/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-examples/standard_running-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 18:13:41,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 18:13:41,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 18:13:41,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 18:13:41,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 18:13:41,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 18:13:41,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 18:13:41,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 18:13:41,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 18:13:41,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 18:13:41,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 18:13:41,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 18:13:41,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 18:13:41,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 18:13:41,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 18:13:41,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 18:13:41,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 18:13:41,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 18:13:41,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 18:13:41,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 18:13:41,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 18:13:41,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 18:13:41,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 18:13:41,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 18:13:41,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 18:13:41,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 18:13:41,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 18:13:41,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 18:13:41,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 18:13:41,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 18:13:41,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 18:13:41,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 18:13:41,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 18:13:41,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 18:13:41,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 18:13:41,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 18:13:41,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 18:13:41,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 18:13:41,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 18:13:41,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 18:13:41,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 18:13:41,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 18:13:41,519 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 18:13:41,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 18:13:41,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 18:13:41,523 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 18:13:41,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 18:13:41,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 18:13:41,525 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 18:13:41,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 18:13:41,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 18:13:41,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 18:13:41,525 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 18:13:41,526 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 18:13:41,526 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 18:13:41,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 18:13:41,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 18:13:41,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 18:13:41,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 18:13:41,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 18:13:41,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 18:13:41,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 18:13:41,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:13:41,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 18:13:41,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 18:13:41,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 18:13:41,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 18:13:41,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 18:13:42,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 18:13:42,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 18:13:42,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 18:13:42,083 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 18:13:42,084 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 18:13:42,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_running-2.i [2022-10-15 18:13:42,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddfe9a8c8/c7cb1b68ae034d6fb9dd57d0326909b2/FLAG28723a740 [2022-10-15 18:13:42,845 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 18:13:42,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_running-2.i [2022-10-15 18:13:42,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddfe9a8c8/c7cb1b68ae034d6fb9dd57d0326909b2/FLAG28723a740 [2022-10-15 18:13:43,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddfe9a8c8/c7cb1b68ae034d6fb9dd57d0326909b2 [2022-10-15 18:13:43,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 18:13:43,193 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 18:13:43,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 18:13:43,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 18:13:43,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 18:13:43,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4caab48e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43, skipping insertion in model container [2022-10-15 18:13:43,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 18:13:43,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 18:13:43,404 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_running-2.i[811,824] [2022-10-15 18:13:43,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:13:43,442 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 18:13:43,456 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_running-2.i[811,824] [2022-10-15 18:13:43,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:13:43,485 INFO L208 MainTranslator]: Completed translation [2022-10-15 18:13:43,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43 WrapperNode [2022-10-15 18:13:43,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 18:13:43,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 18:13:43,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 18:13:43,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 18:13:43,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,537 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-10-15 18:13:43,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 18:13:43,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 18:13:43,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 18:13:43,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 18:13:43,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,571 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 18:13:43,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 18:13:43,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 18:13:43,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 18:13:43,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43" (1/1) ... [2022-10-15 18:13:43,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:13:43,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:43,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 18:13:43,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 18:13:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 18:13:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 18:13:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 18:13:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 18:13:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 18:13:43,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 18:13:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 18:13:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 18:13:43,800 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 18:13:43,803 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 18:13:44,127 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 18:13:44,154 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 18:13:44,154 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 18:13:44,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:13:44 BoogieIcfgContainer [2022-10-15 18:13:44,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 18:13:44,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 18:13:44,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 18:13:44,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 18:13:44,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:13:43" (1/3) ... [2022-10-15 18:13:44,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676d7368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:13:44, skipping insertion in model container [2022-10-15 18:13:44,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:43" (2/3) ... [2022-10-15 18:13:44,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676d7368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:13:44, skipping