/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/reducercommutativity/max60-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:15:05,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:15:05,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:15:05,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:15:05,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:15:05,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:15:05,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:15:05,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:15:05,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:15:05,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:15:05,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:15:05,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-10-15 17:15:05,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:15:05,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:15:05,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:15:05,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:15:05,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:15:05,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:15:05,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:15:05,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:15:05,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:15:05,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:15:05,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:15:05,978 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 17:15:06,006 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:15:06,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:15:06,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:15:06,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:15:06,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:15:06,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:15:06,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:15:06,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:15:06,009 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:15:06,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:15:06,010 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:15:06,010 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:15:06,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:15:06,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:15:06,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:15:06,011 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:15:06,011 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:15:06,011 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:15:06,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:15:06,012 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:15:06,012 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:15:06,012 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:15:06,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:15:06,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:15:06,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:15:06,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:15:06,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:15:06,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:15:06,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:15:06,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:15:06,014 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:15:06,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:15:06,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:15:06,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:15:06,447 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:15:06,449 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:15:06,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/max60-1.i [2022-10-15 17:15:06,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68e423aa/9f3bb8513ab44069b8365f9b1a2f78d2/FLAGc86ca5ebe [2022-10-15 17:15:07,174 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:15:07,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max60-1.i [2022-10-15 17:15:07,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68e423aa/9f3bb8513ab44069b8365f9b1a2f78d2/FLAGc86ca5ebe [2022-10-15 17:15:07,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68e423aa/9f3bb8513ab44069b8365f9b1a2f78d2 [2022-10-15 17:15:07,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:15:07,559 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:15:07,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:15:07,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:15:07,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:15:07,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe97a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07, skipping insertion in model container [2022-10-15 17:15:07,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:15:07,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:15:07,802 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/reducercommutativity/max60-1.i[1180,1193] [2022-10-15 17:15:07,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:15:07,815 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:15:07,838 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/reducercommutativity/max60-1.i[1180,1193] [2022-10-15 17:15:07,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:15:07,856 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:15:07,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07 WrapperNode [2022-10-15 17:15:07,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:15:07,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:15:07,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:15:07,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:15:07,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,901 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-10-15 17:15:07,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:15:07,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:15:07,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:15:07,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:15:07,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:15:07,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:15:07,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:15:07,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:15:07,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07" (1/1) ... [2022-10-15 17:15:07,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:15:07,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:07,981 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 17:15:08,001 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 17:15:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:15:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-10-15 17:15:08,052 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-10-15 17:15:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:15:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:15:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:15:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:15:08,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:15:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:15:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:15:08,138 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:15:08,141 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:15:08,626 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:15:08,640 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:15:08,640 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 17:15:08,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:15:08 BoogieIcfgContainer [2022-10-15 17:15:08,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:15:08,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:15:08,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:15:08,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:15:08,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:15:07" (1/3) ... [2022-10-15 17:15:08,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b67e5f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:15:08, skipping insertion in model container [2022-10-15 17:15:08,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:07" (2/3) ... [2022-10-15 17:15:08,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b67e5f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:15:08, skipping insertion in model container [2022-10-15 17:15:08,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:15:08" (3/3) ... [2022-10-15 17:15:08,662 INFO L112 eAbstractionObserver]: Analyzing ICFG max60-1.i [2022-10-15 17:15:08,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:15:08,689 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-10-15 17:15:08,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:15:08,813 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;@e71006c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:15:08,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-10-15 17:15:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 56 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:08,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:15:08,845 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:08,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:15:08,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:08,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:08,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1778701704, now