/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-crafted/bAnd5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:15:35,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:15:35,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:15:35,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:15:35,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:15:35,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:15:35,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:15:35,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:15:35,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:15:35,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:15:35,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:15:35,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:15:35,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:15:35,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:15:35,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:15:35,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:15:35,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:15:35,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:15:35,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:15:35,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:15:35,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:15:35,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:15:35,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:15:35,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:15:35,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 16:15:35,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:15:35,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:15:35,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:15:35,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 16:15:35,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:15:35,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:15:35,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:15:35,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:15:35,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:15:35,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:15:35,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:15:35,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:15:35,514 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:15:35,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:15:35,514 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:15:35,514 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:15:35,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:15:35,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:15:35,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:15:35,515 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:15:35,515 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:15:35,515 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:15:35,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:15:35,516 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:15:35,516 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:15:35,516 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:15:35,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:15:35,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:15:35,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:15:35,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:15:35,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:15:35,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:15:35,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:15:35,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:15:35,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:15:35,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:15:35,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:15:35,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:15:35,900 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:15:35,901 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:15:35,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bAnd5.i [2022-10-15 16:15:35,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b12fecf7/c31a120039674b4d97f66bd16e19d266/FLAG792a47d50 [2022-10-15 16:15:36,634 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:15:36,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd5.i [2022-10-15 16:15:36,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b12fecf7/c31a120039674b4d97f66bd16e19d266/FLAG792a47d50 [2022-10-15 16:15:36,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b12fecf7/c31a120039674b4d97f66bd16e19d266 [2022-10-15 16:15:36,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:15:36,987 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:15:36,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:15:36,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:15:36,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:15:36,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:15:36" (1/1) ... [2022-10-15 16:15:37,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12112f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:36, skipping insertion in model container [2022-10-15 16:15:37,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:15:36" (1/1) ... [2022-10-15 16:15:37,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:15:37,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:15:37,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd5.i[1369,1382] [2022-10-15 16:15:37,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:15:37,231 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:15:37,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd5.i[1369,1382] [2022-10-15 16:15:37,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:15:37,278 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:15:37,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37 WrapperNode [2022-10-15 16:15:37,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:15:37,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:15:37,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:15:37,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:15:37,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,325 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2022-10-15 16:15:37,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:15:37,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:15:37,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:15:37,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:15:37,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,360 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:15:37,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:15:37,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:15:37,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:15:37,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:15:37,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:37,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 16:15:37,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 16:15:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:15:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:15:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 16:15:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:15:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2022-10-15 16:15:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2022-10-15 16:15:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:15:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:15:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:15:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 16:15:37,582 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:15:37,585 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:15:38,097 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:15:38,119 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:15:38,119 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 16:15:38,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:15:38 BoogieIcfgContainer [2022-10-15 16:15:38,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:15:38,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:15:38,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:15:38,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:15:38,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:15:36" (1/3) ... [2022-10-15 16:15:38,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a88a99f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:15:38, skipping insertion in model container [2022-10-15 16:15:38,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (2/3) ... [2022-10-15 16:15:38,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a88a99f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:15:38, skipping insertion in model container [2022-10-15 16:15:38,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:15:38" (3/3) ... [2022-10-15 16:15:38,133 INFO L112 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2022-10-15 16:15:38,160 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:15:38,160 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-10-15 16:15:38,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:15:38,267 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;@576d3d1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:15:38,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-10-15 16:15:38,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 44 states have (on average 1.8636363636363635) internal successors, (82), 70 states have internal predecessors, (82), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:38,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:15:38,300 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:38,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:15:38,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:38,310 INFO L85 PathProgramCache]: Analyzing trace with hash 74574879, now seen corresponding path program 1 times [2022-10-15 16:15:38,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:38,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027825841] [2022-10-15 16:15:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:38,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:38,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:38,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027825841] [2022-10-15 16:15:38,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027825841] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:38,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:15:38,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:15:38,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434064497] [2022-10-15 16:15:38,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:38,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:15:38,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:38,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:15:38,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:15:38,565 INFO L87 Difference]: Start difference. First operand has 75 states, 44 states have (on average 1.8636363636363635) internal successors, (82), 70 states have internal predecessors, (82), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:38,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:38,658 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2022-10-15 16:15:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:15:38,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 16:15:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:38,671 INFO L225 Difference]: With dead ends: 77 [2022-10-15 16:15:38,672 INFO L226 Difference]: Without dead ends: 73 [2022-10-15 16:15:38,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:15:38,679 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 2 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:38,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 132 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-10-15 16:15:38,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-10-15 16:15:38,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 68 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2022-10-15 16:15:38,730 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 5 [2022-10-15 16:15:38,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:38,731 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2022-10-15 16:15:38,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:38,732 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2022-10-15 16:15:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:15:38,732 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:38,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:15:38,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:15:38,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:38,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:38,734 INFO L85 PathProgramCache]: Analyzing trace with hash 74500597, now seen corresponding path program 1 times [2022-10-15 16:15:38,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:38,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742876346] [2022-10-15 16:15:38,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:38,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:39,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:39,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742876346] [2022-10-15 16:15:39,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742876346] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:39,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:15:39,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:15:39,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451005102] [2022-10-15 16:15:39,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:39,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:15:39,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:39,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:15:39,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:15:39,006 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:39,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:39,158 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2022-10-15 16:15:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:15:39,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 16:15:39,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:39,161 INFO L225 Difference]: With dead ends: 78 [2022-10-15 16:15:39,161 INFO L226 Difference]: Without dead ends: 78 [2022-10-15 16:15:39,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:15:39,164 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:39,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 146 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:39,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-10-15 16:15:39,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2022-10-15 16:15:39,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 45 states have (on average 1.711111111111111) internal successors, (77), 70 states have internal predecessors, (77), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:39,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2022-10-15 16:15:39,177 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 5 [2022-10-15 16:15:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:39,178 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2022-10-15 16:15:39,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2022-10-15 16:15:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:15:39,179 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:39,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:15:39,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:15:39,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 74500596, now seen corresponding path program 1 times [2022-10-15 16:15:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:39,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855193458] [2022-10-15 16:15:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:39,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:39,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:39,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855193458] [2022-10-15 16:15:39,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855193458] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:39,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:15:39,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:15:39,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211666066] [2022-10-15 16:15:39,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:39,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:15:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:39,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:15:39,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:15:39,267 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:39,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:39,346 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2022-10-15 16:15:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:15:39,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 16:15:39,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:39,349 INFO L225 Difference]: With dead ends: 66 [2022-10-15 16:15:39,352 INFO L226 Difference]: Without dead ends: 66 [2022-10-15 16:15:39,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:15:39,355 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 34 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:39,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 71 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-10-15 16:15:39,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-10-15 16:15:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 45 states have (on average 1.488888888888889) internal successors, (67), 61 states have internal predecessors, (67), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2022-10-15 16:15:39,381 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 5 [2022-10-15 16:15:39,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:39,382 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2022-10-15 16:15:39,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2022-10-15 16:15:39,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 16:15:39,385 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:39,386 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:39,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:15:39,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:39,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:39,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1784883128, now seen corresponding path program 1 times [2022-10-15 16:15:39,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:39,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186417490] [2022-10-15 16:15:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:39,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:39,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:39,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186417490] [2022-10-15 16:15:39,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186417490] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:39,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501192838] [2022-10-15 16:15:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:39,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:39,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:39,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:39,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 16:15:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:39,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:15:39,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:39,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:15:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:39,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:40,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501192838] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:40,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:40,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-10-15 16:15:40,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261438007] [2022-10-15 16:15:40,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:40,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 16:15:40,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:40,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 16:15:40,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:15:40,061 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:40,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:40,392 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2022-10-15 16:15:40,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:15:40,394 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 16:15:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:40,397 INFO L225 Difference]: With dead ends: 72 [2022-10-15 16:15:40,397 INFO L226 Difference]: Without dead ends: 72 [2022-10-15 16:15:40,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:15:40,409 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 8 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:40,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 249 