/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/recursive/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:10:28,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:10:28,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:10:28,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:10:28,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:10:28,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:10:28,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:10:28,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:10:28,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:10:28,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:10:28,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:10:28,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:10:28,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:10:28,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:10:28,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:10:28,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:10:28,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:10:28,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:10:28,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:10:28,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:10:28,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:10:28,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:10:28,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:10:28,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:10:28,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:10:28,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:10:28,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:10:28,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:10:28,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:10:28,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:10:28,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:10:28,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:10:28,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:10:28,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:10:28,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:10:28,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:10:28,942 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 17:10:28,991 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:10:28,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:10:28,992 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:10:28,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:10:28,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:10:28,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:10:28,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:10:28,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:10:28,998 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:10:28,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:10:28,999 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:10:28,999 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:10:29,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:10:29,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:10:29,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:10:29,000 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:10:29,000 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:10:29,000 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:10:29,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:10:29,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:10:29,001 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:10:29,001 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:10:29,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:10:29,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:10:29,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:10:29,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:10:29,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:10:29,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:10:29,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:10:29,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:10:29,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:10:29,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:10:29,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:10:29,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:10:29,414 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:10:29,415 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:10:29,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2022-10-15 17:10:29,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/597b8cc11/1d9cbce52d224592b9a3c74761653470/FLAGa23862077 [2022-10-15 17:10:30,052 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:10:30,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2022-10-15 17:10:30,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/597b8cc11/1d9cbce52d224592b9a3c74761653470/FLAGa23862077 [2022-10-15 17:10:30,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/597b8cc11/1d9cbce52d224592b9a3c74761653470 [2022-10-15 17:10:30,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:10:30,453 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:10:30,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:10:30,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:10:30,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:10:30,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d1097d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30, skipping insertion in model container [2022-10-15 17:10:30,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:10:30,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:10:30,648 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/recursive/MultCommutative-2.c[970,983] [2022-10-15 17:10:30,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:10:30,662 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:10:30,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2022-10-15 17:10:30,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:10:30,698 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:10:30,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30 WrapperNode [2022-10-15 17:10:30,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:10:30,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:10:30,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:10:30,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:10:30,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,739 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-10-15 17:10:30,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:10:30,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:10:30,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:10:30,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:10:30,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,760 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:10:30,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:10:30,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:10:30,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:10:30,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30" (1/1) ... [2022-10-15 17:10:30,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:10:30,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:10:30,805 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 17:10:30,829 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 17:10:30,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:10:30,877 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-10-15 17:10:30,877 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-10-15 17:10:30,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:10:30,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:10:30,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:10:30,963 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:10:30,967 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:10:31,133 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:10:31,144 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:10:31,148 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 17:10:31,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:10:31 BoogieIcfgContainer [2022-10-15 17:10:31,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:10:31,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:10:31,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:10:31,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:10:31,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:10:30" (1/3) ... [2022-10-15 17:10:31,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1375756a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:10:31, skipping insertion in model container [2022-10-15 17:10:31,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:10:30" (2/3) ... [2022-10-15 17:10:31,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1375756a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:10:31, skipping insertion in model container [2022-10-15 17:10:31,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:10:31" (3/3) ... [2022-10-15 17:10:31,174 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2022-10-15 17:10:31,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:10:31,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 17:10:31,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:10:31,296 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;@4d5506ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:10:31,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 17:10:31,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 17:10:31,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:10:31,312 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:10:31,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:10:31,313 