insertion in model container [2022-10-15 18:13:44,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:13:44" (3/3) ... [2022-10-15 18:13:44,205 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_running-2.i [2022-10-15 18:13:44,289 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 18:13:44,289 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-10-15 18:13:44,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 18:13:44,422 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;@17dc2a5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 18:13:44,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-10-15 18:13:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:44,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 18:13:44,449 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:44,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 18:13:44,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:13:44,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:44,473 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-10-15 18:13:44,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:44,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589524444] [2022-10-15 18:13:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:44,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:45,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:45,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589524444] [2022-10-15 18:13:45,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589524444] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:45,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:13:45,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:13:45,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758168496] [2022-10-15 18:13:45,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:45,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:13:45,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:45,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:13:45,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:45,095 INFO L87 Difference]: Start difference. First operand has 53 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:45,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:45,179 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-10-15 18:13:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:13:45,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 18:13:45,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:45,195 INFO L225 Difference]: With dead ends: 49 [2022-10-15 18:13:45,196 INFO L226 Difference]: Without dead ends: 47 [2022-10-15 18:13:45,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:45,204 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 49 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:45,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 40 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:13:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-15 18:13:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-10-15 18:13:45,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:45,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2022-10-15 18:13:45,257 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 4 [2022-10-15 18:13:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:45,258 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2022-10-15 18:13:45,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:45,259 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2022-10-15 18:13:45,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 18:13:45,259 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:45,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 18:13:45,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 18:13:45,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:13:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-10-15 18:13:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:45,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736844962] [2022-10-15 18:13:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:45,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:45,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:45,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:45,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736844962] [2022-10-15 18:13:45,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736844962] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:45,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:13:45,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:13:45,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712237675] [2022-10-15 18:13:45,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:45,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:13:45,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:45,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:13:45,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:45,576 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:45,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:45,656 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-10-15 18:13:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:13:45,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 18:13:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:45,658 INFO L225 Difference]: With dead ends: 51 [2022-10-15 18:13:45,659 INFO L226 Difference]: Without dead ends: 51 [2022-10-15 18:13:45,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:45,661 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:45,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:13:45,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-10-15 18:13:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2022-10-15 18:13:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.6) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2022-10-15 18:13:45,672 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 4 [2022-10-15 18:13:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:45,672 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2022-10-15 18:13:45,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2022-10-15 18:13:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 18:13:45,673 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:45,673 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:45,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 18:13:45,674 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:13:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:45,675 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2022-10-15 18:13:45,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:45,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983755949] [2022-10-15 18:13:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:45,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:45,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:45,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983755949] [2022-10-15 18:13:45,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983755949] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:45,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187030504] [2022-10-15 18:13:45,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:45,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:45,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:45,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:13:45,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 18:13:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:46,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 18:13:46,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:46,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:13:46,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-10-15 18:13:46,192 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 10 treesize of output 8 [2022-10-15 18:13:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:46,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:46,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187030504] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:46,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:46,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-10-15 18:13:46,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493234417] [2022-10-15 18:13:46,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:46,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 18:13:46,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:46,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 18:13:46,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 18:13:46,403 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:46,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:46,608 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2022-10-15 18:13:46,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 18:13:46,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 18:13:46,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:46,611 INFO L225 Difference]: With dead ends: 62 [2022-10-15 18:13:46,611 INFO L226 Difference]: Without dead ends: 62 [2022-10-15 18:13:46,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-10-15 18:13:46,614 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 40 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:46,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 140 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:13:46,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-10-15 18:13:46,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2022-10-15 18:13:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 59 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2022-10-15 18:13:46,624 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 8 [2022-10-15 18:13:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:46,624 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2022-10-15 18:13:46,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2022-10-15 18:13:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 18:13:46,626 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:46,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:46,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 18:13:46,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:46,841 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:13:46,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:46,843 INFO L85 PathProgramCache]: Analyzing trace with hash -144029192, now seen corresponding path program 1 times [2022-10-15 18:13:46,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:46,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385917349] [2022-10-15 18:13:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:46,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:13:46,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:46,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385917349] [2022-10-15 18:13:46,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385917349] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:46,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134142300] [2022-10-15 18:13:46,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:46,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:46,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:46,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:13:46,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 18:13:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:47,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 18:13:47,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:47,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:47,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134142300] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:47,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:47,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2022-10-15 18:13:47,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501074959] [2022-10-15 18:13:47,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:47,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 18:13:47,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:47,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 18:13:47,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2022-10-15 18:13:47,129 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:47,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:47,507 INFO L93 Difference]: Finished difference Result 218 states and 250 transitions. [2022-10-15 18:13:47,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 18:13:47,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 18:13:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:47,510 INFO L225 Difference]: With dead ends: 218 [2022-10-15 18:13:47,511 INFO L226 Difference]: Without dead ends: 218 [2022-10-15 18:13:47,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-10-15 18:13:47,513 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 469 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:47,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 169 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 18:13:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-10-15 18:13:47,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 169. [2022-10-15 18:13:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 156 states have (on average 1.6025641025641026) internal successors, (250), 168 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 250 transitions. [2022-10-15 18:13:47,531 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 250 transitions. Word has length 14 [2022-10-15 18:13:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:47,532 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 250 transitions. [2022-10-15 18:13:47,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 250 transitions. [2022-10-15 18:13:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 18:13:47,533 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:47,533 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2022-10-15 18:13:47,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:47,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 18:13:47,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:13:47,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:47,750 INFO L85 PathProgramCache]: Analyzing trace with hash -2061457070, now seen corresponding path program 2 times [2022-10-15 18:13:47,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:47,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363895574] [2022-10-15 18:13:47,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:47,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:48,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:48,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363895574] [2022-10-15 18:13:48,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363895574] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:48,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211049165] [2022-10-15 18:13:48,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:13:48,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:48,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:48,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:13:48,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 18:13:48,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 18:13:48,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:13:48,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-15 18:13:48,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:48,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:13:48,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-10-15 18:13:48,104 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 10 treesize of output 8 [2022-10-15 18:13:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:48,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:48,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211049165] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:48,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:48,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-10-15 18:13:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739479884] [2022-10-15 18:13:48,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:48,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 18:13:48,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:48,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 18:13:48,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-10-15 18:13:48,519 INFO L87 Difference]: Start difference. First operand 169 states and 250 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:48,865 INFO L93 Difference]: Finished difference Result 190 states and 274 transitions. [2022-10-15 18:13:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 18:13:48,866 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-15 18:13:48,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:48,868 INFO L225 Difference]: With dead ends: 190 [2022-10-15 18:13:48,868 INFO L226 Difference]: Without dead ends: 190 [2022-10-15 18:13:48,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2022-10-15 18:13:48,870 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 61 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:48,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 189 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:13:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-10-15 18:13:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2022-10-15 18:13:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 173 states have (on average 1.560693641618497) internal successors, (270), 185 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 270 transitions. [2022-10-15 18:13:48,898 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 270 transitions. Word has length 20 [2022-10-15 18:13:48,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:48,898 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 270 transitions. [2022-10-15 18:13:48,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 270 transitions. [2022-10-15 18:13:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 18:13:48,900 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:48,900 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:48,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:49,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:49,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:13:49,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1934557212, now seen corresponding path program 1 times [2022-10-15 18:13:49,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:49,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144304078] [2022-10-15 