seen corresponding path program 1 times [2022-10-15 17:15:08,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:08,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025254788] [2022-10-15 17:15:08,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:08,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:09,320 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 17:15:09,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:09,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025254788] [2022-10-15 17:15:09,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025254788] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:09,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:09,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:15:09,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250552464] [2022-10-15 17:15:09,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:09,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:15:09,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:09,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:15:09,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:15:09,369 INFO L87 Difference]: Start difference. First operand has 61 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 56 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:09,530 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2022-10-15 17:15:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:15:09,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:15:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:09,548 INFO L225 Difference]: With dead ends: 51 [2022-10-15 17:15:09,548 INFO L226 Difference]: Without dead ends: 49 [2022-10-15 17:15:09,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:15:09,557 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 55 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:09,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 68 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-10-15 17:15:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-10-15 17:15:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:09,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2022-10-15 17:15:09,610 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 6 [2022-10-15 17:15:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:09,611 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2022-10-15 17:15:09,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-10-15 17:15:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:15:09,612 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:09,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:15:09,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:15:09,613 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:09,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:09,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1778701705, now seen corresponding path program 1 times [2022-10-15 17:15:09,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:09,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384906744] [2022-10-15 17:15:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:09,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:09,896 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 17:15:09,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:09,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384906744] [2022-10-15 17:15:09,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384906744] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:09,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:09,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:15:09,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117130750] [2022-10-15 17:15:09,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:09,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:15:09,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:09,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:15:09,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:15:09,901 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:10,048 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2022-10-15 17:15:10,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:15:10,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:15:10,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:10,051 INFO L225 Difference]: With dead ends: 50 [2022-10-15 17:15:10,051 INFO L226 Difference]: Without dead ends: 50 [2022-10-15 17:15:10,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:15:10,054 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 50 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:10,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 68 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-15 17:15:10,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-10-15 17:15:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 42 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-10-15 17:15:10,064 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 6 [2022-10-15 17:15:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:10,065 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-10-15 17:15:10,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-10-15 17:15:10,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-15 17:15:10,066 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:10,067 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:10,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:15:10,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:10,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:10,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1740982222, now seen corresponding path program 1 times [2022-10-15 17:15:10,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:10,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8333843] [2022-10-15 17:15:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:10,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:10,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:10,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8333843] [2022-10-15 17:15:10,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8333843] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:10,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157059154] [2022-10-15 17:15:10,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:10,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:10,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:10,337 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 17:15:10,363 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 17:15:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:10,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 17:15:10,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:10,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:15:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:10,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:10,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157059154] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:10,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:10,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-10-15 17:15:10,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137738301] [2022-10-15 17:15:10,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:10,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 17:15:10,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:10,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 17:15:10,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:15:10,815 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 14 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:11,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:11,078 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2022-10-15 17:15:11,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:15:11,079 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-15 17:15:11,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:11,082 INFO L225 Difference]: With dead ends: 71 [2022-10-15 17:15:11,082 INFO L226 Difference]: Without dead ends: 71 [2022-10-15 17:15:11,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-10-15 17:15:11,085 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 109 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:11,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 153 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:15:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-15 17:15:11,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2022-10-15 17:15:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 60 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2022-10-15 17:15:11,100 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 11 [2022-10-15 17:15:11,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:11,100 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2022-10-15 17:15:11,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-10-15 17:15:11,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-15 17:15:11,102 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:11,102 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-15 17:15:11,138 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 17:15:11,316 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 17:15:11,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:11,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:11,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1540870345, now seen corresponding path program 2 times [2022-10-15 17:15:11,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:11,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644719561] [2022-10-15 17:15:11,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:11,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:11,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:11,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644719561] [2022-10-15 17:15:11,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644719561] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:11,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952360106] [2022-10-15 17:15:11,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:15:11,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:11,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:11,800 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 17:15:11,804 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 17:15:11,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:15:11,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:11,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 17:15:11,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:11,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:15:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:12,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:15:12,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952360106] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:12,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:15:12,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2022-10-15 17:15:12,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439819011] [2022-10-15 17:15:12,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:12,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 17:15:12,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:12,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 17:15:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-10-15 17:15:12,160 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:12,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:12,395 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2022-10-15 17:15:12,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:15:12,395 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-10-15 17:15:12,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:12,397 INFO L225 Difference]: With dead ends: 69 [2022-10-15 17:15:12,397 INFO L226 Difference]: Without dead ends: 69 [2022-10-15 17:15:12,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2022-10-15 17:15:12,399 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 60 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:12,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 132 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:12,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-15 17:15:12,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 49. [2022-10-15 17:15:12,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.170731707317073) internal successors, (48), 44 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:12,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-10-15 17:15:12,424 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 26 [2022-10-15 17:15:12,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:12,425 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-10-15 17:15:12,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:12,426 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-10-15 17:15:12,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 17:15:12,428 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:12,428 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:12,455 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 17:15:12,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 17:15:12,630 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:12,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:12,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1547846002, now seen corresponding path program 1 times [2022-10-15 17:15:12,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:12,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697122511] [2022-10-15 17:15:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:12,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:12,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 17:15:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-10-15 17:15:12,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:12,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697122511] [2022-10-15 17:15:12,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697122511] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:12,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:12,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:15:12,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718609693] [2022-10-15 17:15:12,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:12,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:15:12,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:12,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:15:12,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:15:12,897 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 17:15:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:12,955 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-10-15 17:15:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:15:12,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 46 [2022-10-15 17:15:12,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:12,959 INFO L225 Difference]: With dead ends: 54 [2022-10-15 17:15:12,959 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 17:15:12,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:15:12,968 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 30 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:12,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 66 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:15:12,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 17:15:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2022-10-15 17:15:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 47 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:12,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-10-15 17:15:12,988 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 46 [2022-10-15 17:15:12,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:12,988 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-10-15 17:15:12,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 17:15:12,989 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-10-15 17:15:12,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-15 17:15:12,993 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:12,993 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:12,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:15:12,994 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:12,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:12,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1428184137, now seen corresponding path program 1 times [2022-10-15 17:15:12,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:12,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494047283] [2022-10-15 17:15:12,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:12,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:13,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 17:15:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-10-15 17:15:13,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:13,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494047283] [2022-10-15 17:15:13,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494047283] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:13,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189183428] [2022-10-15 17:15:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:13,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:13,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:13,350 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 17:15:13,362 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 17:15:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:13,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:15:13,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 17:15:13,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 17:15:13,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189183428] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:13,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:13,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-10-15 17:15:13,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557965486] [2022-10-15 17:15:13,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:13,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 17:15:13,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:13,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 17:15:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:15:13,544 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 17:15:13,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:13,665 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2022-10-15 17:15:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:15:13,666 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2022-10-15 17:15:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:13,667 INFO L225 Difference]: With dead ends: 81 [2022-10-15 17:15:13,668 INFO L226 Difference]: Without dead ends: 81 [2022-10-15 17:15:13,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:15:13,669 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 99 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:13,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 118 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-10-15 17:15:13,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-10-15 17:15:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.12) internal successors, (84), 76 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:13,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2022-10-15 17:15:13,677 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 51 [2022-10-15 17:15:13,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:13,678 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2022-10-15 17:15:13,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 17:15:13,678 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2022-10-15 17:15:13,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-10-15 17:15:13,682 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:13,682 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:13,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-15 17:15:13,895 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 17:15:13,896 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:13,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:13,897 INFO L85 PathProgramCache]: Analyzing trace with hash -79312296, now seen corresponding path program 1 times [2022-10-15 17:15:13,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:13,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504864489] [2022-10-15 17:15:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:13,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:14,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:14,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-15 17:15:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:14,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-15 17:15:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 473 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-10-15 17:15:14,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:14,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504864489] [2022-10-15 17:15:14,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504864489] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:14,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621562709] [2022-10-15 17:15:14,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:14,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:14,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:14,414 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 17:15:14,438 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 17:15:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:14,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:15:14,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 388 proven. 81 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-10-15 17:15:14,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 473 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-10-15 17:15:14,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621562709] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:14,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:14,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-10-15 17:15:14,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900836387] [2022-10-15 17:15:14,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:14,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 17:15:14,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:14,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 17:15:14,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:15:14,741 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:14,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:14,825 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2022-10-15 17:15:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:15:14,825 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-10-15 17:15:14,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:14,827 INFO L225 Difference]: With dead ends: 137 [2022-10-15 17:15:14,827 INFO L226 Difference]: Without dead ends: 137 [2022-10-15 17:15:14,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:15:14,829 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 182 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:14,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 157 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:14,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-10-15 17:15:14,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-10-15 17:15:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 131 states have (on average 1.1297709923664123) internal successors, (148), 132 states have internal predecessors, (148), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 154 transitions. [2022-10-15 17:15:14,841 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 154 transitions. Word has length 135 [2022-10-15 17:15:14,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:14,841 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 154 transitions. [2022-10-15 17:15:14,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:14,842 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 154 transitions. [2022-10-15 17:15:14,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-10-15 17:15:14,848 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:14,849 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 42, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:14,907 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 17:15:15,064 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 17:15:15,065 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:15,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:15,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1637958616, now seen corresponding path program 2 times [2022-10-15 17:15:15,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:15,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832970518] [2022-10-15 17:15:15,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:15,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:15,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:16,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-15 17:15:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:16,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-10-15 17:15:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4453 backedges. 0 proven. 2493 refuted. 0 times theorem prover too weak. 1960 trivial. 0 not checked. [2022-10-15 17:15:16,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:16,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832970518] [2022-10-15 17:15:16,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832970518] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:16,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142436903] [2022-10-15 17:15:16,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:15:16,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:16,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:16,169 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 17:15:16,195 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 17:15:16,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:15:16,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:16,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:15:16,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:16,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4453 backedges. 2020 proven. 469 refuted. 0 times theorem prover too weak. 1964 trivial. 0 not checked. [2022-10-15 17:15:16,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4453 backedges. 0 proven. 2493 refuted. 0 times theorem prover too weak. 1960 trivial. 0 not checked. [2022-10-15 17:15:16,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142436903] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:16,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:16,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2022-10-15 17:15:16,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703674108] [2022-10-15 17:15:16,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:16,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-15 17:15:16,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:16,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-15 17:15:16,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-10-15 17:15:16,964 INFO L87 Difference]: Start difference. First operand 137 states and 154 transitions. Second operand has 32 states, 32 states have (on average 5.75) internal successors, (184), 32 states have internal predecessors, (184), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:17,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:17,258 INFO L93 Difference]: Finished difference Result 249 states and 282 transitions. [2022-10-15 17:15:17,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 17:15:17,259 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.75) internal successors, (184), 32 states have internal predecessors, (184), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 255 [2022-10-15 17:15:17,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:17,261 INFO L225 Difference]: With dead ends: 249 [2022-10-15 17:15:17,261 INFO L226 Difference]: Without dead ends: 249 [2022-10-15 17:15:17,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-10-15 17:15:17,263 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 399 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:17,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 353 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:15:17,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-10-15 17:15:17,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-10-15 17:15:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 243 states have (on average 1.1358024691358024) internal successors, (276), 244 states have internal predecessors, (276), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 282 transitions. [2022-10-15 17:15:17,279 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 282 transitions. Word has length 255 [2022-10-15 17:15:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:17,280 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 282 transitions. [2022-10-15 17:15:17,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.75) internal successors, (184), 32 states have internal predecessors, (184), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 282 transitions. [2022-10-15 17:15:17,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-10-15 17:15:17,289 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:17,289 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 90, 90, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:17,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:17,505 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 17:15:17,506 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:17,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:17,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1279178456, now seen corresponding path program 3 times [2022-10-15 17:15:17,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:17,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933946576] [2022-10-15 17:15:17,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:17,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:19,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:20,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-10-15 17:15:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-10-15 17:15:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 20317 backedges. 0 proven. 11333 refuted. 0 times theorem prover too weak. 8984 trivial. 0 not checked. [2022-10-15 17:15:20,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:20,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933946576] [2022-10-15 17:15:20,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933946576] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:20,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342429300] [2022-10-15 17:15:20,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:15:20,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:20,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:20,576 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 17:15:20,595 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 17:15:20,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-15 17:15:20,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:20,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:15:20,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 20317 backedges. 9130 proven. 7 refuted. 0 times theorem prover too weak. 11180 trivial. 0 not checked. [2022-10-15 17:15:20,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20317 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20310 trivial. 0 not checked. [2022-10-15 17:15:20,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342429300] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:20,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:20,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 5, 5] total 39 [2022-10-15 17:15:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301523457] [2022-10-15 17:15:20,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:20,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-10-15 17:15:20,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:20,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-10-15 17:15:20,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=555, Invalid=927, Unknown=0, NotChecked=0, Total=1482 [2022-10-15 17:15:20,947 INFO L87 Difference]: Start difference. First operand 249 states and 282 transitions. Second operand has 39 states, 39 states have (on average 5.769230769230769) internal successors, (225), 39 states have internal predecessors, (225), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 17:15:21,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:21,222 INFO L93 Difference]: Finished difference Result 282 states and 317 transitions. [2022-10-15 17:15:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-10-15 17:15:21,223 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.769230769230769) internal successors, (225), 39 states have internal predecessors, (225), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 495 [2022-10-15 17:15:21,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:21,226 INFO L225 Difference]: With dead ends: 282 [2022-10-15 17:15:21,226 INFO L226 Difference]: Without dead ends: 282 [2022-10-15 17:15:21,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1027 GetRequests, 990 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=555, Invalid=927, Unknown=0, NotChecked=0, Total=1482 [2022-10-15 17:15:21,228 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 433 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:21,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 342 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:15:21,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-10-15 17:15:21,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 276. [2022-10-15 17:15:21,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 270 states have (on average 1.125925925925926) internal successors, (304), 271 states have internal predecessors, (304), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 310 transitions. [2022-10-15 17:15:21,242 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 310 transitions. Word has length 495 [2022-10-15 17:15:21,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:21,243 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 310 transitions. [2022-10-15 17:15:21,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.769230769230769) internal successors, (225), 39 states have internal predecessors, (225), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 17:15:21,244 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 310 transitions. [2022-10-15 17:15:21,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-10-15 17:15:21,257 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:21,258 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 93, 93, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:21,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:21,473 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 17:15:21,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:21,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1222146503, now seen corresponding path program 4 times [2022-10-15 17:15:21,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:21,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100832173] [2022-10-15 17:15:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:21,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:23,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:24,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-10-15 17:15:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:24,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-10-15 17:15:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 21765 backedges. 0 proven. 12098 refuted. 0 times theorem prover too weak. 9667 trivial. 0 not checked. [2022-10-15 17:15:24,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:24,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100832173] [2022-10-15 17:15:24,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100832173] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:24,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639130792] [2022-10-15 17:15:24,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:15:24,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:24,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:24,361 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 17:15:24,389 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 17:15:24,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:15:24,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:24,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-15 17:15:24,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 21765 backedges. 9738 proven. 2356 refuted. 0 times theorem prover too weak. 9671 trivial. 0 not checked. [2022-10-15 17:15:25,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 21765 backedges. 0 proven. 12098 refuted. 0 times theorem prover too weak. 9667 trivial. 0 not checked. [2022-10-15 17:15:26,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639130792] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:26,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:26,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 62 [2022-10-15 17:15:26,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547563905] [2022-10-15 17:15:26,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:26,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-10-15 17:15:26,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:26,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-10-15 17:15:26,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2022-10-15 17:15:26,630 INFO L87 Difference]: Start difference. First operand 276 states and 310 transitions. Second operand has 62 states, 62 states have (on average 5.467741935483871) internal successors, (339), 62 states have internal predecessors, (339), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:27,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:27,399 INFO L93 Difference]: Finished difference Result 479 states and 542 transitions. [2022-10-15 17:15:27,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-10-15 17:15:27,400 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.467741935483871) internal successors, (339), 62 states have internal predecessors, (339), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 530 [2022-10-15 17:15:27,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:27,403 INFO L225 Difference]: With dead ends: 479 [2022-10-15 17:15:27,403 INFO L226 Difference]: Without dead ends: 479 [2022-10-15 17:15:27,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1098 GetRequests, 1034 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2022-10-15 17:15:27,406 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 840 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:27,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 473 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:15:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-10-15 17:15:27,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2022-10-15 17:15:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 473 states have (on average 1.1331923890063424) internal successors, (536), 474 states have internal predecessors, (536), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 542 transitions. [2022-10-15 17:15:27,422 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 542 transitions. Word has length 530 [2022-10-15 17:15:27,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:27,422 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 542 transitions. [2022-10-15 17:15:27,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.467741935483871) internal successors, (339), 62 states have internal predecessors, (339), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:27,423 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 542 transitions. [2022-10-15 17:15:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2022-10-15 17:15:27,459 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:27,459 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 180, 180, 180, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:27,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:27,674 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 17:15:27,675 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2067072056, now seen corresponding path program 5 times [2022-10-15 17:15:27,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:27,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698428611] [2022-10-15 17:15:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:27,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:28,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:28,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-10-15 17:15:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:29,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2022-10-15 17:15:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 81186 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 81105 trivial. 0 not checked. [2022-10-15 17:15:29,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:29,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698428611] [2022-10-15 17:15:29,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698428611] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:29,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125963272] [2022-10-15 17:15:29,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 17:15:29,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:29,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:29,174 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 17:15:29,196 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 17:15:32,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2022-10-15 17:15:32,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:32,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:15:32,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 81186 backedges. 36250 proven. 81 refuted. 0 times theorem prover too weak. 44855 trivial. 0 not checked. [2022-10-15 17:15:32,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 81186 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 81105 trivial. 0 not checked. [2022-10-15 17:15:33,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125963272] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:33,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:33,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-10-15 17:15:33,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817529182] [2022-10-15 17:15:33,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:33,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 17:15:33,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:33,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 17:15:33,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:15:33,117 INFO L87 Difference]: Start difference. First operand 479 states and 542 transitions. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:15:33,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:33,203 INFO L93 Difference]: Finished difference Result 519 states and 582 transitions. [2022-10-15 17:15:33,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:15:33,203 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 965 [2022-10-15 17:15:33,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:33,208 INFO L225 Difference]: With dead ends: 519 [2022-10-15 17:15:33,208 INFO L226 Difference]: Without dead ends: 519 [2022-10-15 17:15:33,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1943 GetRequests, 1928 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:15:33,209 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 84 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:33,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 227 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-10-15 17:15:33,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2022-10-15 17:15:33,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 513 states have (on average 1.1228070175438596) internal successors, (576), 514 states have internal predecessors, (576), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:33,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 582 transitions. [2022-10-15 17:15:33,226 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 582 transitions. Word has length 965 [2022-10-15 17:15:33,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:33,227 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 582 transitions. [2022-10-15 17:15:33,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:15:33,228 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 582 transitions. [2022-10-15 17:15:33,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2022-10-15 17:15:33,264 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:33,264 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 180, 180, 180, 14, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:33,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-10-15 17:15:33,478 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 17:15:33,479 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:33,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -886483016, now seen corresponding path program 6 times [2022-10-15 17:15:33,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:33,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358691059] [2022-10-15 17:15:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:33,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:35,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:35,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-10-15 17:15:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:35,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2022-10-15 17:15:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 81574 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 81105 trivial. 0 not checked. [2022-10-15 17:15:35,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:35,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358691059] [2022-10-15 17:15:35,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358691059] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:35,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495160117] [2022-10-15 17:15:35,553 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-15 17:15:35,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:35,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:35,554 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 17:15:35,576 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 17:15:36,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2022-10-15 17:15:36,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:36,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:15:36,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 81574 backedges. 36250 proven. 469 refuted. 0 times theorem prover too weak. 44855 trivial. 0 not checked. [2022-10-15 17:15:37,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:37,504 INFO L134 CoverageAnalysis]: Checked inductivity of 81574 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 81105 trivial. 0 not checked. [2022-10-15 17:15:37,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495160117] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:37,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:37,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2022-10-15 17:15:37,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844730381] [2022-10-15 17:15:37,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:37,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-15 17:15:37,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:37,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-15 17:15:37,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:15:37,510 INFO L87 Difference]: Start difference. First operand 519 states and 582 transitions. Second operand has 33 states, 33 states have (on average 5.545454545454546) internal successors, (183), 33 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:15:37,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:37,697 INFO L93 Difference]: Finished difference Result 599 states and 662 transitions. [2022-10-15 17:15:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 17:15:37,698 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.545454545454546) internal successors, (183), 33 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1005 [2022-10-15 17:15:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:37,703 INFO L225 Difference]: With dead ends: 599 [2022-10-15 17:15:37,704 INFO L226 Difference]: Without dead ends: 599 [2022-10-15 17:15:37,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2031 GetRequests, 2000 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:15:37,705 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 120 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:37,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 208 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-10-15 17:15:37,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2022-10-15 17:15:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 593 states have (on average 1.1062394603709949) internal successors, (656), 594 states have internal predecessors, (656), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 662 transitions. [2022-10-15 17:15:37,725 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 662 transitions. Word has length 1005 [2022-10-15 17:15:37,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:37,727 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 662 transitions. [2022-10-15 17:15:37,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.545454545454546) internal successors, (183), 33 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:15:37,727 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 662 transitions. [2022-10-15 17:15:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1086 [2022-10-15 17:15:37,740 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:37,741 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 180, 180, 180, 30, 30, 30, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:37,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:37,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:37,954 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:37,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash 816152248, now seen corresponding path program 7 times [2022-10-15 17:15:37,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:37,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7662334] [2022-10-15 17:15:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:37,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:41,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-10-15 17:15:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:41,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2022-10-15 17:15:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 83310 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 81105 trivial. 0 not checked. [2022-10-15 17:15:41,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:41,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7662334] [2022-10-15 17:15:41,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7662334] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:41,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880267586] [2022-10-15 17:15:41,656 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-15 17:15:41,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:41,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:41,657 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:15:41,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 17:15:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:42,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 3218 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-15 17:15:42,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 83310 backedges. 36250 proven. 2205 refuted. 0 times theorem prover too weak. 44855 trivial. 0 not checked. [2022-10-15 17:15:42,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 83310 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 81105 trivial. 0 not checked. [2022-10-15 17:15:44,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880267586] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:44,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:44,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 62 [2022-10-15 17:15:44,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473980308] [2022-10-15 17:15:44,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:44,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-10-15 17:15:44,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:44,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-10-15 17:15:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2022-10-15 17:15:44,028 INFO L87 Difference]: Start difference. First operand 599 states and 662 transitions. Second operand has 62 states, 62 states have (on average 5.370967741935484) internal successors, (333), 62 states have internal predecessors, (333), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:15:44,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:44,416 INFO L93 Difference]: Finished difference Result 744 states and 807 transitions. [2022-10-15 17:15:44,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-10-15 17:15:44,417 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.370967741935484) internal successors, (333), 62 states have internal predecessors, (333), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1085 [2022-10-15 17:15:44,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:44,423 INFO L225 Difference]: With dead ends: 744 [2022-10-15 17:15:44,423 INFO L226 Difference]: Without dead ends: 744 [2022-10-15 17:15:44,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2207 GetRequests, 2144 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2022-10-15 17:15:44,426 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 236 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:44,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 412 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:15:44,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-10-15 17:15:44,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2022-10-15 17:15:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 738 states have (on average 1.0853658536585367) internal successors, (801), 739 states have internal predecessors, (801), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 807 transitions. [2022-10-15 17:15:44,447 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 807 transitions. Word has length 1085 [2022-10-15 17:15:44,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:44,448 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 807 transitions. [2022-10-15 17:15:44,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.370967741935484) internal successors, (333), 62 states have internal predecessors, (333), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:15:44,449 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 807 transitions. [2022-10-15 17:15:44,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1231 [2022-10-15 17:15:44,464 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:44,465 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 180, 180, 180, 59, 59, 59, 59, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:44,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:44,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 17:15:44,681 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:44,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:44,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1867546259, now seen corresponding path program 8 times [2022-10-15 17:15:44,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:44,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322916171] [2022-10-15 17:15:44,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:44,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat