/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/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 18:18:42,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 18:18:42,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 18:18:42,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 18:18:42,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 18:18:42,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 18:18:42,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 18:18:42,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 18:18:42,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 18:18:42,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 18:18:42,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 18:18:42,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 18:18:42,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 18:18:42,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 18:18:42,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 18:18:42,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 18:18:42,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 18:18:42,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 18:18:42,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 18:18:42,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 18:18:42,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 18:18:42,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 18:18:42,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 18:18:42,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 18:18:42,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 18:18:42,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 18:18:42,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 18:18:42,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 18:18:42,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 18:18:42,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 18:18:42,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 18:18:42,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 18:18:42,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 18:18:42,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 18:18:42,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 18:18:42,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 18:18:42,478 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 18:18:42,540 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 18:18:42,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 18:18:42,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 18:18:42,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 18:18:42,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 18:18:42,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 18:18:42,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 18:18:42,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 18:18:42,547 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 18:18:42,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 18:18:42,548 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 18:18:42,548 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 18:18:42,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 18:18:42,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 18:18:42,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 18:18:42,549 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 18:18:42,549 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 18:18:42,550 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 18:18:42,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 18:18:42,550 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 18:18:42,550 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 18:18:42,551 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 18:18:42,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 18:18:42,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 18:18:42,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 18:18:42,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:18:42,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 18:18:42,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 18:18:42,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 18:18:42,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 18:18:42,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 18:18:42,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 18:18:42,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 18:18:42,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 18:18:42,978 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 18:18:42,979 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 18:18:42,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/lu.cmp.c [2022-10-15 18:18:43,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68bec6b5/d4e11490af8843128fef45822b10dfd6/FLAG4a54f10b1 [2022-10-15 18:18:43,711 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 18:18:43,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/lu.cmp.c [2022-10-15 18:18:43,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68bec6b5/d4e11490af8843128fef45822b10dfd6/FLAG4a54f10b1 [2022-10-15 18:18:43,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68bec6b5/d4e11490af8843128fef45822b10dfd6 [2022-10-15 18:18:43,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 18:18:43,751 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 18:18:43,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 18:18:43,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 18:18:43,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 18:18:43,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:18:43" (1/1) ... [2022-10-15 18:18:43,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4af100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:43, skipping insertion in model container [2022-10-15 18:18:43,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:18:43" (1/1) ... [2022-10-15 18:18:43,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 18:18:43,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 18:18:43,977 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/loops/lu.cmp.c[318,331] [2022-10-15 18:18:44,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:18:44,053 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 18:18:44,068 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/loops/lu.cmp.c[318,331] [2022-10-15 18:18:44,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:18:44,110 INFO L208 MainTranslator]: Completed translation [2022-10-15 18:18:44,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44 WrapperNode [2022-10-15 18:18:44,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 18:18:44,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 18:18:44,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 18:18:44,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 18:18:44,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44" (1/1) ... [2022-10-15 18:18:44,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44" (1/1) ... [2022-10-15 18:18:44,223 INFO L138 Inliner]: procedures = 17, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 224 [2022-10-15 18:18:44,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 18:18:44,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 18:18:44,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 18:18:44,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 18:18:44,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44" (1/1) ... [2022-10-15 18:18:44,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44" (1/1) ... [2022-10-15 18:18:44,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44" (1/1) ... [2022-10-15 18:18:44,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44" (1/1) ... [2022-10-15 18:18:44,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44" (1/1) ... [2022-10-15 18:18:44,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44" (1/1) ... [2022-10-15 18:18:44,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44" (1/1) ... [2022-10-15 18:18:44,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44" (1/1) ... [2022-10-15 18:18:44,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 18:18:44,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 18:18:44,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 18:18:44,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 18:18:44,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44" (1/1) ... [2022-10-15 18:18:44,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:18:44,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:44,368 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 18:18:44,392 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 18:18:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 18:18:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 18:18:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 18:18:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-15 18:18:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-15 18:18:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 18:18:44,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 18:18:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 18:18:44,612 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 18:18:44,615 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 18:18:45,337 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 18:18:45,347 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 18:18:45,347 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-10-15 18:18:45,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:18:45 BoogieIcfgContainer [2022-10-15 18:18:45,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 18:18:45,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 18:18:45,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 18:18:45,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 18:18:45,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:18:43" (1/3) ... [2022-10-15 18:18:45,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490c744d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:18:45, skipping insertion in model container [2022-10-15 18:18:45,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:44" (2/3) ... [2022-10-15 18:18:45,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490c744d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:18:45, skipping insertion in model container [2022-10-15 18:18:45,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:18:45" (3/3) ... [2022-10-15 18:18:45,366 INFO L112 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2022-10-15 18:18:45,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 18:18:45,391 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-10-15 18:18:45,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 18:18:45,494 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;@70aa490e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 18:18:45,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-10-15 18:18:45,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 85 states have (on average 2.0352941176470587) internal successors, (173), 145 states have internal predecessors, (173), 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 18:18:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 18:18:45,517 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:45,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 18:18:45,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:45,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 28698921, now seen corresponding path program 1 times [2022-10-15 18:18:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:45,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328253011] [2022-10-15 18:18:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:45,949 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 18:18:45,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:45,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328253011] [2022-10-15 18:18:45,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328253011] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:45,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:45,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 18:18:45,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903261306] [2022-10-15 18:18:45,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:45,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:18:45,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:46,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:18:46,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:46,020 INFO L87 Difference]: Start difference. First operand has 146 states, 85 states have (on average 2.0352941176470587) internal successors, (173), 145 states have internal predecessors, (173), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:46,308 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2022-10-15 18:18:46,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:18:46,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 18:18:46,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:46,331 INFO L225 Difference]: With dead ends: 128 [2022-10-15 18:18:46,331 INFO L226 Difference]: Without dead ends: 126 [2022-10-15 18:18:46,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 18:18:46,339 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 131 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:46,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 82 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:18:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-10-15 18:18:46,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-10-15 18:18:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 84 states have (on average 1.6785714285714286) internal successors, (141), 125 states have internal predecessors, (141), 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 18:18:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2022-10-15 18:18:46,411 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 5 [2022-10-15 18:18:46,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:46,413 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2022-10-15 18:18:46,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:46,415 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2022-10-15 18:18:46,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 18:18:46,416 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:46,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 18:18:46,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 18:18:46,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:46,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:46,419 INFO L85 PathProgramCache]: Analyzing trace with hash 28698922, now seen corresponding path program 1 times [2022-10-15 18:18:46,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:46,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313723615] [2022-10-15 18:18:46,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:46,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:46,656 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 18:18:46,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:46,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313723615] [2022-10-15 18:18:46,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313723615] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:46,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:46,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 18:18:46,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382466973] [2022-10-15 18:18:46,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:46,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 