18:13:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:49,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-15 18:13:49,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:49,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144304078] [2022-10-15 18:13:49,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144304078] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:49,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:13:49,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:13:49,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66974548] [2022-10-15 18:13:49,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:49,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:13:49,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:49,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:13:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:49,202 INFO L87 Difference]: Start difference. First operand 186 states and 270 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:49,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:49,226 INFO L93 Difference]: Finished difference Result 182 states and 246 transitions. [2022-10-15 18:13:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:13:49,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-10-15 18:13:49,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:49,229 INFO L225 Difference]: With dead ends: 182 [2022-10-15 18:13:49,229 INFO L226 Difference]: Without dead ends: 182 [2022-10-15 18:13:49,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:49,233 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:49,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 36 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:13:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-10-15 18:13:49,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-10-15 18:13:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 173 states have (on average 1.4219653179190752) internal successors, (246), 181 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:49,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 246 transitions. [2022-10-15 18:13:49,259 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 246 transitions. Word has length 32 [2022-10-15 18:13:49,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:49,260 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 246 transitions. [2022-10-15 18:13:49,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:49,261 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 246 transitions. [2022-10-15 18:13:49,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 18:13:49,262 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:49,263 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:49,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 18:13:49,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:13:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1934557211, now seen corresponding path program 1 times [2022-10-15 18:13:49,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:49,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791306968] [2022-10-15 18:13:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:49,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-15 18:13:49,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:49,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791306968] [2022-10-15 18:13:49,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791306968] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:49,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:13:49,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 18:13:49,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856543007] [2022-10-15 18:13:49,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:49,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 18:13:49,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:49,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 18:13:49,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:13:49,468 INFO L87 Difference]: Start difference. First operand 182 states and 246 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:49,538 INFO L93 Difference]: Finished difference Result 182 states and 242 transitions. [2022-10-15 18:13:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 18:13:49,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-10-15 18:13:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:49,541 INFO L225 Difference]: With dead ends: 182 [2022-10-15 18:13:49,542 INFO L226 Difference]: Without dead ends: 182 [2022-10-15 18:13:49,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:13:49,546 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 86 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:49,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 47 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:13:49,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-10-15 18:13:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-10-15 18:13:49,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 173 states have (on average 1.3988439306358382) internal successors, (242), 181 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 242 transitions. [2022-10-15 18:13:49,563 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 242 transitions. Word has length 32 [2022-10-15 18:13:49,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:49,567 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 242 transitions. [2022-10-15 18:13:49,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:49,573 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 242 transitions. [2022-10-15 18:13:49,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-15 18:13:49,577 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:49,578 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:49,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 18:13:49,578 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:13:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1772256717, now seen corresponding path program 1 times [2022-10-15 18:13:49,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:49,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663611367] [2022-10-15 18:13:49,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:49,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 18:13:49,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:49,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663611367] [2022-10-15 18:13:49,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663611367] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:49,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382925370] [2022-10-15 18:13:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:49,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:49,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:49,762 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:13:49,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 18:13:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:49,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 18:13:49,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 18:13:49,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 18:13:49,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382925370] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:49,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:49,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-10-15 18:13:49,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941484300] [2022-10-15 18:13:49,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:49,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 18:13:49,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:49,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 18:13:49,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 18:13:49,998 INFO L87 Difference]: Start difference. First operand 182 states and 242 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:50,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:50,456 INFO L93 Difference]: Finished difference Result 432 states and 504 transitions. [2022-10-15 18:13:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 18:13:50,456 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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 35 [2022-10-15 18:13:50,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:50,459 INFO L225 Difference]: With dead ends: 432 [2022-10-15 18:13:50,459 INFO L226 Difference]: Without dead ends: 432 [2022-10-15 18:13:50,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 18:13:50,460 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 836 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:50,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 251 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 18:13:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-10-15 18:13:50,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 357. [2022-10-15 18:13:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 348 states have (on average 1.4482758620689655) internal successors, (504), 356 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 504 transitions. [2022-10-15 18:13:50,471 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 504 transitions. Word has length 35 [2022-10-15 18:13:50,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:50,471 