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:10:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:10:31,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1356600, now seen corresponding path program 1 times [2022-10-15 17:10:31,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:10:31,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364404391] [2022-10-15 17:10:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:10:31,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:10:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:31,542 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 17:10:31,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:10:31,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364404391] [2022-10-15 17:10:31,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364404391] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:10:31,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:10:31,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:10:31,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727894836] [2022-10-15 17:10:31,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:10:31,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:10:31,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:10:31,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:10:31,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:10:31,593 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:10:31,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:10:31,628 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2022-10-15 17:10:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:10:31,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 17:10:31,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:10:31,638 INFO L225 Difference]: With dead ends: 23 [2022-10-15 17:10:31,639 INFO L226 Difference]: Without dead ends: 20 [2022-10-15 17:10:31,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:10:31,649 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:10:31,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 40 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:10:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-15 17:10:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-15 17:10:31,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 17:10:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-10-15 17:10:31,701 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 4 [2022-10-15 17:10:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:10:31,701 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-10-15 17:10:31,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:10:31,703 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-10-15 17:10:31,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 17:10:31,705 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:10:31,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:10:31,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:10:31,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:10:31,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:10:31,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1333887444, now seen corresponding path program 1 times [2022-10-15 17:10:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:10:31,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500892877] [2022-10-15 17:10:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:10:31,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:10:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:31,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 17:10:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:32,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-15 17:10:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 17:10:32,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:10:32,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500892877] [2022-10-15 17:10:32,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500892877] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:10:32,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:10:32,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 17:10:32,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732789089] [2022-10-15 17:10:32,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:10:32,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:10:32,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:10:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:10:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:10:32,114 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:10:32,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:10:32,213 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2022-10-15 17:10:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:10:32,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-10-15 17:10:32,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:10:32,220 INFO L225 Difference]: With dead ends: 30 [2022-10-15 17:10:32,220 INFO L226 Difference]: Without dead ends: 28 [2022-10-15 17:10:32,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:10:32,225 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:10:32,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 117 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:10:32,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-15 17:10:32,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-10-15 17:10:32,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-10-15 17:10:32,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-10-15 17:10:32,250 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 20 [2022-10-15 17:10:32,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:10:32,251 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-10-15 17:10:32,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:10:32,252 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2022-10-15 17:10:32,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-15 17:10:32,254 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:10:32,254 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:10:32,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:10:32,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:10:32,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:10:32,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1899585564, now seen corresponding path program 1 times [2022-10-15 17:10:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:10:32,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687573961] [2022-10-15 17:10:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:10:32,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:10:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 17:10:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:32,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-15 17:10:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:32,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:10:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 17:10:32,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:10:32,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687573961] [2022-10-15 17:10:32,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687573961] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:10:32,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226385151] [2022-10-15 17:10:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:10:32,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:32,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:10:32,599 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 17:10:32,600 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 17:10:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:32,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:10:32,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:10:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 17:10:32,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:10:32,899 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 17:10:32,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226385151] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:10:32,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:10:32,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2022-10-15 17:10:32,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962974213] [2022-10-15 17:10:32,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:10:32,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 17:10:32,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:10:32,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 17:10:32,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-10-15 17:10:32,910 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-15 17:10:33,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:10:33,127 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2022-10-15 17:10:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 17:10:33,128 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2022-10-15 17:10:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:10:33,129 INFO L225 Difference]: With dead ends: 35 [2022-10-15 17:10:33,130 INFO L226 Difference]: Without dead ends: 27 [2022-10-15 17:10:33,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-10-15 17:10:33,132 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:10:33,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 112 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:10:33,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-10-15 17:10:33,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-10-15 17:10:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-15 17:10:33,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-10-15 17:10:33,143 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 26 [2022-10-15 17:10:33,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:10:33,143 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-10-15 17:10:33,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-15 17:10:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-10-15 17:10:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-15 17:10:33,145 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:10:33,146 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:10:33,174 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 17:10:33,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:33,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:10:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:10:33,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1698610296, now seen corresponding path program 1 times [2022-10-15 17:10:33,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:10:33,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320817318] [2022-10-15 17:10:33,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:10:33,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:10:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:33,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 17:10:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:33,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 17:10:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 17:10:33,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:10:33,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320817318] [2022-10-15 17:10:33,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320817318] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:10:33,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:10:33,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:10:33,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056346973] [2022-10-15 17:10:33,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:10:33,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:10:33,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:10:33,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:10:33,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:10:33,541 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 17:10:33,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:10:33,595 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-10-15 17:10:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:10:33,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-10-15 17:10:33,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:10:33,597 INFO L225 Difference]: With dead ends: 29 [2022-10-15 17:10:33,598 INFO L226 Difference]: Without dead ends: 27 [2022-10-15 17:10:33,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:10:33,600 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:10:33,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:10:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-10-15 17:10:33,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-10-15 17:10:33,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-15 17:10:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-10-15 17:10:33,608 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 27 [2022-10-15 17:10:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:10:33,609 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-10-15 17:10:33,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 17:10:33,610 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-10-15 17:10:33,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-15 17:10:33,611 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:10:33,612 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:10:33,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:10:33,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:10:33,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:10:33,613 INFO L85 PathProgramCache]: Analyzing trace with hash -997569542, now seen corresponding path program 2 times [2022-10-15 17:10:33,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:10:33,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189055274] [2022-10-15 17:10:33,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:10:33,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:10:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 17:10:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:34,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 17:10:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:34,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 17:10:34,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:10:34,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189055274] [2022-10-15 17:10:34,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189055274] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:10:34,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465553262] [2022-10-15 17:10:34,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:10:34,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:34,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:10:34,370 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 17:10:34,378 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 17:10:34,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:10:34,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:10:34,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-15 17:10:34,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:10:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 17:10:34,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:10:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 17:10:35,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465553262] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:10:35,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:10:35,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 14] total 35 [2022-10-15 17:10:35,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64346158] [2022-10-15 17:10:35,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:10:35,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-15 17:10:35,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:10:35,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-15 17:10:35,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2022-10-15 17:10:35,939 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 35 states, 32 states have (on average 1.5625) internal successors, (50), 24 states have internal predecessors, (50), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2022-10-15 17:10:36,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:10:36,504 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2022-10-15 17:10:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 17:10:36,505 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 1.5625) internal successors, (50), 24 states have internal predecessors, (50), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) Word has length 34 [2022-10-15 17:10:36,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:10:36,507 INFO L225 Difference]: With dead ends: 38 [2022-10-15 17:10:36,507 INFO L226 Difference]: Without dead ends: 36 [2022-10-15 17:10:36,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=235, Invalid=1571, Unknown=0, NotChecked=0, Total=1806 [2022-10-15 17:10:36,509 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 48 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:10:36,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 190 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:10:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-15 17:10:36,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-10-15 17:10:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-10-15 17:10:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-10-15 17:10:36,520 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 34 [2022-10-15 17:10:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:10:36,520 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-10-15 17:10:36,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 1.5625) internal successors, (50), 24 states have internal predecessors, (50), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2022-10-15 17:10:36,521 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-10-15 17:10:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-15 17:10:36,523 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:10:36,523 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:10:36,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-15 17:10:36,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:36,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:10:36,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:10:36,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1724303738, now seen corresponding path program 3 times [2022-10-15 17:10:36,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:10:36,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235931961] [2022-10-15 17:10:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:10:36,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:10:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:36,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 17:10:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:37,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:37,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 17:10:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:37,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 17:10:37,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:10:37,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235931961] [2022-10-15 