18:18:46,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:46,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 18:18:46,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 18:18:46,667 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:46,881 INFO L93 Difference]: Finished difference Result 163 states and 182 transitions. [2022-10-15 18:18:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 18:18:46,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 18:18:46,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:46,888 INFO L225 Difference]: With dead ends: 163 [2022-10-15 18:18:46,888 INFO L226 Difference]: Without dead ends: 163 [2022-10-15 18:18:46,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 18:18:46,892 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 99 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:46,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 202 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:18:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-10-15 18:18:46,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 140. [2022-10-15 18:18:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 98 states have (on average 1.6428571428571428) internal successors, (161), 139 states have internal predecessors, (161), 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 18:18:46,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 161 transitions. [2022-10-15 18:18:46,920 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 161 transitions. Word has length 5 [2022-10-15 18:18:46,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:46,920 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 161 transitions. [2022-10-15 18:18:46,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:46,921 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 161 transitions. [2022-10-15 18:18:46,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 18:18:46,921 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:46,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:46,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 18:18:46,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:46,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:46,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1809437226, now seen corresponding path program 1 times [2022-10-15 18:18:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:46,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542501046] [2022-10-15 18:18:46,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:46,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:47,024 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 18:18:47,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:47,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542501046] [2022-10-15 18:18:47,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542501046] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:47,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:47,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 18:18:47,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567577315] [2022-10-15 18:18:47,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:47,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:18:47,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:47,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:18:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:47,027 INFO L87 Difference]: Start difference. First operand 140 states and 161 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:47,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:47,077 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2022-10-15 18:18:47,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:18:47,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-15 18:18:47,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:47,080 INFO L225 Difference]: With dead ends: 151 [2022-10-15 18:18:47,080 INFO L226 Difference]: Without dead ends: 151 [2022-10-15 18:18:47,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:18:47,082 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 22 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:47,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 250 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:18:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-10-15 18:18:47,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 140. [2022-10-15 18:18:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 98 states have (on average 1.6326530612244898) internal successors, (160), 139 states have internal predecessors, (160), 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 18:18:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 160 transitions. [2022-10-15 18:18:47,091 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 160 transitions. Word has length 7 [2022-10-15 18:18:47,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:47,092 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 160 transitions. [2022-10-15 18:18:47,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 160 transitions. [2022-10-15 18:18:47,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 18:18:47,093 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:47,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:47,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 18:18:47,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:47,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:47,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1809824293, now seen corresponding path program 1 times [2022-10-15 18:18:47,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:47,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001692883] [2022-10-15 18:18:47,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:47,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:47,160 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 18:18:47,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:47,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001692883] [2022-10-15 18:18:47,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001692883] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:47,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:47,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 18:18:47,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864338832] [2022-10-15 18:18:47,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:47,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 18:18:47,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:47,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 18:18:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:18:47,164 INFO L87 Difference]: Start difference. First operand 140 states and 160 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:47,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:47,222 INFO L93 Difference]: Finished difference Result 159 states and 179 transitions. [2022-10-15 18:18:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 18:18:47,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-15 18:18:47,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:47,224 INFO L225 Difference]: With dead ends: 159 [2022-10-15 18:18:47,224 INFO L226 Difference]: Without dead ends: 159 [2022-10-15 18:18:47,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:18:47,237 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 152 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:47,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 253 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:18:47,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-10-15 18:18:47,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 141. [2022-10-15 18:18:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 99 states have (on average 1.6161616161616161) internal successors, (160), 140 states have internal predecessors, (160), 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 18:18:47,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 160 transitions. [2022-10-15 18:18:47,261 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 160 transitions. Word has length 7 [2022-10-15 18:18:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:47,261 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 160 transitions. [2022-10-15 18:18:47,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 160 transitions. [2022-10-15 18:18:47,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 18:18:47,263 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:47,263 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:47,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 18:18:47,263 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash 685078844, now seen corresponding path program 1 times [2022-10-15 18:18:47,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:47,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259748559] [2022-10-15 18:18:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:47,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:47,547 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 18:18:47,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:47,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259748559] [2022-10-15 18:18:47,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259748559] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:18:47,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041248028] [2022-10-15 18:18:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:47,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:47,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:47,553 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 18:18:47,576 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 18:18:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:47,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 18:18:47,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:47,850 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 18:18:47,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:18:47,997 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 18:18:47,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041248028] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:18:47,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:18:47,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-10-15 18:18:47,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751615699] [2022-10-15 18:18:47,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:18:47,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 18:18:47,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:48,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 18:18:48,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-10-15 18:18:48,000 INFO L87 Difference]: Start difference. First operand 141 states and 160 transitions. Second operand has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:48,746 INFO L93 Difference]: Finished difference Result 231 states and 258 transitions. [2022-10-15 18:18:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 18:18:48,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 18:18:48,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:48,749 INFO L225 Difference]: With dead ends: 231 [2022-10-15 18:18:48,749 INFO L226 Difference]: Without dead ends: 231 [2022-10-15 18:18:48,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2022-10-15 18:18:48,751 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 776 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:48,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 454 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 18:18:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-10-15 18:18:48,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 171. [2022-10-15 18:18:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 132 states have (on average 1.5075757575757576) internal successors, (199), 170 states have internal predecessors, (199), 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 18:18:48,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 199 transitions. [2022-10-15 18:18:48,760 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 199 transitions. Word has length 14 [2022-10-15 18:18:48,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:48,761 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 199 transitions. [2022-10-15 18:18:48,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:48,761 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 199 transitions. [2022-10-15 18:18:48,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 18:18:48,762 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:48,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:48,797 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 18:18:48,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:48,977 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:48,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1230736823, now seen corresponding path program 1 times [2022-10-15 18:18:48,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:48,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752649405] [2022-10-15 18:18:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:48,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:18:49,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:49,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752649405] [2022-10-15 18:18:49,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752649405] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:49,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:49,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 18:18:49,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704198899] [2022-10-15 18:18:49,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:49,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 18:18:49,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:49,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 18:18:49,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:18:49,079 INFO L87 Difference]: Start difference. First operand 171 states and 199 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:49,118 INFO L93 Difference]: Finished difference Result 174 states and 198 transitions. [2022-10-15 18:18:49,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 18:18:49,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-15 18:18:49,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:49,121 INFO L225 Difference]: With dead ends: 174 [2022-10-15 18:18:49,121 INFO L226 Difference]: Without dead ends: 174 [2022-10-15 18:18:49,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 18:18:49,123 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 145 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:49,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 271 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:18:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-10-15 18:18:49,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2022-10-15 18:18:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 132 states have (on average 1.5) internal successors, (198), 170 states have internal predecessors, (198), 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 18:18:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 198 transitions. [2022-10-15 18:18:49,130 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 198 transitions. Word has length 16 [2022-10-15 18:18:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:49,131 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 198 transitions. [2022-10-15 18:18:49,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 198 transitions. [2022-10-15 18:18:49,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-15 18:18:49,132 