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 504 transitions. [2022-10-15 18:13:50,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 504 transitions. [2022-10-15 18:13:50,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-15 18:13:50,473 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:50,473 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1] [2022-10-15 18:13:50,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-15 18:13:50,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:50,689 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:13:50,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:50,690 INFO L85 PathProgramCache]: Analyzing trace with hash -256132636, now seen corresponding path program 3 times [2022-10-15 18:13:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:50,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356975122] [2022-10-15 18:13:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:50,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:51,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:51,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356975122] [2022-10-15 18:13:51,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356975122] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:51,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999724358] [2022-10-15 18:13:51,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 18:13:51,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:51,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:51,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:13:51,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 18:13:51,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 18:13:51,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:13:51,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 18:13:51,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:51,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:13:51,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-10-15 18:13:51,464 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 10 treesize of output 8 [2022-10-15 18:13:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-10-15 18:13:51,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 18:13:51,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999724358] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:51,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 18:13:51,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2022-10-15 18:13:51,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061258763] [2022-10-15 18:13:51,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:51,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 18:13:51,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:51,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 18:13:51,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-10-15 18:13:51,708 INFO L87 Difference]: Start difference. First operand 357 states and 504 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:51,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:51,786 INFO L93 Difference]: Finished difference Result 354 states and 474 transitions. [2022-10-15 18:13:51,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 18:13:51,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 44 [2022-10-15 18:13:51,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:51,790 INFO L225 Difference]: With dead ends: 354 [2022-10-15 18:13:51,790 INFO L226 Difference]: Without dead ends: 354 [2022-10-15 18:13:51,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-10-15 18:13:51,793 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 94 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:51,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 77 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:13:51,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-10-15 18:13:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2022-10-15 18:13:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 348 states have (on average 1.3620689655172413) internal successors, (474), 353 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 474 transitions. [2022-10-15 18:13:51,806 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 474 transitions. Word has length 44 [2022-10-15 18:13:51,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:51,806 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 474 transitions. [2022-10-15 18:13:51,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:51,807 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 474 transitions. [2022-10-15 18:13:51,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-10-15 18:13:51,814 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:51,815 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:51,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:52,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:52,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:13:52,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:52,032 INFO L85 PathProgramCache]: Analyzing trace with hash 883057750, now seen corresponding path program 1 times [2022-10-15 18:13:52,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:52,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323744185] [2022-10-15 18:13:52,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:52,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 18:13:52,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:52,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323744185] [2022-10-15 18:13:52,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323744185] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:52,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100023626] [2022-10-15 18:13:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:52,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:52,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:52,485 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:13:52,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 18:13:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:52,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 18:13:52,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 18:13:52,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 18:13:53,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100023626] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:53,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:53,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2022-10-15 18:13:53,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563774604] [2022-10-15 18:13:53,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:53,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-15 18:13:53,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:53,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-15 18:13:53,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 18:13:53,052 INFO L87 Difference]: Start difference. First operand 354 states and 474 transitions. Second operand has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:54,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:54,095 INFO L93 Difference]: Finished difference Result 850 states and 1002 transitions. [2022-10-15 18:13:54,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 18:13:54,097 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-10-15 18:13:54,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:54,103 INFO L225 Difference]: With dead ends: 850 [2022-10-15 18:13:54,103 INFO L226 Difference]: Without dead ends: 850 [2022-10-15 18:13:54,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 18:13:54,105 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1864 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:54,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1864 Valid, 513 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 18:13:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-10-15 18:13:54,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 738. [2022-10-15 18:13:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 732 states have (on average 1.3688524590163935) internal successors, (1002), 737 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1002 transitions. [2022-10-15 18:13:54,130 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1002 transitions. Word has length 69 [2022-10-15 18:13:54,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:54,130 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1002 transitions. [2022-10-15 18:13:54,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:54,131 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1002 transitions. [2022-10-15 18:13:54,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-10-15 18:13:54,132 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:54,133 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:54,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:54,348 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:13:54,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:54,349 INFO L85 PathProgramCache]: Analyzing trace with hash -921053658, now seen corresponding path program 2 times [2022-10-15 18:13:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:54,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402611581] [2022-10-15 18:13:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 