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:15:40,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-10-15 16:15:40,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2022-10-15 16:15:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 65 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2022-10-15 16:15:40,431 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 9 [2022-10-15 16:15:40,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:40,431 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2022-10-15 16:15:40,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2022-10-15 16:15:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 16:15:40,436 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:40,436 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2022-10-15 16:15:40,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 16:15:40,637 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 [2022-10-15 16:15:40,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:40,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:40,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1332024325, now seen corresponding path program 2 times [2022-10-15 16:15:40,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:40,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257571491] [2022-10-15 16:15:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:40,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:40,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257571491] [2022-10-15 16:15:40,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257571491] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719884041] [2022-10-15 16:15:40,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:15:40,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:40,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:40,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:40,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 16:15:40,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:15:40,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:15:40,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 16:15:40,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:40,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:15:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:41,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:41,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719884041] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:41,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:41,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-10-15 16:15:41,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189163835] [2022-10-15 16:15:41,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:41,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 16:15:41,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:41,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 16:15:41,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:15:41,307 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 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) [2022-10-15 16:15:41,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:41,532 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-10-15 16:15:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 16:15:41,533 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 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) Word has length 13 [2022-10-15 16:15:41,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:41,534 INFO L225 Difference]: With dead ends: 71 [2022-10-15 16:15:41,534 INFO L226 Difference]: Without dead ends: 71 [2022-10-15 16:15:41,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2022-10-15 16:15:41,536 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 138 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:41,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 151 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:15:41,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-15 16:15:41,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2022-10-15 16:15:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.4375) internal successors, (69), 63 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2022-10-15 16:15:41,543 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 13 [2022-10-15 16:15:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:41,544 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2022-10-15 16:15:41,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 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) [2022-10-15 16:15:41,544 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2022-10-15 16:15:41,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 16:15:41,545 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:41,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:41,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 16:15:41,758 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 [2022-10-15 16:15:41,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:41,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:41,760 INFO L85 PathProgramCache]: Analyzing trace with hash -175113466, now seen corresponding path program 1 times [2022-10-15 16:15:41,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:41,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732302384] [2022-10-15 16:15:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:41,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 16:15:41,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:41,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732302384] [2022-10-15 16:15:41,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732302384] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:41,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:15:41,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:15:41,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11882682] [2022-10-15 16:15:41,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:41,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:15:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:41,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:15:41,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:15:41,847 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:41,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:41,927 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2022-10-15 16:15:41,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:15:41,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-15 16:15:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:41,929 INFO L225 Difference]: With dead ends: 65 [2022-10-15 16:15:41,929 INFO L226 Difference]: Without dead ends: 65 [2022-10-15 16:15:41,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:15:41,930 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 70 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:41,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 90 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:41,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-10-15 16:15:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-10-15 16:15:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 48 states have (on average 1.375) internal successors, (66), 60 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:41,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2022-10-15 16:15:41,937 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 15 [2022-10-15 16:15:41,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:41,938 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2022-10-15 16:15:41,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:41,938 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2022-10-15 16:15:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 16:15:41,939 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:41,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:41,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 16:15:41,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:41,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:41,940 INFO L85 PathProgramCache]: Analyzing trace with hash -175113465, now seen corresponding path program 1 times [2022-10-15 16:15:41,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:41,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609491428] [2022-10-15 16:15:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:41,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:42,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 16:15:42,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:42,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609491428] [2022-10-15 16:15:42,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609491428] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:42,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:15:42,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:15:42,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121432951] [2022-10-15 16:15:42,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:42,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:15:42,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:42,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:15:42,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:15:42,076 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:42,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:42,148 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2022-10-15 16:15:42,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:15:42,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-15 16:15:42,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:42,150 INFO L225 Difference]: With dead ends: 59 [2022-10-15 16:15:42,150 INFO L226 Difference]: Without dead ends: 59 [2022-10-15 16:15:42,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:15:42,151 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 63 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:42,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 95 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:42,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-15 16:15:42,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-10-15 16:15:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 48 states have (on average 1.25) internal successors, (60), 54 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2022-10-15 16:15:42,156 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 15 [2022-10-15 16:15:42,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:42,157 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2022-10-15 