,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-16 04:29:26,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 04:29:26,160 INFO L225 Difference]: With dead ends: 47 [2022-10-16 04:29:26,160 INFO L226 Difference]: Without dead ends: 47 [2022-10-16 04:29:26,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 04:29:26,161 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 04:29:26,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 45 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 04:29:26,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-16 04:29:26,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2022-10-16 04:29:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 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) [2022-10-16 04:29:26,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2022-10-16 04:29:26,166 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 18 [2022-10-16 04:29:26,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 04:29:26,167 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2022-10-16 04:29:26,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-10-16 04:29:26,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-16 04:29:26,168 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 04:29:26,168 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 04:29:26,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 04:29:26,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 04:29:26,383 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-16 04:29:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 04:29:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash -544662310, now seen corresponding path program 1 times [2022-10-16 04:29:26,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 04:29:26,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022041625] [2022-10-16 04:29:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:26,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 04:29:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 04:29:26,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 04:29:26,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022041625] [2022-10-16 04:29:26,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022041625] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 04:29:26,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823898457] [2022-10-16 04:29:26,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:26,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 04:29:26,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 04:29:26,485 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 04:29:26,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 04:29:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:26,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 04:29:26,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 04:29:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:26,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 04:29:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 04:29:26,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823898457] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 04:29:26,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 04:29:26,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 11 [2022-10-16 04:29:26,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196372478] [2022-10-16 04:29:26,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 04:29:26,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 04:29:26,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 04:29:26,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 04:29:26,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-10-16 04:29:26,684 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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) [2022-10-16 04:29:26,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 04:29:26,924 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2022-10-16 04:29:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 04:29:26,925 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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 18 [2022-10-16 04:29:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 04:29:26,926 INFO L225 Difference]: With dead ends: 64 [2022-10-16 04:29:26,926 INFO L226 Difference]: Without dead ends: 64 [2022-10-16 04:29:26,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-10-16 04:29:26,928 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 04:29:26,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 67 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 04:29:26,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-16 04:29:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 45. [2022-10-16 04:29:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2022-10-16 04:29:26,933 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 18 [2022-10-16 04:29:26,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 04:29:26,934 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2022-10-16 04:29:26,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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) [2022-10-16 04:29:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2022-10-16 04:29:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-16 04:29:26,935 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 04:29:26,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 04:29:26,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 04:29:27,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 04:29:27,149 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-16 04:29:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 04:29:27,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1883624349, now seen corresponding path program 1 times [2022-10-16 04:29:27,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 04:29:27,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687627163] [2022-10-16 04:29:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 04:29:27,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 04:29:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 04:29:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 04:29:27,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 04:29:27,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687627163] [2022-10-16 04:29:27,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687627163] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 04:29:27,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 04:29:27,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 04:29:27,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546416800] [2022-10-16 04:29:27,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 04:29:27,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 04:29:27,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 04:29:27,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 04:29:27,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 04:29:27,247 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:27,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 04:29:27,260 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2022-10-16 04:29:27,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 04:29:27,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-10-16 04:29:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 04:29:27,261 INFO L225 Difference]: With dead ends: 44 [2022-10-16 04:29:27,261 INFO L226 Difference]: Without dead ends: 0 [2022-10-16 04:29:27,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 04:29:27,262 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 04:29:27,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 04:29:27,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-16 04:29:27,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-16 04:29:27,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-16 04:29:27,264 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-10-16 04:29:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 04:29:27,264 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-16 04:29:27,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 04:29:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-16 04:29:27,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-16 04:29:27,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2022-10-16 04:29:27,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2022-10-16 04:29:27,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2022-10-16 04:29:27,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2022-10-16 04:29:27,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2022-10-16 04:29:27,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2022-10-16 04:29:27,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2022-10-16 04:29:27,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2022-10-16 04:29:27,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2022-10-16 04:29:27,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-16 04:29:27,274 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 04:29:27,276 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-16 04:29:27,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 04:29:27 BoogieIcfgContainer [2022-10-16 04:29:27,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-16 04:29:27,281 INFO L158 Benchmark]: Toolchain (without parser) took 6949.56ms. Allocated memory was 162.5MB in the beginning and 195.0MB in the end (delta: 32.5MB). Free memory was 134.9MB in the beginning and 73.1MB in the end (delta: 61.8MB). Peak memory consumption was 95.6MB. Max. memory is 8.0GB. [2022-10-16 04:29:27,281 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 162.5MB. Free memory was 132.0MB in the beginning and 131.9MB in the end (delta: 88.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-16 04:29:27,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 745.25ms. Allocated memory is still 162.5MB. Free memory was 134.6MB in the beginning and 117.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-10-16 04:29:27,282 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.90ms. Allocated memory is still 162.5MB. Free memory was 117.7MB in the beginning and 116.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 04:29:27,282 INFO L158 Benchmark]: Boogie Preprocessor took 64.09ms. Allocated memory is still 162.5MB. Free memory was 115.9MB in the beginning and 114.7MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 04:29:27,282 INFO L158 Benchmark]: RCFGBuilder took 525.27ms. Allocated memory is still 162.5MB. Free memory was 114.6MB in the beginning and 139.3MB in the end (delta: -24.7MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. [2022-10-16 04:29:27,283 INFO L158 Benchmark]: TraceAbstraction took 5522.13ms. Allocated memory was 162.5MB in the beginning and 195.0MB in the end (delta: 32.5MB). Free memory was 138.8MB in the beginning and 73.1MB in the end (delta: 65.7MB). Peak memory consumption was 98.2MB. Max. memory is 8.0GB. [2022-10-16 04:29:27,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 162.5MB. Free memory was 132.0MB in the beginning and 131.9MB in the end (delta: 88.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 745.25ms. Allocated memory is still 162.5MB. Free memory was 134.6MB in the beginning and 117.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 77.90ms. Allocated memory is still 162.5MB. Free memory was 117.7MB in the beginning and 116.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.09ms. Allocated memory is still 162.5MB. Free memory was 115.9MB in the beginning and 114.7MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 525.27ms. Allocated memory is still 162.5MB. Free memory was 114.6MB in the beginning and 139.3MB in the end (delta: -24.7MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. * TraceAbstraction took 5522.13ms. Allocated memory was 162.5MB in the beginning and 195.0MB in the end (delta: 32.5MB). Free memory was 138.8MB in the beginning and 73.1MB in the end (delta: 65.7MB). Peak memory consumption was 98.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 364]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 345 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 345 mSDsluCounter, 426 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 253 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 462 IncrementalHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 173 mSDtfsCounter, 462 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 56 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 271 ConstructedInterpolants, 0 QuantifiedInterpolants, 1760 SizeOfPredicates, 15 NumberOfNonLiveVariables, 391 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 23/37 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-16 04:29:27,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...