18:13:55,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:55,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402611581] [2022-10-15 18:13:55,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402611581] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:55,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198398035] [2022-10-15 18:13:55,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:13:55,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:55,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:55,928 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:13:55,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 18:13:56,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 18:13:56,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:13:56,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 18:13:56,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:56,057 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-15 18:13:56,058 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-10-15 18:13:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-10-15 18:13:56,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-10-15 18:13:59,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198398035] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:59,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:59,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 4, 4] total 39 [2022-10-15 18:13:59,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073982526] [2022-10-15 18:13:59,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:59,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-10-15 18:13:59,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:59,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-10-15 18:13:59,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=935, Unknown=0, NotChecked=0, Total=1482 [2022-10-15 18:13:59,116 INFO L87 Difference]: Start difference. First operand 738 states and 1002 transitions. Second operand has 39 states, 39 states have (on average 4.153846153846154) internal successors, (162), 39 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:14:01,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:14:01,819 INFO L93 Difference]: Finished difference Result 785 states and 947 transitions. [2022-10-15 18:14:01,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-10-15 18:14:01,820 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.153846153846154) internal successors, (162), 39 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-10-15 18:14:01,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:14:01,825 INFO L225 Difference]: With dead ends: 785 [2022-10-15 18:14:01,825 INFO L226 Difference]: Without dead ends: 785 [2022-10-15 18:14:01,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1795, Invalid=3175, Unknown=0, NotChecked=0, Total=4970 [2022-10-15 18:14:01,829 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 5010 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5010 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:14:01,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5010 Valid, 543 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-15 18:14:01,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-10-15 18:14:01,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 782. [2022-10-15 18:14:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 780 states have (on average 1.2102564102564102) internal successors, (944), 781 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:14:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 944 transitions. [2022-10-15 18:14:01,852 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 944 transitions. Word has length 133 [2022-10-15 18:14:01,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:14:01,853 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 944 transitions. [2022-10-15 18:14:01,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.153846153846154) internal successors, (162), 39 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:14:01,853 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 944 transitions. [2022-10-15 18:14:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-10-15 18:14:01,864 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:14:01,864 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:14:01,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 18:14:02,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:14:02,081 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:14:02,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:14:02,083 INFO L85 PathProgramCache]: Analyzing trace with hash 771723126, now seen corresponding path program 1 times [2022-10-15 18:14:02,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:14:02,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965598646] [2022-10-15 18:14:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:14:02,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:14:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:14:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9520 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 9364 trivial. 0 not checked. [2022-10-15 18:14:02,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:14:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965598646] [2022-10-15 18:14:02,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965598646] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:14:02,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:14:02,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 18:14:02,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590354910] [2022-10-15 18:14:02,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:14:02,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:14:02,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:14:02,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:14:02,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:14:02,710 INFO L87 Difference]: Start difference. First operand 782 states and 944 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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 18:14:02,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:14:02,724 INFO L93 Difference]: Finished difference Result 814 states and 976 transitions. [2022-10-15 18:14:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:14:02,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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 618 [2022-10-15 18:14:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:14:02,730 INFO L225 Difference]: With dead ends: 814 [2022-10-15 18:14:02,731 INFO L226 Difference]: Without dead ends: 814 [2022-10-15 18:14:02,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:14:02,732 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:14:02,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:14:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-10-15 18:14:02,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-10-15 18:14:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 812 states have (on average 1.2019704433497538) internal successors, (976), 813 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:14:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 976 transitions. [2022-10-15 18:14:02,752 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 976 transitions. Word has length 618 [2022-10-15 18:14:02,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:14:02,755 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 976 transitions. [2022-10-15 18:14:02,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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 18:14:02,755 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 976 transitions. [2022-10-15 18:14:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-10-15 18:14:02,773 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:14:02,773 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:14:02,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-15 18:14:02,774 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:14:02,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:14:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash -770166986, now seen corresponding path program 1 times [2022-10-15 18:14:02,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:14:02,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004088510] [2022-10-15 18:14:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:14:02,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:14:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:14:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 9520 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 9271 trivial. 0 not checked. [2022-10-15 18:14:04,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:14:04,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004088510] [2022-10-15 18:14:04,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004088510] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:14:04,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:14:04,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 18:14:04,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182714112] [2022-10-15 18:14:04,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:14:04,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 18:14:04,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:14:04,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 18:14:04,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-15 18:14:04,695 INFO L87 Difference]: Start difference. First operand 814 states and 976 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:14:04,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:14:04,814 INFO L93 Difference]: Finished difference Result 1038 states and 1232 transitions. [2022-10-15 18:14:04,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 18:14:04,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 618 [2022-10-15 18:14:04,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:14:04,823 INFO L225 Difference]: With dead ends: 1038 [2022-10-15 18:14:04,823 INFO L226 Difference]: Without dead ends: 1038 [2022-10-15 18:14:04,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-10-15 18:14:04,825 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 22 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:14:04,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 143 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:14:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-10-15 18:14:04,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 910. [2022-10-15 18:14:04,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.1806167400881058) internal successors, (1072), 909 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:14:04,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1072 transitions. [2022-10-15 18:14:04,853 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1072 transitions. Word has length 618 [2022-10-15 18:14:04,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:14:04,855 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1072 transitions. [2022-10-15 18:14:04,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:14:04,855 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1072 transitions. [2022-10-15 18:14:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2022-10-15 18:14:04,887 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:14:04,888 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:14:04,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-15 18:14:04,890 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:14:04,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:14:04,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1208328982, now seen corresponding path program 1 times [2022-10-15 18:14:04,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:14:04,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64575785] [2022-10-15 18:14:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:14:04,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:14:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:14:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 8496 trivial. 0 not checked. [2022-10-15 18:14:09,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:14:09,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64575785] [2022-10-15 18:14:09,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64575785] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:14:09,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585817160] [2022-10-15 18:14:09,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:14:09,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:14:09,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:14:09,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:14:09,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 18:14:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:14:09,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 2048 conjuncts, 34 conjunts are in the unsatisfiable core [2022-10-15 18:14:09,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:14:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 8496 trivial. 0 not checked. [2022-10-15 18:14:09,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:14:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 8496 trivial. 0 not checked. [2022-10-15 18:14:11,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585817160] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:14:11,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:14:11,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2022-10-15 18:14:11,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238304923] [2022-10-15 18:14:11,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:14:11,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-10-15 18:14:11,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:14:11,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-10-15 18:14:11,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2022-10-15 18:14:11,704 INFO L87 Difference]: Start difference. First operand 910 states and 1072 transitions. Second operand has 69 states, 69 states have (on average 4.202898550724638) internal successors, (290), 69 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:14:16,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:14:16,369 INFO L93 Difference]: Finished difference Result 1862 states and 2194 transitions. [2022-10-15 18:14:16,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-10-15 18:14:16,369 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.202898550724638) internal successors, (290), 69 states have internal predecessors, (290), 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 682 [2022-10-15 18:14:16,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:14:16,378 INFO L225 Difference]: With dead ends: 1862 [2022-10-15 18:14:16,378 INFO L226 Difference]: Without dead ends: 1862 [2022-10-15 18:14:16,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1397 GetRequests, 1330 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2022-10-15 18:14:16,381 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 5587 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5587 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-15 18:14:16,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5587 Valid, 1038 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-15 18:14:16,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2022-10-15 18:14:16,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1862. [2022-10-15 18:14:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1860 states have (on average 1.1795698924731184) internal successors, (2194), 1861 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:14:16,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2194 transitions. [2022-10-15 18:14:16,416 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2194 transitions. Word has length 682 [2022-10-15 18:14:16,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:14:16,417 INFO L495 AbstractCegarLoop]: Abstraction has 1862 states and 2194 transitions. [2022-10-15 18:14:16,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.202898550724638) internal successors, (290), 69 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:14:16,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2194 transitions. [2022-10-15 18:14:16,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1397 [2022-10-15 18:14:16,483 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:14:16,483 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:14:16,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 18:14:16,694 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,SelfDestructingSolverStorable13 [2022-10-15 18:14:16,695 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-10-15 18:14:16,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:14:16,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1103288184, now seen corresponding path program 2 times [2022-10-15 18:14:16,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:14:16,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468556555] [2022-10-15 18:14:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:14:16,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:14:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:14:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 45243 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 36597 trivial. 0 not checked. [2022-10-15 18:14:28,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:14:28,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468556555] [2022-10-15 18:14:28,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468556555] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:14:28,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294193295] [2022-10-15 18:14:28,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:14:28,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:14:28,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:14:28,768 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 18:14:28,786 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 18:14:29,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 18:14:29,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:14:29,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 4156 conjuncts, 68 conjunts are in the unsatisfiable core [2022-10-15 18:14:29,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:14:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 45243 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 36597 trivial. 0 not checked. [2022-10-15 18:14:30,233 INFO L328 TraceCheckSpWp]: Computing backward predicates...