16:15:42,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:42,157 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2022-10-15 16:15:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-15 16:15:42,158 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:42,158 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:42,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 16:15:42,159 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting bAndErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1579973474, now seen corresponding path program 1 times [2022-10-15 16:15:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:42,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083835010] [2022-10-15 16:15:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 16:15:42,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:42,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083835010] [2022-10-15 16:15:42,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083835010] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:42,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:15:42,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 16:15:42,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586426002] [2022-10-15 16:15:42,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:42,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 16:15:42,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:42,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 16:15:42,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:15:42,311 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:42,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:42,424 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2022-10-15 16:15:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:15:42,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-15 16:15:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:42,427 INFO L225 Difference]: With dead ends: 71 [2022-10-15 16:15:42,427 INFO L226 Difference]: Without dead ends: 71 [2022-10-15 16:15:42,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:15:42,429 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 90 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:42,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 119 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:42,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-15 16:15:42,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2022-10-15 16:15:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 57 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2022-10-15 16:15:42,437 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 18 [2022-10-15 16:15:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:42,437 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2022-10-15 16:15:42,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:42,438 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2022-10-15 16:15:42,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-15 16:15:42,439 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:42,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:42,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 16:15:42,439 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting bAndErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:42,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:42,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1635600150, now seen corresponding path program 1 times [2022-10-15 16:15:42,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:42,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714859119] [2022-10-15 16:15:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:42,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:42,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:42,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714859119] [2022-10-15 16:15:42,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714859119] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:42,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147187516] [2022-10-15 16:15:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:42,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:42,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:42,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:42,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 16:15:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:42,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 16:15:42,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:42,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:42,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147187516] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:42,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:42,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-10-15 16:15:42,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632660373] [2022-10-15 16:15:42,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:42,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 16:15:42,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:42,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 16:15:42,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-10-15 16:15:42,771 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:42,945 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2022-10-15 16:15:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 16:15:42,946 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-10-15 16:15:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:42,947 INFO L225 Difference]: With dead ends: 118 [2022-10-15 16:15:42,947 INFO L226 Difference]: Without dead ends: 118 [2022-10-15 16:15:42,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:15:42,949 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 100 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:42,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 331 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:42,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-10-15 16:15:42,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 101. [2022-10-15 16:15:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 86 states have (on average 1.255813953488372) internal successors, (108), 93 states have internal predecessors, (108), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 16:15:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2022-10-15 16:15:42,957 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 24 [2022-10-15 16:15:42,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:42,958 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2022-10-15 16:15:42,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:42,958 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2022-10-15 16:15:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-15 16:15:42,959 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:42,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:42,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:15:43,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:43,176 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting bAndErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:43,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:43,177 INFO L85 PathProgramCache]: Analyzing trace with hash -92830137, now seen corresponding path program 2 times [2022-10-15 16:15:43,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:43,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625445026] [2022-10-15 16:15:43,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:43,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 16:15:43,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:43,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625445026] [2022-10-15 16:15:43,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625445026] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:43,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596850542] [2022-10-15 16:15:43,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:15:43,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:43,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:43,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:43,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 16:15:43,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:15:43,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:15:43,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 16:15:43,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:43,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:43,910 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 9 treesize of output 7 [2022-10-15 16:15:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:43,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596850542] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:43,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:43,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 22 [2022-10-15 16:15:43,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096826485] [2022-10-15 16:15:43,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:43,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-15 16:15:43,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:43,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-15 16:15:43,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-10-15 16:15:43,950 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 20 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:45,049 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2022-10-15 16:15:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-15 16:15:45,049 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 20 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-10-15 16:15:45,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:45,051 INFO L225 Difference]: With dead ends: 124 [2022-10-15 16:15:45,051 INFO L226 Difference]: Without dead ends: 124 [2022-10-15 16:15:45,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=1118, Unknown=0, NotChecked=0, Total=1332 [2022-10-15 16:15:45,053 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 341 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:45,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 695 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 16:15:45,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-10-15 16:15:45,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2022-10-15 16:15:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 93 states have (on average 1.2258064516129032) internal successors, (114), 98 states have internal predecessors, (114), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 16:15:45,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2022-10-15 16:15:45,061 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 28 [2022-10-15 16:15:45,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:45,062 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2022-10-15 16:15:45,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 20 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:45,062 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2022-10-15 16:15:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-15 16:15:45,064 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:45,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:45,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 16:15:45,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:45,278 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:45,279 INFO L85 PathProgramCache]: Analyzing trace with hash 614987776, now seen corresponding path program 1 times [2022-10-15 16:15:45,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:45,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519434703] [2022-10-15 16:15:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:45,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-15 16:15:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 16:15:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 16:15:45,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:45,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519434703] [2022-10-15 16:15:45,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519434703] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:45,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242269748] [2022-10-15 16:15:45,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:45,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:45,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:45,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:45,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 16:15:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:45,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 16:15:45,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 16:15:45,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:15:45,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242269748] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:45,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:15:45,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-10-15 16:15:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991434372] [2022-10-15 16:15:45,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:45,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:15:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:45,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:15:45,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:15:45,514 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 16:15:45,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:45,551 INFO L93 Difference]: Finished difference Result 106 states and 125 transitions. [2022-10-15 16:15:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:15:45,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2022-10-15 16:15:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:45,553 INFO L225 Difference]: With dead ends: 106 [2022-10-15 16:15:45,553 INFO L226 Difference]: Without dead ends: 106 [2022-10-15 16:15:45,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:15:45,554 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 59 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:45,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 85 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:15:45,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-10-15 16:15:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-10-15 16:15:45,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 98 states have internal predecessors, (113), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 16:15:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2022-10-15 16:15:45,562 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 40 [2022-10-15 16:15:45,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:45,562 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2022-10-15 16:15:45,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 16:15:45,562 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2022-10-15 16:15:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-15 16:15:45,564 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:45,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:45,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 16:15:45,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-15 16:15:45,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:45,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:45,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1955949184, now seen corresponding path program 1 times [2022-10-15 16:15:45,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:45,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739605924] [2022-10-15 16:15:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:45,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-15 16:15:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:45,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 16:15:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-15 16:15:45,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:45,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739605924] [2022-10-15 16:15:45,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739605924] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:45,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683438830] [2022-10-15 16:15:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:45,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:45,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:45,928 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:45,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 16:15:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:46,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 16:15:46,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:46,075 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-15 16:15:46,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:15:46,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683438830] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:46,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:15:46,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2022-10-15 16:15:46,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334283264] [2022-10-15 16:15:46,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:46,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:15:46,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:46,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:15:46,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:15:46,078 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 16:15:46,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:46,115 INFO L93 Difference]: Finished difference Result 118 states and 139 transitions. [2022-10-15 16:15:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:15:46,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2022-10-15 16:15:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:46,117 INFO L225 Difference]: With dead ends: 118 [2022-10-15 16:15:46,118 INFO L226 Difference]: Without dead ends: 118 [2022-10-15 16:15:46,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:15:46,119 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 32 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 82 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 [2022-10-15 16:15:46,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 82 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:15:46,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-10-15 16:15:46,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2022-10-15 16:15:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 100 states have internal predecessors, (115), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 16:15:46,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2022-10-15 16:15:46,125 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 52 [2022-10-15 16:15:46,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:46,126 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2022-10-15 16:15:46,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 16:15:46,126 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2022-10-15 16:15:46,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-15 16:15:46,128 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:46,129 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:46,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-15 16:15:46,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:46,344 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:46,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:46,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1955949134, now seen corresponding path program 1 times [2022-10-15 16:15:46,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:46,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051195051] [2022-10-15 16:15:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:46,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:46,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-15 16:15:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:46,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 16:15:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-15 16:15:46,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:46,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051195051] [2022-10-15 16:15:46,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051195051] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:46,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:15:46,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 16:15:46,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905356301] [2022-10-15 16:15:46,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:46,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 16:15:46,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:46,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 16:15:46,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:15:46,585 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 16:15:46,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:46,659 INFO L93 Difference]: Finished difference Result 115 states and 134 transitions. [2022-10-15 16:15:46,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:15:46,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2022-10-15 16:15:46,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:46,661 INFO L225 Difference]: With dead ends: 115 [2022-10-15 16:15:46,661 INFO L226 Difference]: Without dead ends: 115 [2022-10-15 16:15:46,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:15:46,662 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 43 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:46,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 101 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:46,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-15 16:15:46,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2022-10-15 16:15:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 99 states have (on average 1.1919191919191918) internal successors, (118), 103 states have internal predecessors, (118), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 16:15:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2022-10-15 16:15:46,670 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 52 [2022-10-15 16:15:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:46,670 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2022-10-15 16:15:46,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 16:15:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2022-10-15 16:15:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-15 16:15:46,673 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:46,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:46,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-15 16:15:46,674 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:46,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:46,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2066435613, now seen corresponding path program 1 times [2022-10-15 16:15:46,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:46,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008092341] [2022-10-15 16:15:46,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:46,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:46,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-15 16:15:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 16:15:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-15 16:15:46,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:46,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008092341] [2022-10-15 16:15:46,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008092341] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:46,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003992771] [2022-10-15 16:15:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:46,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:46,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:46,881 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:46,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 16:15:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:46,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 16:15:46,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-15 16:15:47,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-15 16:15:47,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003992771] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:47,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:47,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2022-10-15 16:15:47,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853612367] [2022-10-15 16:15:47,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:47,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 16:15:47,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:47,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 16:15:47,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:15:47,191 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:15:47,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:47,310 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2022-10-15 16:15:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 16:15:47,311 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 57 [2022-10-15 16:15:47,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:47,312 INFO L225 Difference]: With dead ends: 120 [2022-10-15 16:15:47,312 INFO L226 Difference]: Without dead ends: 120 [2022-10-15 16:15:47,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 109 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-10-15 16:15:47,313 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 123 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:47,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 246 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:47,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-15 16:15:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 109. [2022-10-15 16:15:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 97 states have (on average 1.1649484536082475) internal successors, (113), 101 states have internal predecessors, (113), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 16:15:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2022-10-15 16:15:47,319 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 57 [2022-10-15 16:15:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:47,319 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2022-10-15 16:15:47,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 16:15:47,320 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2022-10-15 16:15:47,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-15 16:15:47,321 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:47,321 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:47,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 16:15:47,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:47,536 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:47,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:47,537 INFO L85 PathProgramCache]: Analyzing trace with hash -637529940, now seen corresponding path program 1 times [2022-10-15 16:15:47,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:47,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589793060] [2022-10-15 16:15:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:47,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:48,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-15 16:15:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:48,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 16:15:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:48,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-15 16:15:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-15 16:15:48,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:48,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589793060] [2022-10-15 16:15:48,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589793060] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:48,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764134909] [2022-10-15 16:15:48,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:48,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:48,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:48,513 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:48,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 16:15:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:48,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-15 16:15:48,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-15 16:15:48,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-15 16:15:49,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764134909] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:49,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:49,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2022-10-15 16:15:49,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789263164] [2022-10-15 16:15:49,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:49,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 16:15:49,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 16:15:49,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:15:49,050 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-15 16:15:49,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:49,156 INFO L93 Difference]: Finished difference Result 209 states and 243 transitions. [2022-10-15 16:15:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 16:15:49,156 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 74 [2022-10-15 16:15:49,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:49,160 INFO L225 Difference]: With dead ends: 209 [2022-10-15 16:15:49,160 INFO L226 Difference]: Without dead ends: 209 [2022-10-15 16:15:49,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 145 SyntacticMatches, 10 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-10-15 16:15:49,163 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 74 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:49,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 505 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-10-15 16:15:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 169. [2022-10-15 16:15:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 151 states have (on average 1.1324503311258278) internal successors, (171), 156 states have internal predecessors, (171), 10 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2022-10-15 16:15:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 201 transitions. [2022-10-15 16:15:49,182 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 201 transitions. Word has length 74 [2022-10-15 16:15:49,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:49,182 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 201 transitions. [2022-10-15 16:15:49,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-15 16:15:49,182 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 201 transitions. [2022-10-15 16:15:49,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-15 16:15:49,185 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:49,185 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:49,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 16:15:49,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-15 16:15:49,399 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:49,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:49,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1167027616, now seen corresponding path program 2 times [2022-10-15 16:15:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:49,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481610198] [2022-10-15 16:15:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:49,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:49,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 16:15:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:49,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 16:15:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-15 16:15:49,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:49,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481610198] [2022-10-15 16:15:49,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481610198] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:49,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107895293] [2022-10-15 16:15:49,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:15:49,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:49,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:49,845 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:49,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 16:15:49,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:15:49,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:15:49,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:15:49,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:49,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:15:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-15 16:15:50,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-15 16:15:50,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107895293] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:50,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:50,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 18 [2022-10-15 16:15:50,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424901114] [2022-10-15 16:15:50,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:50,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-15 16:15:50,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:50,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-15 16:15:50,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-10-15 16:15:50,843 INFO L87 Difference]: Start difference. First operand 169 states and 201 transitions. Second operand has 19 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-15 16:15:51,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:51,347 INFO L93 Difference]: Finished difference Result 250 states and 293 transitions. [2022-10-15 16:15:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-15 16:15:51,348 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 73 [2022-10-15 16:15:51,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:51,350 INFO L225 Difference]: With dead ends: 250 [2022-10-15 16:15:51,350 INFO L226 Difference]: Without dead ends: 250 [2022-10-15 16:15:51,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 136 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2022-10-15 16:15:51,351 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 106 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:51,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 428 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 367 Invalid, 0 Unknown, 23 Unchecked, 0.2s Time] [2022-10-15 16:15:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-10-15 16:15:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 222. [2022-10-15 16:15:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 202 states have (on average 1.1336633663366336) internal successors, (229), 207 states have internal predecessors, (229), 10 states have call successors, (10), 4 states have call predecessors, (10), 8 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2022-10-15 16:15:51,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 259 transitions. [2022-10-15 16:15:51,362 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 259 transitions. Word has length 73 [2022-10-15 16:15:51,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:51,362 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 259 transitions. [2022-10-15 16:15:51,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-15 16:15:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 259 transitions. [2022-10-15 16:15:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-15 16:15:51,364 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:51,365 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:51,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 16:15:51,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-15 16:15:51,579 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:51,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:51,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1875203454, now seen corresponding path program 1 times [2022-10-15 16:15:51,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:51,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961474958] [2022-10-15 16:15:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:51,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-15 16:15:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:54,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 16:15:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-15 16:15:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:15:54,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:54,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961474958] [2022-10-15 16:15:54,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961474958] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:54,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205284731] [2022-10-15 16:15:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:54,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:54,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:54,508 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:54,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 16:15:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:54,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 77 conjunts are in the unsatisfiable core [2022-10-15 16:15:54,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:55,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:15:55,356 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:15:55,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 39 [2022-10-15 16:15:55,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:15:55,461 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:15:55,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2022-10-15 16:15:56,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:15:56,043 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:15:56,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 39 [2022-10-15 16:15:56,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:15:56,136 INFO L356 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2022-10-15 16:15:56,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2022-10-15 16:15:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:15:56,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:58,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 92 [2022-10-15 16:15:58,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 54 [2022-10-15 16:15:59,096 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:15:59,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 100 [2022-10-15 16:15:59,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-10-15 16:15:59,155 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:15:59,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 95 [2022-10-15 16:15:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 16 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 16:15:59,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205284731] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:59,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:59,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 28] total 78 [2022-10-15 16:15:59,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079147809] [2022-10-15 16:15:59,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:59,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-10-15 16:15:59,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:59,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-10-15 16:15:59,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=5472, Unknown=0, NotChecked=0, Total=6006 [2022-10-15 16:15:59,662 INFO L87 Difference]: Start difference. First operand 222 states and 259 transitions. Second operand has 78 states, 74 states have (on average 2.3378378378378377) internal successors, (173), 75 states have internal predecessors, (173), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-10-15 16:16:13,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:16:13,549 INFO L93 Difference]: Finished difference Result 533 states and 622 transitions. [2022-10-15 16:16:13,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-10-15 16:16:13,550 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 74 states have (on average 2.3378378378378377) internal successors, (173), 75 states have internal predecessors, (173), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 75 [2022-10-15 16:16:13,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:16:13,553 INFO L225 Difference]: With dead ends: 533 [2022-10-15 16:16:13,554 INFO L226 Difference]: Without dead ends: 515 [2022-10-15 16:16:13,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 118 SyntacticMatches, 14 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11938 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=3008, Invalid=30298, Unknown=0, NotChecked=0, Total=33306 [2022-10-15 16:16:13,570 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 706 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 3572 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 4685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 3572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 719 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:16:13,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 1996 Invalid, 4685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 3572 Invalid, 0 Unknown, 719 Unchecked, 3.0s Time] [2022-10-15 16:16:13,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-10-15 16:16:13,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 298. [2022-10-15 16:16:13,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 270 states have (on average 1.1037037037037036) internal successors, (298), 278 states have internal predecessors, (298), 13 states have call successors, (13), 6 states have call predecessors, (13), 13 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30) [2022-10-15 16:16:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 341 transitions. [2022-10-15 16:16:13,593 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 341 transitions. Word has length 75 [2022-10-15 16:16:13,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:16:13,594 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 341 transitions. [2022-10-15 16:16:13,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 74 states have (on average 2.3378378378378377) internal successors, (173), 75 states have internal predecessors, (173), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-10-15 16:16:13,594 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 341 transitions. [2022-10-15 16:16:13,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-15 16:16:13,596 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:16:13,597 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:16:13,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 16:16:13,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-15 16:16:13,811 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:16:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:16:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1910244490, now seen corresponding path program 2 times [2022-10-15 16:16:13,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:16:13,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649386281] [2022-10-15 16:16:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:16:13,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:16:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:16:15,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-15 16:16:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:16:15,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 16:16:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:16:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-15 16:16:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:16:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 16:16:15,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:16:15,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649386281] [2022-10-15 16:16:15,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649386281] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:16:15,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309482741] [2022-10-15 16:16:15,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:16:15,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:16:15,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:16:15,881 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:16:15,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 16:16:15,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:16:15,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:16:15,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 60 conjunts are in the unsatisfiable core [2022-10-15 16:16:15,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:16:16,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:16:16,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:16:16,430 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:16:16,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27 [2022-10-15 16:16:16,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:16:16,495 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:16:16,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2022-10-15 16:16:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 16:16:17,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:16:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-15 16:16:18,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309482741] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:16:18,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:16:18,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 18] total 57 [2022-10-15 16:16:18,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560941166] [2022-10-15 16:16:18,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:16:18,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-10-15 16:16:18,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:16:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-10-15 16:16:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2938, Unknown=0, NotChecked=0, Total=3192 [2022-10-15 16:16:18,414 INFO L87 Difference]: Start difference. First operand 298 states and 341 transitions. Second operand has 57 states, 57 states have (on average 2.912280701754386) internal successors, (166), 55 states have internal predecessors, (166), 7 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-10-15 16:16:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:16:24,051 INFO L93 Difference]: Finished difference Result 506 states and 579 transitions. [2022-10-15 16:16:24,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-10-15 16:16:24,052 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.912280701754386) internal successors, (166), 55 states have internal predecessors, (166), 7 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 75 [2022-10-15 16:16:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:16:24,055 INFO L225 Difference]: With dead ends: 506 [2022-10-15 16:16:24,055 INFO L226 Difference]: Without dead ends: 416 [2022-10-15 16:16:24,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4134 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1330, Invalid=12242, Unknown=0, NotChecked=0, Total=13572 [2022-10-15 16:16:24,059 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 371 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 3313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 688 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-15 16:16:24,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1741 Invalid, 3313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2464 Invalid, 0 Unknown, 688 Unchecked, 1.7s Time] [2022-10-15 16:16:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-10-15 16:16:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 309. [2022-10-15 16:16:24,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 281 states have (on average 1.085409252669039) internal successors, (305), 287 states have internal predecessors, (305), 14 states have call successors, (14), 7 states have call predecessors, (14), 12 states have return successors, (30), 14 states have call predecessors, (30), 14 states have call successors, (30) [2022-10-15 16:16:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 349 transitions. [2022-10-15 16:16:24,077 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 349 transitions. Word has length 75 [2022-10-15 16:16:24,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:16:24,077 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 349 transitions. [2022-10-15 16:16:24,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.912280701754386) internal successors, (166), 55 states have internal predecessors, (166), 7 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-10-15 16:16:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 349 transitions. [2022-10-15 16:16:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-15 16:16:24,080 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:16:24,080 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:16:24,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 16:16:24,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-15 16:16:24,296 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [bAndErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, bAndErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:16:24,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:16:24,297 INFO L85 PathProgramCache]: Analyzing trace with hash 112739418, now seen corresponding path program 3 times [2022-10-15 16:16:24,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:16:24,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070562004] [2022-10-15 16:16:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:16:24,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:16:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:16:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-15 16:16:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:16:25,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-15 16:16:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:16:25,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-15 16:16:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:16:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 16:16:25,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:16:25,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070562004] [2022-10-15 16:16:25,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070562004] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:16:25,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12237134] [2022-10-15 16:16:25,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 16:16:25,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:16:25,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:16:25,688 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:16:25,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 16:16:25,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-15 16:16:25,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:16:25,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 81 conjunts are in the unsatisfiable core [2022-10-15 16:16:25,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:16:25,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:16:25,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-15 16:16:25,890 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 18 treesize of output 14 [2022-10-15 16:16:26,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:16:26,546 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:16:26,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-10-15 16:16:26,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:16:26,623 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:16:26,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 23 [2022-10-15 16:16:27,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:16:27,100 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:16:27,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-10-15 16:16:27,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:16:27,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:16:27,203 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-15 16:16:27,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 35 [2022-10-15 16:16:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 16:16:28,126 INFO L328 TraceCheckSpWp]: Computing backward predicates...