17:10:37,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235931961] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:10:37,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223279625] [2022-10-15 17:10:37,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:10:37,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:37,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:10:37,470 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 17:10:37,489 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 17:10:37,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-15 17:10:37,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:10:37,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 57 conjunts are in the unsatisfiable core [2022-10-15 17:10:37,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:10:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-15 17:10:38,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:10:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 17:10:39,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223279625] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:10:39,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:10:39,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 20] total 49 [2022-10-15 17:10:39,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945237320] [2022-10-15 17:10:39,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:10:39,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-10-15 17:10:39,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:10:39,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-10-15 17:10:39,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2153, Unknown=0, NotChecked=0, Total=2352 [2022-10-15 17:10:39,589 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 49 states, 45 states have (on average 1.511111111111111) internal successors, (68), 34 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 13 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2022-10-15 17:10:41,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:10:41,151 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2022-10-15 17:10:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-15 17:10:41,152 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 45 states have (on average 1.511111111111111) internal successors, (68), 34 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 13 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) Word has length 41 [2022-10-15 17:10:41,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:10:41,154 INFO L225 Difference]: With dead ends: 63 [2022-10-15 17:10:41,154 INFO L226 Difference]: Without dead ends: 59 [2022-10-15 17:10:41,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=499, Invalid=4057, Unknown=0, NotChecked=0, Total=4556 [2022-10-15 17:10:41,158 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:10:41,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 331 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 17:10:41,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-15 17:10:41,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2022-10-15 17:10:41,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 33 states have internal predecessors, (35), 7 states have call successors, (7), 2 states have call predecessors, (7), 8 states have return successors, (27), 11 states have call predecessors, (27), 7 states have call successors, (27) [2022-10-15 17:10:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 69 transitions. [2022-10-15 17:10:41,172 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 69 transitions. Word has length 41 [2022-10-15 17:10:41,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:10:41,173 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 69 transitions. [2022-10-15 17:10:41,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 45 states have (on average 1.511111111111111) internal successors, (68), 34 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 13 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2022-10-15 17:10:41,173 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 69 transitions. [2022-10-15 17:10:41,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-15 17:10:41,176 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:10:41,176 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:10:41,210 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 17:10:41,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:41,390 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:10:41,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:10:41,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1644979434, now seen corresponding path program 4 times [2022-10-15 17:10:41,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:10:41,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664095461] [2022-10-15 17:10:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:10:41,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:10:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:41,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 17:10:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:41,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 17:10:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:42,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 16 proven. 68 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-15 17:10:42,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:10:42,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664095461] [2022-10-15 17:10:42,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664095461] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:10:42,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273283713] [2022-10-15 17:10:42,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:10:42,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:42,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:10:42,382 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 17:10:42,392 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 17:10:42,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:10:42,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:10:42,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 85 conjunts are in the unsatisfiable core [2022-10-15 17:10:42,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:10:43,194 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-15 17:10:43,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:10:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 20 proven. 80 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-15 17:10:45,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273283713] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:10:45,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:10:45,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 24] total 50 [2022-10-15 17:10:45,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824578710] [2022-10-15 17:10:45,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:10:45,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-10-15 17:10:45,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:10:45,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-10-15 17:10:45,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2268, Unknown=0, NotChecked=0, Total=2450 [2022-10-15 17:10:45,522 INFO L87 Difference]: Start difference. First operand 47 states and 69 transitions. Second operand has 50 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 32 states have internal predecessors, (67), 11 states have call successors, (11), 1 states have call predecessors, (11), 13 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2022-10-15 17:10:47,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:10:47,591 INFO L93 Difference]: Finished difference Result 84 states and 131 transitions. [2022-10-15 17:10:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-15 17:10:47,592 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 32 states have internal predecessors, (67), 11 states have call successors, (11), 1 states have call predecessors, (11), 13 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) Word has length 55 [2022-10-15 17:10:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:10:47,595 INFO L225 Difference]: With dead ends: 84 [2022-10-15 17:10:47,595 INFO L226 Difference]: Without dead ends: 77 [2022-10-15 17:10:47,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 90 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=435, Invalid=4257, Unknown=0, NotChecked=0, Total=4692 [2022-10-15 17:10:47,598 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 84 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:10:47,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 436 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-15 17:10:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-10-15 17:10:47,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 62. [2022-10-15 17:10:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 43 states have internal predecessors, (46), 9 states have call successors, (9), 3 states have call predecessors, (9), 11 states have return successors, (46), 15 states have call predecessors, (46), 9 states have call successors, (46) [2022-10-15 17:10:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 101 transitions. [2022-10-15 17:10:47,625 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 101 transitions. Word has length 55 [2022-10-15 17:10:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:10:47,625 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 101 transitions. [2022-10-15 17:10:47,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 32 states have internal predecessors, (67), 11 states have call successors, (11), 1 states have call predecessors, (11), 13 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2022-10-15 17:10:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 101 transitions. [2022-10-15 17:10:47,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-15 17:10:47,631 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:10:47,632 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:10:47,661 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 17:10:47,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:47,833 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:10:47,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:10:47,834 INFO L85 PathProgramCache]: Analyzing trace with hash 50219044, now seen corresponding path program 1 times [2022-10-15 17:10:47,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:10:47,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234596763] [2022-10-15 17:10:47,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:10:47,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:10:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:47,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 17:10:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:47,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:47,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 17:10:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:47,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:10:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:47,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:47,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:47,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 36 proven. 11 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-10-15 17:10:47,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:10:47,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234596763] [2022-10-15 17:10:47,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234596763] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:10:47,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916191313] [2022-10-15 17:10:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:10:47,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:47,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:10:48,000 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 17:10:48,002 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 17:10:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:48,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 17:10:48,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:10:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-10-15 17:10:48,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:10:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-10-15 17:10:48,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916191313] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:10:48,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:10:48,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2022-10-15 17:10:48,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685405220] [2022-10-15 17:10:48,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:10:48,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 17:10:48,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:10:48,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 17:10:48,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:10:48,267 INFO L87 Difference]: Start difference. First operand 62 states and 101 transitions. Second operand has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-10-15 17:10:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:10:48,325 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2022-10-15 17:10:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:10:48,326 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 61 [2022-10-15 17:10:48,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:10:48,334 INFO L225 Difference]: With dead ends: 54 [2022-10-15 17:10:48,335 INFO L226 Difference]: Without dead ends: 50 [2022-10-15 17:10:48,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:10:48,337 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 22 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:10:48,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 70 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:10:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-15 17:10:48,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-10-15 17:10:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.088235294117647) internal successors, (37), 35 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (21), 11 states have call predecessors, (21), 7 states have call successors, (21) [2022-10-15 17:10:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2022-10-15 17:10:48,348 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 61 [2022-10-15 17:10:48,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:10:48,349 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2022-10-15 17:10:48,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-10-15 17:10:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2022-10-15 17:10:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-15 17:10:48,350 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:10:48,350 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:10:48,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-15 17:10:48,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:48,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:10:48,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:10:48,566 INFO L85 PathProgramCache]: Analyzing trace with hash 791249260, now seen corresponding path program 5 times [2022-10-15 17:10:48,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:10:48,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628302042] [2022-10-15 17:10:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:10:48,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:10:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:48,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 17:10:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 17:10:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:49,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:49,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 14 proven. 70 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-15 17:10:49,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:10:49,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628302042] [2022-10-15 17:10:49,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628302042] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:10:49,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593269573] [2022-10-15 17:10:49,531 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 17:10:49,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:49,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:10:49,533 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 17:10:49,548 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 17:10:49,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-10-15 17:10:49,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:10:49,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 85 conjunts are in the unsatisfiable core [2022-10-15 17:10:49,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:10:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-15 17:10:50,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:10:52,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593269573] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:10:52,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:10:52,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 34 [2022-10-15 17:10:52,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950661417] [2022-10-15 17:10:52,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:10:52,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-15 17:10:52,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:10:52,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-15 17:10:52,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2361, Unknown=0, NotChecked=0, Total=2550 [2022-10-15 17:10:52,815 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand has 34 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 22 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 11 states have return successors, (12), 12 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-15 17:10:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:10:53,652 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2022-10-15 17:10:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-15 17:10:53,652 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 22 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 11 states have return successors, (12), 12 states have call predecessors, (12), 5 states have call successors, (12) Word has length 55 [2022-10-15 17:10:53,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:10:53,653 INFO L225 Difference]: With dead ends: 60 [2022-10-15 17:10:53,653 INFO L226 Difference]: Without dead ends: 56 [2022-10-15 17:10:53,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=346, Invalid=3436, Unknown=0, NotChecked=0, Total=3782 [2022-10-15 17:10:53,656 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:10:53,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 252 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:10:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-15 17:10:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2022-10-15 17:10:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 36 states have internal predecessors, (38), 8 states have call successors, (8), 3 states have call predecessors, (8), 8 states have return successors, (22), 12 states have call predecessors, (22), 8 states have call successors, (22) [2022-10-15 17:10:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2022-10-15 17:10:53,664 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 55 [2022-10-15 17:10:53,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:10:53,665 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2022-10-15 17:10:53,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 22 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 11 states have return successors, (12), 12 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-15 17:10:53,665 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2022-10-15 17:10:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-10-15 17:10:53,666 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:10:53,667 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:10:53,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-15 17:10:53,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:53,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:10:53,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:10:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1406624478, now seen corresponding path program 6 times [2022-10-15 17:10:53,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:10:53,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904425533] [2022-10-15 17:10:53,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:10:53,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:10:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:54,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 17:10:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:54,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:54,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:54,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 17:10:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:54,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:55,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:10:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:10:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-10-15 17:10:55,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:10:55,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904425533] [2022-10-15 17:10:55,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904425533] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:10:55,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581554013] [2022-10-15 17:10:55,336 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-15 17:10:55,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:10:55,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:10:55,338 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 17:10:55,339 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 17:10:55,413 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-10-15 17:10:55,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:10:55,418 WARN L261 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 109 conjunts are in the unsatisfiable core [2022-10-15 17:10:55,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:10:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-10-15 17:10:56,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:10:59,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581554013] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:10:59,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:10:59,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18] total 40 [2022-10-15 17:10:59,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279813751] [2022-10-15 17:10:59,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:10:59,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-10-15 17:10:59,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:10:59,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-10-15 17:10:59,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3432, Unknown=0, NotChecked=0, Total=3660 [2022-10-15 17:10:59,879 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand has 40 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 25 states have internal predecessors, (47), 5 states have call successors, (5), 1 states have call predecessors, (5), 14 states have return successors, (15), 15 states have call predecessors, (15), 5 states have call successors, (15) [2022-10-15 17:11:00,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:11:00,861 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2022-10-15 17:11:00,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-15 17:11:00,862 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 25 states have internal predecessors, (47), 5 states have call successors, (5), 1 states have call predecessors, (5), 14 states have return successors, (15), 15 states have call predecessors, (15), 5 states have call successors, (15) Word has length 69 [2022-10-15 17:11:00,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:11:00,863 INFO L225 Difference]: With dead ends: 64 [2022-10-15 17:11:00,863 INFO L226 Difference]: Without dead ends: 62 [2022-10-15 17:11:00,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=427, Invalid=4685, Unknown=0, NotChecked=0, Total=5112 [2022-10-15 17:11:00,869 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:11:00,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 360 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:11:00,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-10-15 17:11:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2022-10-15 17:11:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 38 states have internal predecessors, (40), 8 states have call successors, (8), 3 states have call predecessors, (8), 9 states have return successors, (27), 13 states have call predecessors, (27), 8 states have call successors, (27) [2022-10-15 17:11:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 75 transitions. [2022-10-15 17:11:00,884 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 75 transitions. Word has length 69 [2022-10-15 17:11:00,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:11:00,885 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 75 transitions. [2022-10-15 17:11:00,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 25 states have internal predecessors, (47), 5 states have call successors, (5), 1 states have call predecessors, (5), 14 states have return successors, (15), 15 states have call predecessors, (15), 5 states have call successors, (15) [2022-10-15 17:11:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 75 transitions. [2022-10-15 17:11:00,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-15 17:11:00,886 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:11:00,886 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:11:00,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-10-15 17:11:01,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:11:01,099 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:11:01,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:11:01,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1205224804, now seen corresponding path program 7 times [2022-10-15 17:11:01,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:11:01,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070207476] [2022-10-15 17:11:01,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:11:01,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:11:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 17:11:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:01,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:01,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:01,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:01,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 17:11:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:02,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:02,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:02,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:02,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 28 proven. 146 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-10-15 17:11:02,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:11:02,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070207476] [2022-10-15 17:11:02,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070207476] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:11:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489231955] [2022-10-15 17:11:02,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-15 17:11:02,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:11:02,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:11:02,779 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 17:11:02,781 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 17:11:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:02,850 WARN L261 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 121 conjunts are in the unsatisfiable core [2022-10-15 17:11:02,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:11:03,911 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 5 proven. 134 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-10-15 17:11:03,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:11:07,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489231955] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:11:07,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:11:07,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20] total 44 [2022-10-15 17:11:07,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280157139] [2022-10-15 17:11:07,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:11:07,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-10-15 17:11:07,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:11:07,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-10-15 17:11:07,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=4172, Unknown=0, NotChecked=0, Total=4422 [2022-10-15 17:11:07,915 INFO L87 Difference]: Start difference. First operand 55 states and 75 transitions. Second operand has 44 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 27 states have internal predecessors, (51), 5 states have call successors, (5), 1 states have call predecessors, (5), 16 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) [2022-10-15 17:11:09,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:11:09,260 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2022-10-15 17:11:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-15 17:11:09,261 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 27 states have internal predecessors, (51), 5 states have call successors, (5), 1 states have call predecessors, (5), 16 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) Word has length 76 [2022-10-15 17:11:09,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:11:09,263 INFO L225 Difference]: With dead ends: 70 [2022-10-15 17:11:09,263 INFO L226 Difference]: Without dead ends: 68 [2022-10-15 17:11:09,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 109 SyntacticMatches, 7 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=499, Invalid=5821, Unknown=0, NotChecked=0, Total=6320 [2022-10-15 17:11:09,266 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:11:09,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 475 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 17:11:09,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-10-15 17:11:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2022-10-15 17:11:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 40 states have internal predecessors, (42), 8 states have call successors, (8), 3 states have call predecessors, (8), 10 states have return successors, (32), 14 states have call predecessors, (32), 8 states have call successors, (32) [2022-10-15 17:11:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 82 transitions. [2022-10-15 17:11:09,276 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 82 transitions. Word has length 76 [2022-10-15 17:11:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:11:09,276 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 82 transitions. [2022-10-15 17:11:09,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 27 states have internal predecessors, (51), 5 states have call successors, (5), 1 states have call predecessors, (5), 16 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) [2022-10-15 17:11:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 82 transitions. [2022-10-15 17:11:09,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-15 17:11:09,278 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:11:09,278 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:11:09,305 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 17:11:09,492 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,SelfDestructingSolverStorable10 [2022-10-15 17:11:09,493 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:11:09,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:11:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1260613456, now seen corresponding path program 8 times [2022-10-15 17:11:09,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:11:09,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917352581] [2022-10-15 17:11:09,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:11:09,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:11:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:09,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 17:11:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:10,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:10,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:10,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:10,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 17:11:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:10,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:10,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:11,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:11,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:11,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 17:11:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:11:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 178 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-10-15 17:11:11,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:11:11,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917352581] [2022-10-15 17:11:11,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917352581] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:11:11,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400310375] [2022-10-15 17:11:11,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:11:11,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:11:11,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:11:11,407 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 17:11:11,409 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 17:11:11,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:11:11,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:11:11,483 WARN L261 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 133 conjunts are in the unsatisfiable core [2022-10-15 17:11:11,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:11:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 6 proven. 165 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-10-15 17:11:12,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:11:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 35 proven. 253 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-15 17:11:18,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400310375] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:11:18,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:11:18,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 22, 37] total 74 [2022-10-15 17:11:18,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165795914] [2022-10-15 17:11:18,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:11:18,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-10-15 17:11:18,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:11:18,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-10-15 17:11:18,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=5124, Unknown=1, NotChecked=0, Total=5402 [2022-10-15 17:11:18,392 INFO L87 Difference]: Start difference. First operand 58 states and 82 transitions. Second operand has 74 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 45 states have internal predecessors, (98), 15 states have call successors, (15), 1 states have call predecessors, (15), 21 states have return successors, (30), 29 states have call predecessors, (30), 15 states have call successors, (30) [2022-10-15 17:11:21,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:11:21,331 INFO L93 Difference]: Finished difference Result 86 states and 123 transitions. [2022-10-15 17:11:21,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 17:11:21,332 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 45 states have internal predecessors, (98), 15 states have call successors, (15), 1 states have call predecessors, (15), 21 states have return successors, (30), 29 states have call predecessors, (30), 15 states have call successors, (30) Word has length 83 [2022-10-15 17:11:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:11:21,336 INFO L225 Difference]: With dead ends: 86 [2022-10-15 17:11:21,337 INFO L226 Difference]: Without dead ends: 82 [2022-10-15 17:11:21,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 136 SyntacticMatches, 9 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2145 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=702, Invalid=8609, Unknown=1, NotChecked=0, Total=9312 [2022-10-15 17:11:21,340 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:11:21,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 670 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2304 Invalid, 0 Unknown, 12 Unchecked, 1.7s Time] [2022-10-15 17:11:21,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-10-15 17:11:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2022-10-15 17:11:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.08) internal successors, (54), 51 states have internal predecessors, (54), 9 states have call successors, (9), 4 states have call predecessors, (9), 14 states have return successors, (41), 18 states have call predecessors, (41), 9 states have call successors, (41) [2022-10-15 17:11:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 104 transitions. [2022-10-15 17:11:21,351 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 104 transitions. Word has length 83 [2022-10-15 17:11:21,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:11:21,352 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 104 transitions. [2022-10-15 17:11:21,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 45 states have internal predecessors, (98), 15 states have call successors, (15), 1 states have call predecessors, (15), 21 states have return successors, (30), 29 states have call predecessors, (30), 15 states have call successors, (30) [2022-10-15 17:11:21,352 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 104 transitions. [2022-10-15 17:11:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-15 17:11:21,354 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:11:21,354 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:11:21,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0