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:49,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:49,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 18:18:49,133 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:49,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash -501859103, now seen corresponding path program 1 times [2022-10-15 18:18:49,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:49,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109912196] [2022-10-15 18:18:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:49,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:49,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:49,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109912196] [2022-10-15 18:18:49,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109912196] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:18:49,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117901900] [2022-10-15 18:18:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:49,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:49,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:49,224 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 18:18:49,226 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 18:18:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:49,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 18:18:49,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:49,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:18:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:49,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117901900] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:18:49,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:18:49,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-15 18:18:49,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491570375] [2022-10-15 18:18:49,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:18:49,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 18:18:49,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:49,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 18:18:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-10-15 18:18:49,429 INFO L87 Difference]: Start difference. First operand 171 states and 198 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:49,521 INFO L93 Difference]: Finished difference Result 227 states and 257 transitions. [2022-10-15 18:18:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 18:18:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-10-15 18:18:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:49,523 INFO L225 Difference]: With dead ends: 227 [2022-10-15 18:18:49,523 INFO L226 Difference]: Without dead ends: 227 [2022-10-15 18:18:49,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2022-10-15 18:18:49,525 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 502 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:49,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 379 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:18:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-10-15 18:18:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 224. [2022-10-15 18:18:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 185 states have (on average 1.3891891891891892) internal successors, (257), 223 states have internal predecessors, (257), 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 18:18:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 257 transitions. [2022-10-15 18:18:49,534 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 257 transitions. Word has length 17 [2022-10-15 18:18:49,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:49,535 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 257 transitions. [2022-10-15 18:18:49,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:49,535 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 257 transitions. [2022-10-15 18:18:49,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 18:18:49,537 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:49,537 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:49,581 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 18:18:49,751 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,SelfDestructingSolverStorable6 [2022-10-15 18:18:49,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:49,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:49,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1403618411, now seen corresponding path program 1 times [2022-10-15 18:18:49,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:49,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40580402] [2022-10-15 18:18:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:49,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:50,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:50,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40580402] [2022-10-15 18:18:50,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40580402] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:18:50,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276637387] [2022-10-15 18:18:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:50,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:50,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:50,128 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 18:18:50,150 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 18:18:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:50,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-15 18:18:50,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:50,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:18:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:50,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276637387] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:18:50,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:18:50,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-10-15 18:18:50,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688935248] [2022-10-15 18:18:50,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:18:50,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-15 18:18:50,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:50,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-15 18:18:50,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2022-10-15 18:18:50,938 INFO L87 Difference]: Start difference. First operand 224 states and 257 transitions. Second operand has 23 states, 22 states have (on average 4.363636363636363) internal successors, (96), 22 states have internal predecessors, (96), 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 18:18:52,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:52,674 INFO L93 Difference]: Finished difference Result 447 states and 502 transitions. [2022-10-15 18:18:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-15 18:18:52,675 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.363636363636363) internal successors, (96), 22 states have internal predecessors, (96), 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 18:18:52,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:52,678 INFO L225 Difference]: With dead ends: 447 [2022-10-15 18:18:52,678 INFO L226 Difference]: Without dead ends: 447 [2022-10-15 18:18:52,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=485, Invalid=1237, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 18:18:52,680 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1158 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:52,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1039 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-15 18:18:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-10-15 18:18:52,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 310. [2022-10-15 18:18:52,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 271 states have (on average 1.3321033210332103) internal successors, (361), 309 states have internal predecessors, (361), 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 18:18:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 361 transitions. [2022-10-15 18:18:52,701 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 361 transitions. Word has length 32 [2022-10-15 18:18:52,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:52,701 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 361 transitions. [2022-10-15 18:18:52,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.363636363636363) internal successors, (96), 22 states have internal predecessors, (96), 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 18:18:52,702 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 361 transitions. [2022-10-15 18:18:52,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-15 18:18:52,703 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:52,703 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:52,745 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 18:18:52,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:52,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:52,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:52,920 INFO L85 PathProgramCache]: Analyzing trace with hash -606621870, now seen corresponding path program 1 times [2022-10-15 18:18:52,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:52,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199623398] [2022-10-15 18:18:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:52,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:53,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:53,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199623398] [2022-10-15 18:18:53,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199623398] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:18:53,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186317920] [2022-10-15 18:18:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:53,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:53,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:53,080 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 18:18:53,102 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 18:18:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:53,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 18:18:53,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:53,297 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:53,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:18:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:53,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186317920] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:18:53,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:18:53,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-10-15 18:18:53,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224303749] [2022-10-15 18:18:53,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:18:53,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-15 18:18:53,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:53,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-15 18:18:53,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=232, Unknown=0, NotChecked=0, Total=380 [2022-10-15 18:18:53,394 INFO L87 Difference]: Start difference. First operand 310 states and 361 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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 18:18:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:53,540 INFO L93 Difference]: Finished difference Result 396 states and 452 transitions. [2022-10-15 18:18:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 18:18:53,541 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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 18:18:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:53,543 INFO L225 Difference]: With dead ends: 396 [2022-10-15 18:18:53,543 INFO L226 Difference]: Without dead ends: 396 [2022-10-15 18:18:53,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2022-10-15 18:18:53,545 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 302 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:53,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 757 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:18:53,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-10-15 18:18:53,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 391. [2022-10-15 18:18:53,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 352 states have (on average 1.2840909090909092) internal successors, (452), 390 states have internal predecessors, (452), 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 18:18:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 452 transitions. [2022-10-15 18:18:53,556 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 452 transitions. Word has length 35 [2022-10-15 18:18:53,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:53,557 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 452 transitions. [2022-10-15 18:18:53,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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 18:18:53,557 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 452 transitions. [2022-10-15 18:18:53,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-15 18:18:53,559 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:53,559 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:53,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 18:18:53,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:53,773 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:53,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:53,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1681236728, now seen corresponding path program 2 times [2022-10-15 18:18:53,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:53,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915024580] [2022-10-15 18:18:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:53,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-10-15 18:18:53,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:53,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915024580] [2022-10-15 18:18:53,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915024580] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:53,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:53,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-15 18:18:53,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379260212] [2022-10-15 18:18:53,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:53,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:18:53,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:53,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:18:53,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:53,906 INFO L87 Difference]: Start difference. First operand 391 states and 452 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:53,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:53,973 INFO L93 Difference]: Finished difference Result 388 states and 448 transitions. [2022-10-15 18:18:53,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:18:53,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-10-15 18:18:53,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:53,976 INFO L225 Difference]: With dead ends: 388 [2022-10-15 18:18:53,977 INFO L226 Difference]: Without dead ends: 388 [2022-10-15 18:18:53,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 18:18:53,978 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 112 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:53,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 91 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:18:53,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-10-15 18:18:53,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2022-10-15 18:18:53,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 352 states have (on average 1.2727272727272727) internal successors, (448), 387 states have internal predecessors, (448), 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 18:18:53,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 448 transitions. [2022-10-15 18:18:53,989 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 448 transitions. Word has length 47 [2022-10-15 18:18:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:53,989 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 448 transitions. [2022-10-15 18:18:53,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 448 transitions. [2022-10-15 18:18:53,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-15 18:18:53,991 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:53,991 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:53,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 18:18:53,991 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:53,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:53,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1681236727, now seen corresponding path program 1 times [2022-10-15 18:18:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:53,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645267408] [2022-10-15 18:18:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:53,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-10-15 18:18:54,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:54,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645267408] [2022-10-15 18:18:54,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645267408] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:54,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:54,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:18:54,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592425420] [2022-10-15 18:18:54,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:54,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 18:18:54,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:54,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 18:18:54,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:18:54,236 INFO L87 Difference]: Start difference. First operand 388 states and 448 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:54,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:54,354 INFO L93 Difference]: Finished difference Result 389 states and 447 transitions. [2022-10-15 18:18:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 18:18:54,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-10-15 18:18:54,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:54,357 INFO L225 Difference]: With dead ends: 389 [2022-10-15 18:18:54,357 INFO L226 Difference]: Without dead ends: 389 [2022-10-15 18:18:54,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 18:18:54,358 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 40 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:54,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 255 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:18:54,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-10-15 18:18:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 388. [2022-10-15 18:18:54,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 352 states have (on average 1.2698863636363635) internal successors, (447), 387 states have internal predecessors, (447), 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 18:18:54,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 447 transitions. [2022-10-15 18:18:54,369 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 447 transitions. Word has length 47 [2022-10-15 18:18:54,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:54,370 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 447 transitions. [2022-10-15 18:18:54,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:54,370 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 447 transitions. [2022-10-15 18:18:54,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-15 18:18:54,372 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:54,373 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:54,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-15 18:18:54,373 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:54,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:54,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1727138536, now seen corresponding path program 1 times [2022-10-15 18:18:54,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:54,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158730006] [2022-10-15 18:18:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:54,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-10-15 18:18:54,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:54,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158730006] [2022-10-15 18:18:54,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158730006] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:18:54,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549180878] [2022-10-15 18:18:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:54,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:54,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:54,517 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 18:18:54,530 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 18:18:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:54,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 18:18:54,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-10-15 18:18:54,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:18:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-10-15 18:18:54,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549180878] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:18:54,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:18:54,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-10-15 18:18:54,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758535560] [2022-10-15 18:18:54,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:18:54,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 18:18:54,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:54,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 18:18:54,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-10-15 18:18:54,882 INFO L87 Difference]: Start difference. First operand 388 states and 447 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:54,970 INFO L93 Difference]: Finished difference Result 481 states and 553 transitions. [2022-10-15 18:18:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 18:18:54,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-10-15 18:18:54,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:54,974 INFO L225 Difference]: With dead ends: 481 [2022-10-15 18:18:54,975 INFO L226 Difference]: Without dead ends: 481 [2022-10-15 18:18:54,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-10-15 18:18:54,976 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 118 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:54,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 371 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:18:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-10-15 18:18:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 472. [2022-10-15 18:18:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 436 states have (on average 1.2637614678899083) internal successors, (551), 471 states have internal predecessors, (551), 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 18:18:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 551 transitions. [2022-10-15 18:18:54,987 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 551 transitions. Word has length 53 [2022-10-15 18:18:54,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:54,988 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 551 transitions. [2022-10-15 18:18:54,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 551 transitions. [2022-10-15 18:18:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-15 18:18:54,989 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:54,989 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:55,026 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 18:18:55,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-15 18:18:55,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:55,205 INFO L85 PathProgramCache]: Analyzing trace with hash 682828169, now seen corresponding path program 2 times [2022-10-15 18:18:55,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:55,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399785854] [2022-10-15 18:18:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:55,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 235 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:55,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:55,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399785854] [2022-10-15 18:18:55,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399785854] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:18:55,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899263714] [2022-10-15 18:18:55,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:18:55,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:55,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:55,599 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 18:18:55,623 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 18:18:55,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 18:18:55,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:18:55,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 18:18:55,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-15 18:18:55,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 18:18:55,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899263714] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:55,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 18:18:55,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2022-10-15 18:18:55,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150946382] [2022-10-15 18:18:55,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:55,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 18:18:55,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:55,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 18:18:55,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=269, Unknown=0, NotChecked=0, Total=462 [2022-10-15 18:18:55,909 INFO L87 Difference]: Start difference. First operand 472 states and 551 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 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 18:18:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:56,015 INFO L93 Difference]: Finished difference Result 428 states and 480 transitions. [2022-10-15 18:18:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 18:18:56,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 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 68 [2022-10-15 18:18:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:56,019 INFO L225 Difference]: With dead ends: 428 [2022-10-15 18:18:56,019 INFO L226 Difference]: Without dead ends: 428 [2022-10-15 18:18:56,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=269, Unknown=0, NotChecked=0, Total=462 [2022-10-15 18:18:56,020 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 413 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:56,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 149 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:18:56,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-10-15 18:18:56,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 364. [2022-10-15 18:18:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 328 states have (on average 1.2652439024390243) internal successors, (415), 363 states have internal predecessors, (415), 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 18:18:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 415 transitions. [2022-10-15 18:18:56,030 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 415 transitions. Word has length 68 [2022-10-15 18:18:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:56,031 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 415 transitions. [2022-10-15 18:18:56,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 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 18:18:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 415 transitions. [2022-10-15 18:18:56,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-10-15 18:18:56,032 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:56,033 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:56,076 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 18:18:56,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:56,247 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1227919313, now seen corresponding path program 1 times [2022-10-15 18:18:56,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:56,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9281570] [2022-10-15 18:18:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 176 proven. 60 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-10-15 18:18:56,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:56,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9281570] [2022-10-15 18:18:56,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9281570] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:18:56,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888475653] [2022-10-15 18:18:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:56,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:56,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:56,485 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 18:18:56,502 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 18:18:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:56,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 18:18:56,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 176 proven. 60 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-10-15 18:18:56,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:18:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 176 proven. 60 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-10-15 18:18:56,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888475653] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:18:56,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:18:56,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-10-15 18:18:56,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319819434] [2022-10-15 18:18:56,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:18:56,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 18:18:56,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:56,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 18:18:56,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 18:18:56,863 INFO L87 Difference]: Start difference. First operand 364 states and 415 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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 18:18:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:56,970 INFO L93 Difference]: Finished difference Result 389 states and 432 transitions. [2022-10-15 18:18:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 18:18:56,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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 81 [2022-10-15 18:18:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:56,973 INFO L225 Difference]: With dead ends: 389 [2022-10-15 18:18:56,973 INFO L226 Difference]: Without dead ends: 389 [2022-10-15 18:18:56,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-15 18:18:56,974 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 52 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:56,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 615 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:18:56,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-10-15 18:18:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 335. [2022-10-15 18:18:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 299 states have (on average 1.2709030100334449) internal successors, (380), 334 states have internal predecessors, (380), 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 18:18:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 380 transitions. [2022-10-15 18:18:56,983 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 380 transitions. Word has length 81 [2022-10-15 18:18:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:56,984 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 380 transitions. [2022-10-15 18:18:56,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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 18:18:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 380 transitions. [2022-10-15 18:18:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-15 18:18:56,985 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:56,985 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:57,027 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 18:18:57,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:57,199 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:57,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:57,200 INFO L85 PathProgramCache]: Analyzing trace with hash -894553512, now seen corresponding path program 1 times [2022-10-15 18:18:57,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:57,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486610753] [2022-10-15 18:18:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:57,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:57,503 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-10-15 18:18:57,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:57,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486610753] [2022-10-15 18:18:57,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486610753] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:18:57,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023229223] [2022-10-15 18:18:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:57,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:57,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:57,505 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 18:18:57,510 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 18:18:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:57,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 18:18:57,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-10-15 18:18:57,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:18:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-10-15 18:18:57,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023229223] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:18:57,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:18:57,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-10-15 18:18:57,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170705514] [2022-10-15 18:18:57,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:18:57,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 18:18:57,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:57,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 18:18:57,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-10-15 18:18:57,919 INFO L87 Difference]: Start difference. First operand 335 states and 380 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 18:18:58,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:58,049 INFO L93 Difference]: Finished difference Result 557 states and 632 transitions. [2022-10-15 18:18:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 18:18:58,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 92 [2022-10-15 18:18:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:58,052 INFO L225 Difference]: With dead ends: 557 [2022-10-15 18:18:58,052 INFO L226 Difference]: Without dead ends: 557 [2022-10-15 18:18:58,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-10-15 18:18:58,054 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 513 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:58,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 637 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:18:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-10-15 18:18:58,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 392. [2022-10-15 18:18:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 356 states have (on average 1.2556179775280898) internal successors, (447), 391 states have internal predecessors, (447), 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 18:18:58,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 447 transitions. [2022-10-15 18:18:58,064 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 447 transitions. Word has length 92 [2022-10-15 18:18:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:58,065 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 447 transitions. [2022-10-15 18:18:58,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 18:18:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 447 transitions. [2022-10-15 18:18:58,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-15 18:18:58,066 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:58,066 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-15 18:18:58,110 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 18:18:58,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-15 18:18:58,279 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:18:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:58,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1961350047, now seen corresponding path program 1 times [2022-10-15 18:18:58,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:58,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023863780] [2022-10-15 18:18:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:58,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-10-15 18:18:58,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:58,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023863780] [2022-10-15 18:18:58,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023863780] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:18:58,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736707734] [2022-10-15 18:18:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:58,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:58,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:58,747 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 18:18:58,765 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 18:18:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:58,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 18:18:58,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-10-15 18:18:59,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:18:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-10-15 18:19:00,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736707734] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:19:00,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:19:00,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-10-15 18:19:00,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578075402] [2022-10-15 18:19:00,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:19:00,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 18:19:00,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:19:00,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 18:19:00,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-10-15 18:19:00,002 INFO L87 Difference]: Start difference. First operand 392 states and 447 transitions. Second operand has 11 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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 18:19:00,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:19:00,357 INFO L93 Difference]: Finished difference Result 395 states and 446 transitions. [2022-10-15 18:19:00,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 18:19:00,358 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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 93 [2022-10-15 18:19:00,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:19:00,360 INFO L225 Difference]: With dead ends: 395 [2022-10-15 18:19:00,361 INFO L226 Difference]: Without dead ends: 395 [2022-10-15 18:19:00,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-10-15 18:19:00,362 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 293 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:19:00,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 377 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:19:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-10-15 18:19:00,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2022-10-15 18:19:00,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 358 states have (on average 1.2458100558659218) internal successors, (446), 392 states have internal predecessors, (446), 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 18:19:00,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 446 transitions. [2022-10-15 18:19:00,371 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 446 transitions. Word has length 93 [2022-10-15 18:19:00,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:19:00,372 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 446 transitions. [2022-10-15 18:19:00,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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 18:19:00,372 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 446 transitions. [2022-10-15 18:19:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-10-15 18:19:00,373 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:19:00,373 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 10, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-10-15 18:19:00,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 18:19:00,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-15 18:19:00,589 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:19:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:19:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1334291728, now seen corresponding path program 2 times [2022-10-15 18:19:00,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:19:00,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285827541] [2022-10-15 18:19:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:00,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:19:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-10-15 18:19:01,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:19:01,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285827541] [2022-10-15 18:19:01,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285827541] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:19:01,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547028164] [2022-10-15 18:19:01,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:19:01,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:01,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:19:01,150 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:19:01,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 18:19:01,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 18:19:01,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:19:01,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 18:19:01,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:19:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 240 proven. 26 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-10-15 18:19:02,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:19:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 238 proven. 28 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-10-15 18:19:03,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547028164] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:19:03,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:19:03,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-10-15 18:19:03,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940640781] [2022-10-15 18:19:03,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:19:03,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 18:19:03,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:19:03,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 18:19:03,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-10-15 18:19:03,447 INFO L87 Difference]: Start difference. First operand 393 states and 446 transitions. Second operand has 17 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 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 18:19:04,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:19:04,203 INFO L93 Difference]: Finished difference Result 385 states and 428 transitions. [2022-10-15 18:19:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 18:19:04,204 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 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 97 [2022-10-15 18:19:04,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:19:04,206 INFO L225 Difference]: With dead ends: 385 [2022-10-15 18:19:04,206 INFO L226 Difference]: Without dead ends: 385 [2022-10-15 18:19:04,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2022-10-15 18:19:04,208 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 383 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 18:19:04,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 622 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 18:19:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-10-15 18:19:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 384. [2022-10-15 18:19:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 349 states have (on average 1.2263610315186246) internal successors, (428), 383 states have internal predecessors, (428), 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 18:19:04,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 428 transitions. [2022-10-15 18:19:04,217 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 428 transitions. Word has length 97 [2022-10-15 18:19:04,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:19:04,218 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 428 transitions. [2022-10-15 18:19:04,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 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 18:19:04,218 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 428 transitions. [2022-10-15 18:19:04,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-10-15 18:19:04,219 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:19:04,219 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-10-15 18:19:04,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 18:19:04,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-15 18:19:04,433 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:19:04,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:19:04,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1369779846, now seen corresponding path program 3 times [2022-10-15 18:19:04,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:19:04,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496896843] [2022-10-15 18:19:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:04,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:19:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 424 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-10-15 18:19:05,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:19:05,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496896843] [2022-10-15 18:19:05,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496896843] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:19:05,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858882244] [2022-10-15 18:19:05,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 18:19:05,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:05,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:19:05,028 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:19:05,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 18:19:05,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 18:19:05,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:19:05,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 18:19:05,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:19:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 168 proven. 14 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-10-15 18:19:06,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:19:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-10-15 18:19:06,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858882244] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:19:06,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:19:06,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2022-10-15 18:19:06,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954500366] [2022-10-15 18:19:06,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:19:06,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-15 18:19:06,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:19:06,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-15 18:19:06,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-10-15 18:19:06,653 INFO L87 Difference]: Start difference. First operand 384 states and 428 transitions. Second operand has 21 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 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 18:19:08,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:19:08,148 INFO L93 Difference]: Finished difference Result 397 states and 427 transitions. [2022-10-15 18:19:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-15 18:19:08,149 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 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 109 [2022-10-15 18:19:08,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:19:08,151 INFO L225 Difference]: With dead ends: 397 [2022-10-15 18:19:08,152 INFO L226 Difference]: Without dead ends: 397 [2022-10-15 18:19:08,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=511, Invalid=1295, Unknown=0, NotChecked=0, Total=1806 [2022-10-15 18:19:08,154 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 571 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 18:19:08,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 545 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 18:19:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-10-15 18:19:08,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 377. [2022-10-15 18:19:08,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 343 states have (on average 1.186588921282799) internal successors, (407), 376 states have internal predecessors, (407), 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 18:19:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 407 transitions. [2022-10-15 18:19:08,164 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 407 transitions. Word has length 109 [2022-10-15 18:19:08,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:19:08,165 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 407 transitions. [2022-10-15 18:19:08,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 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 18:19:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 407 transitions. [2022-10-15 18:19:08,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-10-15 18:19:08,171 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:19:08,172 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 21, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:19:08,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 18:19:08,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-15 18:19:08,385 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:19:08,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:19:08,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1058236189, now seen corresponding path program 2 times [2022-10-15 18:19:08,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:19:08,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248465959] [2022-10-15 18:19:08,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:08,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:19:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 1423 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-10-15 18:19:08,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:19:08,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248465959] [2022-10-15 18:19:08,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248465959] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:19:08,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711591934] [2022-10-15 18:19:08,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:19:08,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:08,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:19:08,911 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:19:08,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 18:19:09,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 18:19:09,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:19:09,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 18:19:09,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:19:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2022-10-15 18:19:09,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 18:19:09,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711591934] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:19:09,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 18:19:09,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-10-15 18:19:09,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878360641] [2022-10-15 18:19:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:19:09,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 18:19:09,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:19:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 18:19:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-15 18:19:09,375 INFO L87 Difference]: Start difference. First operand 377 states and 407 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 18:19:09,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:19:09,431 INFO L93 Difference]: Finished difference Result 383 states and 413 transitions. [2022-10-15 18:19:09,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 18:19:09,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 188 [2022-10-15 18:19:09,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:19:09,434 INFO L225 Difference]: With dead ends: 383 [2022-10-15 18:19:09,434 INFO L226 Difference]: Without dead ends: 381 [2022-10-15 18:19:09,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-15 18:19:09,436 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 8 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:19:09,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 296 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2022-10-15 18:19:09,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-10-15 18:19:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2022-10-15 18:19:09,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 343 states have (on average 1.183673469387755) internal successors, (406), 376 states have internal predecessors, (406), 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 18:19:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 406 transitions. [2022-10-15 18:19:09,445 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 406 transitions. Word has length 188 [2022-10-15 18:19:09,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:19:09,446 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 406 transitions. [2022-10-15 18:19:09,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 18:19:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 406 transitions. [2022-10-15 18:19:09,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-10-15 18:19:09,448 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:19:09,449 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 21, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:19:09,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-15 18:19:09,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:09,662 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:19:09,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:19:09,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1058231168, now seen corresponding path program 1 times [2022-10-15 18:19:09,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:19:09,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477219921] [2022-10-15 18:19:09,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:09,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:19:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 1423 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-10-15 18:19:10,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:19:10,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477219921] [2022-10-15 18:19:10,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477219921] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:19:10,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561803397] [2022-10-15 18:19:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:10,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:10,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:19:10,150 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:19:10,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-15 18:19:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:10,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 18:19:10,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:19:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 1423 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-10-15 18:19:10,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:19:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 1423 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-10-15 18:19:11,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561803397] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:19:11,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:19:11,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-10-15 18:19:11,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008557593] [2022-10-15 18:19:11,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:19:11,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 18:19:11,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:19:11,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 18:19:11,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=158, Unknown=0, NotChecked=0, Total=272 [2022-10-15 18:19:11,253 INFO L87 Difference]: Start difference. First operand 377 states and 406 transitions. Second operand has 17 states, 17 states have (on average 11.941176470588236) internal successors, (203), 17 states have internal predecessors, (203), 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 18:19:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:19:11,375 INFO L93 Difference]: Finished difference Result 440 states and 474 transitions. [2022-10-15 18:19:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 18:19:11,376 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 11.941176470588236) internal successors, (203), 17 states have internal predecessors, (203), 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 188 [2022-10-15 18:19:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:19:11,379 INFO L225 Difference]: With dead ends: 440 [2022-10-15 18:19:11,379 INFO L226 Difference]: Without dead ends: 440 [2022-10-15 18:19:11,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=158, Unknown=0, NotChecked=0, Total=272 [2022-10-15 18:19:11,380 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 185 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:19:11,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 603 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:19:11,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-10-15 18:19:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 437. [2022-10-15 18:19:11,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 403 states have (on average 1.173697270471464) internal successors, (473), 436 states have internal predecessors, (473), 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 18:19:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 473 transitions. [2022-10-15 18:19:11,390 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 473 transitions. Word has length 188 [2022-10-15 18:19:11,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:19:11,391 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 473 transitions. [2022-10-15 18:19:11,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.941176470588236) internal successors, (203), 17 states have internal predecessors, (203), 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 18:19:11,392 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 473 transitions. [2022-10-15 18:19:11,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-10-15 18:19:11,395 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:19:11,395 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 27, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2022-10-15 18:19:11,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-15 18:19:11,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-10-15 18:19:11,608 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:19:11,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:19:11,609 INFO L85 PathProgramCache]: Analyzing trace with hash -15234122, now seen corresponding path program 2 times [2022-10-15 18:19:11,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:19:11,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29476817] [2022-10-15 18:19:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:11,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:19:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2827 backedges. 916 proven. 8 refuted. 0 times theorem prover too weak. 1903 trivial. 0 not checked. [2022-10-15 18:19:12,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:19:12,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29476817] [2022-10-15 18:19:12,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29476817] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:19:12,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680479865] [2022-10-15 18:19:12,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:19:12,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:12,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:19:12,137 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:19:12,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-15 18:19:12,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 18:19:12,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:19:12,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 18:19:12,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:19:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2827 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 1903 trivial. 0 not checked. [2022-10-15 18:19:12,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:19:12,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2827 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 1903 trivial. 0 not checked. [2022-10-15 18:19:12,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680479865] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:19:12,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:19:12,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-10-15 18:19:12,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865968637] [2022-10-15 18:19:12,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:19:12,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 18:19:12,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:19:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 18:19:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-10-15 18:19:12,913 INFO L87 Difference]: Start difference. First operand 437 states and 473 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 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 18:19:12,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:19:12,979 INFO L93 Difference]: Finished difference Result 435 states and 470 transitions. [2022-10-15 18:19:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 18:19:12,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 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 224 [2022-10-15 18:19:12,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:19:12,983 INFO L225 Difference]: With dead ends: 435 [2022-10-15 18:19:12,983 INFO L226 Difference]: Without dead ends: 435 [2022-10-15 18:19:12,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-10-15 18:19:12,984 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 603 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:19:12,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 340 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:19:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-10-15 18:19:12,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2022-10-15 18:19:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 402 states have (on average 1.1691542288557213) internal successors, (470), 434 states have internal predecessors, (470), 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 18:19:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 470 transitions. [2022-10-15 18:19:12,996 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 470 transitions. Word has length 224 [2022-10-15 18:19:12,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:19:12,996 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 470 transitions. [2022-10-15 18:19:12,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 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 18:19:12,997 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 470 transitions. [2022-10-15 18:19:13,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-10-15 18:19:13,000 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:19:13,000 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 27, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1] [2022-10-15 18:19:13,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-15 18:19:13,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:13,215 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:19:13,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:19:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash -472252733, now seen corresponding path program 2 times [2022-10-15 18:19:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:19:13,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466613455] [2022-10-15 18:19:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:13,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:19:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2835 backedges. 1200 proven. 1134 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2022-10-15 18:19:13,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:19:13,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466613455] [2022-10-15 18:19:13,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466613455] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:19:13,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211500254] [2022-10-15 18:19:13,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:19:13,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:13,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:19:13,978 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:19:14,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-15 18:19:14,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 18:19:14,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:19:14,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 18:19:14,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:19:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2835 backedges. 1200 proven. 1134 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2022-10-15 18:19:14,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:19:15,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2835 backedges. 1200 proven. 1134 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2022-10-15 18:19:15,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211500254] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:19:15,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:19:15,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2022-10-15 18:19:15,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764456957] [2022-10-15 18:19:15,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:19:15,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 18:19:15,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:19:15,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 18:19:15,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-10-15 18:19:15,217 INFO L87 Difference]: Start difference. First operand 435 states and 470 transitions. Second operand has 14 states, 14 states have (on average 8.0) internal successors, (112), 14 states have internal predecessors, (112), 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 18:19:15,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:19:15,689 INFO L93 Difference]: Finished difference Result 486 states and 518 transitions. [2022-10-15 18:19:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-15 18:19:15,690 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.0) internal successors, (112), 14 states have internal predecessors, (112), 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 225 [2022-10-15 18:19:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:19:15,693 INFO L225 Difference]: With dead ends: 486 [2022-10-15 18:19:15,693 INFO L226 Difference]: Without dead ends: 486 [2022-10-15 18:19:15,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 443 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-10-15 18:19:15,695 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 58 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 18:19:15,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1314 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 18:19:15,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-10-15 18:19:15,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 429. [2022-10-15 18:19:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 396 states have (on average 1.1641414141414141) internal successors, (461), 428 states have internal predecessors, (461), 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 18:19:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 461 transitions. [2022-10-15 18:19:15,709 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 461 transitions. Word has length 225 [2022-10-15 18:19:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:19:15,710 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 461 transitions. [2022-10-15 18:19:15,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.0) internal successors, (112), 14 states have internal predecessors, (112), 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 18:19:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 461 transitions. [2022-10-15 18:19:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-10-15 18:19:15,713 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:19:15,713 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 26, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2022-10-15 18:19:15,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-15 18:19:15,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:15,929 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:19:15,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:19:15,929 INFO L85 PathProgramCache]: Analyzing trace with hash 503567906, now seen corresponding path program 3 times [2022-10-15 18:19:15,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:19:15,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586228913] [2022-10-15 18:19:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:15,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:19:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2844 backedges. 308 proven. 2148 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-10-15 18:19:16,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:19:16,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586228913] [2022-10-15 18:19:16,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586228913] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:19:16,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351202154] [2022-10-15 18:19:16,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 18:19:16,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:16,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:19:16,701 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:19:16,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-15 18:19:16,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 18:19:16,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:19:16,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 18:19:16,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:19:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2844 backedges. 7 proven. 932 refuted. 0 times theorem prover too weak. 1905 trivial. 0 not checked. [2022-10-15 18:19:18,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:19:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2844 backedges. 0 proven. 939 refuted. 0 times theorem prover too weak. 1905 trivial. 0 not checked. [2022-10-15 18:19:19,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351202154] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:19:19,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:19:19,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 22 [2022-10-15 18:19:19,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431292161] [2022-10-15 18:19:19,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:19:19,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-15 18:19:19,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:19:19,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-15 18:19:19,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-10-15 18:19:19,806 INFO L87 Difference]: Start difference. First operand 429 states and 461 transitions. Second operand has 22 states, 22 states have (on average 7.954545454545454) internal successors, (175), 22 states have internal predecessors, (175), 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 18:19:21,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:19:21,673 INFO L93 Difference]: Finished difference Result 464 states and 491 transitions. [2022-10-15 18:19:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-15 18:19:21,674 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.954545454545454) internal successors, (175), 22 states have internal predecessors, (175), 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 228 [2022-10-15 18:19:21,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:19:21,677 INFO L225 Difference]: With dead ends: 464 [2022-10-15 18:19:21,677 INFO L226 Difference]: Without dead ends: 464 [2022-10-15 18:19:21,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=433, Invalid=1637, Unknown=0, NotChecked=0, Total=2070 [2022-10-15 18:19:21,679 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 893 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:19:21,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1102 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-15 18:19:21,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-10-15 18:19:21,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 419. [2022-10-15 18:19:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 387 states have (on average 1.152454780361757) internal successors, (446), 418 states have internal predecessors, (446), 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 18:19:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 446 transitions. [2022-10-15 18:19:21,690 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 446 transitions. Word has length 228 [2022-10-15 18:19:21,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:19:21,690 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 446 transitions. [2022-10-15 18:19:21,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.954545454545454) internal successors, (175), 22 states have internal predecessors, (175), 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 18:19:21,691 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 446 transitions. [2022-10-15 18:19:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-10-15 18:19:21,695 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:19:21,695 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 36, 31, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:19:21,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-15 18:19:21,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-10-15 18:19:21,908 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:19:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:19:21,909 INFO L85 PathProgramCache]: Analyzing trace with hash 20349310, now seen corresponding path program 2 times [2022-10-15 18:19:21,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:19:21,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251856930] [2022-10-15 18:19:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:21,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:19:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4137 backedges. 177 proven. 3480 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-10-15 18:19:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:19:22,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251856930] [2022-10-15 18:19:22,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251856930] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:19:22,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470960213] [2022-10-15 18:19:22,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:19:22,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:22,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:19:22,954 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:19:22,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-15 18:19:23,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 18:19:23,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:19:23,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 18:19:23,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:19:25,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:19:25,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-10-15 18:19:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4137 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4137 trivial. 0 not checked. [2022-10-15 18:19:25,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 18:19:25,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470960213] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:19:25,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 18:19:25,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 17 [2022-10-15 18:19:25,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13807232] [2022-10-15 18:19:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:19:25,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 18:19:25,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:19:25,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 18:19:25,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-10-15 18:19:25,960 INFO L87 Difference]: Start difference. First operand 419 states and 446 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 18:19:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:19:26,157 INFO L93 Difference]: Finished difference Result 460 states and 492 transitions. [2022-10-15 18:19:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 18:19:26,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 280 [2022-10-15 18:19:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:19:26,160 INFO L225 Difference]: With dead ends: 460 [2022-10-15 18:19:26,160 INFO L226 Difference]: Without dead ends: 460 [2022-10-15 18:19:26,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-10-15 18:19:26,161 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 209 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:19:26,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 99 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:19:26,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-10-15 18:19:26,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 434. [2022-10-15 18:19:26,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 402 states have (on average 1.1616915422885572) internal successors, (467), 433 states have internal predecessors, (467), 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 18:19:26,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 467 transitions. [2022-10-15 18:19:26,172 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 467 transitions. Word has length 280 [2022-10-15 18:19:26,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:19:26,172 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 467 transitions. [2022-10-15 18:19:26,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 18:19:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 467 transitions. [2022-10-15 18:19:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-10-15 18:19:26,177 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:19:26,177 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 36, 31, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:19:26,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-15 18:19:26,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:26,391 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:19:26,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:19:26,392 INFO L85 PathProgramCache]: Analyzing trace with hash 630830324, now seen corresponding path program 1 times [2022-10-15 18:19:26,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:19:26,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566292856] [2022-10-15 18:19:26,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:26,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:19:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4137 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4137 trivial. 0 not checked. [2022-10-15 18:19:26,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:19:26,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566292856] [2022-10-15 18:19:26,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566292856] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:19:26,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:19:26,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 18:19:26,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502073412] [2022-10-15 18:19:26,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:19:26,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 18:19:26,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:19:26,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 18:19:26,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 18:19:26,882 INFO L87 Difference]: Start difference. First operand 434 states and 467 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 18:19:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:19:27,012 INFO L93 Difference]: Finished difference Result 455 states and 486 transitions. [2022-10-15 18:19:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 18:19:27,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 281 [2022-10-15 18:19:27,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:19:27,015 INFO L225 Difference]: With dead ends: 455 [2022-10-15 18:19:27,015 INFO L226 Difference]: Without dead ends: 455 [2022-10-15 18:19:27,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 18:19:27,016 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 294 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:19:27,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 164 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:19:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-10-15 18:19:27,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 434. [2022-10-15 18:19:27,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 402 states have (on average 1.1592039800995024) internal successors, (466), 433 states have internal predecessors, (466), 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 18:19:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 466 transitions. [2022-10-15 18:19:27,034 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 466 transitions. Word has length 281 [2022-10-15 18:19:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:19:27,034 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 466 transitions. [2022-10-15 18:19:27,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 18:19:27,035 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 466 transitions. [2022-10-15 18:19:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-10-15 18:19:27,037 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:19:27,037 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 36, 31, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:19:27,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-10-15 18:19:27,038 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:19:27,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:19:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1877634654, now seen corresponding path program 1 times [2022-10-15 18:19:27,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:19:27,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733497263] [2022-10-15 18:19:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:27,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:19:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4137 backedges. 177 proven. 3480 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-10-15 18:19:28,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:19:28,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733497263] [2022-10-15 18:19:28,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733497263] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:19:28,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370536898] [2022-10-15 18:19:28,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:28,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:28,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:19:28,039 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:19:28,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-15 18:19:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:28,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-15 18:19:28,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:19:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4137 backedges. 177 proven. 3480 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-10-15 18:19:29,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:19:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4137 backedges. 177 proven. 3480 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-10-15 18:19:30,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370536898] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:19:30,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:19:30,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 20 [2022-10-15 18:19:30,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651373919] [2022-10-15 18:19:30,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:19:30,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-15 18:19:30,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:19:30,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-15 18:19:30,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-10-15 18:19:30,124 INFO L87 Difference]: Start difference. First operand 434 states and 466 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 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 18:19:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:19:31,595 INFO L93 Difference]: Finished difference Result 524 states and 556 transitions. [2022-10-15 18:19:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-15 18:19:31,596 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 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 287 [2022-10-15 18:19:31,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:19:31,599 INFO L225 Difference]: With dead ends: 524 [2022-10-15 18:19:31,599 INFO L226 Difference]: Without dead ends: 524 [2022-10-15 18:19:31,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 565 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2022-10-15 18:19:31,601 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 74 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:19:31,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2504 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-15 18:19:31,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-10-15 18:19:31,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 467. [2022-10-15 18:19:31,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 435 states have (on average 1.1471264367816092) internal successors, (499), 466 states have internal predecessors, (499), 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 18:19:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 499 transitions. [2022-10-15 18:19:31,612 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 499 transitions. Word has length 287 [2022-10-15 18:19:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:19:31,612 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 499 transitions. [2022-10-15 18:19:31,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 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 18:19:31,613 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 499 transitions. [2022-10-15 18:19:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-10-15 18:19:31,615 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:19:31,615 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 36, 30, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:19:31,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-10-15 18:19:31,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:19:31,829 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:19:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:19:31,830 INFO L85 PathProgramCache]: Analyzing trace with hash 159929701, now seen corresponding path program 2 times [2022-10-15 18:19:31,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:19:31,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487616124] [2022-10-15 18:19:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:31,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:19:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:19:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4152 trivial. 0 not checked. [2022-10-15 18:19:32,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:19:32,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487616124] [2022-10-15 18:19:32,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487616124] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:19:32,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:19:32,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 18:19:32,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358871588] [2022-10-15 18:19:32,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:19:32,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 18:19:32,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:19:32,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 18:19:32,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:19:32,615 INFO L87 Difference]: Start difference. First operand 467 states and 499 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:19:32,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:19:32,688 INFO L93 Difference]: Finished difference Result 466 states and 498 transitions. [2022-10-15 18:19:32,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 18:19:32,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2022-10-15 18:19:32,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:19:32,691 INFO L225 Difference]: With dead ends: 466 [2022-10-15 18:19:32,691 INFO L226 Difference]: Without dead ends: 463 [2022-10-15 18:19:32,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:19:32,692 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 97 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:19:32,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 164 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:19:32,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-10-15 18:19:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2022-10-15 18:19:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 432 states have (on average 1.1412037037037037) internal successors, (493), 462 states have internal predecessors, (493), 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 18:19:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 493 transitions. [2022-10-15 18:19:32,702 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 493 transitions. Word has length 290 [2022-10-15 18:19:32,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:19:32,703 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 493 transitions. [2022-10-15 18:19:32,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:19:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 493 transitions. [2022-10-15 18:19:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-10-15 18:19:32,706 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:19:32,706 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 36, 30, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:19:32,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-10-15 18:19:32,706 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2022-10-15 18:19:32,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:19:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash 159925512, now seen corresponding path program 1 times [2022-10-15 18:19:32,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:19:32,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215900963] [2022-10-15 18:19:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:19:32,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms