/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-examples/standard_sentinel.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 05:34:43,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 05:34:43,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 05:34:44,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 05:34:44,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 05:34:44,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 05:34:44,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 05:34:44,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 05:34:44,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 05:34:44,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 05:34:44,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 05:34:44,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 05:34:44,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 05:34:44,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 05:34:44,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 05:34:44,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 05:34:44,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 05:34:44,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 05:34:44,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 05:34:44,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 05:34:44,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 05:34:44,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 05:34:44,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 05:34:44,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 05:34:44,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 05:34:44,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 05:34:44,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 05:34:44,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 05:34:44,069 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 [2022-10-16 05:34:44,124 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 05:34:44,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 05:34:44,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 05:34:44,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 05:34:44,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 05:34:44,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 05:34:44,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 05:34:44,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 05:34:44,131 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 05:34:44,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 05:34:44,132 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 05:34:44,133 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 05:34:44,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 05:34:44,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 05:34:44,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 05:34:44,133 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 05:34:44,134 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 05:34:44,134 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 05:34:44,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 05:34:44,134 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 05:34:44,134 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 05:34:44,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 05:34:44,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 05:34:44,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 05:34:44,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 05:34:44,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 05:34:44,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 05:34:44,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 05:34:44,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 05:34:44,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 05:34:44,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 05:34:44,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 05:34:44,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 05:34:44,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 05:34:44,543 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 05:34:44,544 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 05:34:44,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_sentinel.i.v+cfa-reducer.c [2022-10-16 05:34:44,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9c78f94/a5ecc2a963b642fe83430b72a60d5b5a/FLAG6cb3b1114 [2022-10-16 05:34:45,306 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 05:34:45,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_sentinel.i.v+cfa-reducer.c [2022-10-16 05:34:45,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9c78f94/a5ecc2a963b642fe83430b72a60d5b5a/FLAG6cb3b1114 [2022-10-16 05:34:45,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9c78f94/a5ecc2a963b642fe83430b72a60d5b5a [2022-10-16 05:34:45,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 05:34:45,681 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 05:34:45,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 05:34:45,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 05:34:45,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 05:34:45,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:45,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5acf3e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45, skipping insertion in model container [2022-10-16 05:34:45,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:45,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 05:34:45,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 05:34:45,886 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_sentinel.i.v+cfa-reducer.c[991,1004] [2022-10-16 05:34:45,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 05:34:45,901 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 05:34:45,920 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_sentinel.i.v+cfa-reducer.c[991,1004] [2022-10-16 05:34:45,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 05:34:45,938 INFO L208 MainTranslator]: Completed translation [2022-10-16 05:34:45,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45 WrapperNode [2022-10-16 05:34:45,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 05:34:45,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 05:34:45,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 05:34:45,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 05:34:45,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:45,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:45,980 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 68 [2022-10-16 05:34:45,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 05:34:45,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 05:34:45,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 05:34:45,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 05:34:45,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:45,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:45,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:45,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:46,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:46,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:46,006 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:46,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:46,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 05:34:46,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 05:34:46,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 05:34:46,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 05:34:46,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45" (1/1) ... [2022-10-16 05:34:46,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 05:34:46,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:34:46,049 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) [2022-10-16 05:34:46,064 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 [2022-10-16 05:34:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 05:34:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 05:34:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 05:34:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 05:34:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 05:34:46,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 05:34:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 05:34:46,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 05:34:46,186 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 05:34:46,188 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 05:34:46,363 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 05:34:46,371 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 05:34:46,371 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 05:34:46,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:34:46 BoogieIcfgContainer [2022-10-16 05:34:46,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 05:34:46,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 05:34:46,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 05:34:46,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 05:34:46,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:34:45" (1/3) ... [2022-10-16 05:34:46,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e6077c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:34:46, skipping insertion in model container [2022-10-16 05:34:46,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:34:45" (2/3) ... [2022-10-16 05:34:46,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e6077c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:34:46, skipping insertion in model container [2022-10-16 05:34:46,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:34:46" (3/3) ... [2022-10-16 05:34:46,389 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_sentinel.i.v+cfa-reducer.c [2022-10-16 05:34:46,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 05:34:46,444 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-10-16 05:34:46,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 05:34:46,554 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;@449e85a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 05:34:46,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-10-16 05:34:46,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.875) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 05:34:46,567 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:34:46,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 05:34:46,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:34:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:34:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-10-16 05:34:46,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:34:46,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8152590] [2022-10-16 05:34:46,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:46,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:34:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:46,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:34:46,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8152590] [2022-10-16 05:34:46,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8152590] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:34:46,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 05:34:46,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 05:34:46,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850258203] [2022-10-16 05:34:46,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:34:46,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 05:34:46,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:34:46,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 05:34:46,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 05:34:46,964 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.875) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:34:47,048 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-10-16 05:34:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 05:34:47,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-16 05:34:47,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:34:47,060 INFO L225 Difference]: With dead ends: 22 [2022-10-16 05:34:47,060 INFO L226 Difference]: Without dead ends: 20 [2022-10-16 05:34:47,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 05:34:47,067 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 05:34:47,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 17 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 05:34:47,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-16 05:34:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-16 05:34:47,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:47,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-10-16 05:34:47,106 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2022-10-16 05:34:47,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:34:47,106 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-10-16 05:34:47,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-10-16 05:34:47,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 05:34:47,107 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:34:47,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 05:34:47,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 05:34:47,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:34:47,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:34:47,109 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-10-16 05:34:47,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:34:47,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606178] [2022-10-16 05:34:47,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:47,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:34:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:47,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:34:47,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606178] [2022-10-16 05:34:47,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606178] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:34:47,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 05:34:47,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 05:34:47,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536844858] [2022-10-16 05:34:47,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:34:47,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 05:34:47,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:34:47,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 05:34:47,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 05:34:47,334 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:47,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:34:47,400 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-10-16 05:34:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 05:34:47,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-16 05:34:47,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:34:47,402 INFO L225 Difference]: With dead ends: 24 [2022-10-16 05:34:47,403 INFO L226 Difference]: Without dead ends: 24 [2022-10-16 05:34:47,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 05:34:47,409 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 05:34:47,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 29 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 05:34:47,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-10-16 05:34:47,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-10-16 05:34:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-10-16 05:34:47,425 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 4 [2022-10-16 05:34:47,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:34:47,426 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-10-16 05:34:47,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:47,429 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-10-16 05:34:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 05:34:47,430 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:34:47,430 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-16 05:34:47,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 05:34:47,432 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:34:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:34:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2022-10-16 05:34:47,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:34:47,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466690195] [2022-10-16 05:34:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:47,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:34:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:47,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:34:47,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466690195] [2022-10-16 05:34:47,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466690195] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:34:47,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282839997] [2022-10-16 05:34:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:47,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:34:47,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:34:47,777 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) [2022-10-16 05:34:47,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 05:34:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:47,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 05:34:47,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:34:47,976 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 [2022-10-16 05:34:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:48,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:34:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:48,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282839997] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:34:48,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:34:48,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-10-16 05:34:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195125151] [2022-10-16 05:34:48,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:34:48,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 05:34:48,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:34:48,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 05:34:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 05:34:48,145 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:34:48,290 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-10-16 05:34:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 05:34:48,291 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-16 05:34:48,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:34:48,292 INFO L225 Difference]: With dead ends: 32 [2022-10-16 05:34:48,292 INFO L226 Difference]: Without dead ends: 32 [2022-10-16 05:34:48,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-10-16 05:34:48,294 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 30 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 05:34:48,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 52 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 05:34:48,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-16 05:34:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-16 05:34:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-10-16 05:34:48,303 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 8 [2022-10-16 05:34:48,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:34:48,304 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-10-16 05:34:48,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:48,304 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-10-16 05:34:48,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-16 05:34:48,305 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:34:48,305 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 05:34:48,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 05:34:48,519 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 [2022-10-16 05:34:48,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:34:48,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:34:48,522 INFO L85 PathProgramCache]: Analyzing trace with hash 519339515, now seen corresponding path program 1 times [2022-10-16 05:34:48,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:34:48,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938836528] [2022-10-16 05:34:48,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:48,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:34:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:48,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:34:48,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938836528] [2022-10-16 05:34:48,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938836528] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:34:48,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874654549] [2022-10-16 05:34:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:48,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:34:48,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:34:48,647 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) [2022-10-16 05:34:48,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 05:34:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:48,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 05:34:48,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:34:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:48,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:34:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:48,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874654549] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:34:48,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:34:48,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-10-16 05:34:48,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823189022] [2022-10-16 05:34:48,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:34:48,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 05:34:48,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:34:48,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 05:34:48,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-16 05:34:48,867 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:48,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:34:48,947 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2022-10-16 05:34:48,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 05:34:48,948 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-10-16 05:34:48,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:34:48,949 INFO L225 Difference]: With dead ends: 56 [2022-10-16 05:34:48,951 INFO L226 Difference]: Without dead ends: 56 [2022-10-16 05:34:48,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-16 05:34:48,953 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 05:34:48,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 61 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 05:34:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-16 05:34:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-10-16 05:34:48,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 55 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2022-10-16 05:34:48,969 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 21 [2022-10-16 05:34:48,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:34:48,970 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2022-10-16 05:34:48,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:48,970 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2022-10-16 05:34:48,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-16 05:34:48,973 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:34:48,973 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1] [2022-10-16 05:34:48,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-16 05:34:49,184 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 [2022-10-16 05:34:49,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:34:49,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:34:49,187 INFO L85 PathProgramCache]: Analyzing trace with hash 649822121, now seen corresponding path program 2 times [2022-10-16 05:34:49,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:34:49,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996160432] [2022-10-16 05:34:49,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:49,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:34:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:49,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:34:49,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996160432] [2022-10-16 05:34:49,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996160432] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:34:49,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813901993] [2022-10-16 05:34:49,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 05:34:49,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:34:49,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:34:49,622 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) [2022-10-16 05:34:49,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 05:34:49,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 05:34:49,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 05:34:49,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 05:34:49,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:34:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-10-16 05:34:49,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 05:34:49,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813901993] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:34:49,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 05:34:49,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 15 [2022-10-16 05:34:49,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060421097] [2022-10-16 05:34:49,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:34:49,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 05:34:49,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:34:49,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 05:34:49,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-10-16 05:34:49,946 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:34:49,949 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2022-10-16 05:34:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 05:34:49,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-10-16 05:34:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:34:49,951 INFO L225 Difference]: With dead ends: 57 [2022-10-16 05:34:49,951 INFO L226 Difference]: Without dead ends: 56 [2022-10-16 05:34:49,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-10-16 05:34:49,953 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 05:34:49,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-10-16 05:34:49,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-16 05:34:49,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-10-16 05:34:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2022-10-16 05:34:49,960 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 45 [2022-10-16 05:34:49,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:34:49,961 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2022-10-16 05:34:49,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:49,961 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2022-10-16 05:34:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 05:34:49,962 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:34:49,963 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2022-10-16 05:34:50,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 05:34:50,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:34:50,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:34:50,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:34:50,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1330377454, now seen corresponding path program 1 times [2022-10-16 05:34:50,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:34:50,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970636394] [2022-10-16 05:34:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:50,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:34:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-10-16 05:34:50,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:34:50,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970636394] [2022-10-16 05:34:50,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970636394] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:34:50,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 05:34:50,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 05:34:50,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534265322] [2022-10-16 05:34:50,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:34:50,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 05:34:50,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:34:50,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 05:34:50,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 05:34:50,411 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:50,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:34:50,442 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2022-10-16 05:34:50,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 05:34:50,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-10-16 05:34:50,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:34:50,444 INFO L225 Difference]: With dead ends: 55 [2022-10-16 05:34:50,444 INFO L226 Difference]: Without dead ends: 55 [2022-10-16 05:34:50,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-16 05:34:50,446 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 05:34:50,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 05:34:50,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-16 05:34:50,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-10-16 05:34:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2022-10-16 05:34:50,452 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 46 [2022-10-16 05:34:50,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:34:50,453 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2022-10-16 05:34:50,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2022-10-16 05:34:50,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 05:34:50,455 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:34:50,455 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2022-10-16 05:34:50,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 05:34:50,455 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:34:50,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:34:50,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1330376749, now seen corresponding path program 1 times [2022-10-16 05:34:50,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:34:50,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67918744] [2022-10-16 05:34:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:50,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:34:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:50,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:34:50,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67918744] [2022-10-16 05:34:50,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67918744] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:34:50,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099962628] [2022-10-16 05:34:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:50,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:34:50,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:34:50,708 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) [2022-10-16 05:34:50,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 05:34:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:50,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 05:34:50,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:34:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:50,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:34:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:51,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099962628] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:34:51,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:34:51,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-10-16 05:34:51,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750323859] [2022-10-16 05:34:51,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:34:51,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-16 05:34:51,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:34:51,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-16 05:34:51,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-10-16 05:34:51,098 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:34:51,214 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2022-10-16 05:34:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-16 05:34:51,214 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-10-16 05:34:51,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:34:51,216 INFO L225 Difference]: With dead ends: 103 [2022-10-16 05:34:51,216 INFO L226 Difference]: Without dead ends: 103 [2022-10-16 05:34:51,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-10-16 05:34:51,218 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 99 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 05:34:51,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 52 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 05:34:51,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-10-16 05:34:51,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-10-16 05:34:51,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 100 states have (on average 1.05) internal successors, (105), 102 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2022-10-16 05:34:51,226 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 46 [2022-10-16 05:34:51,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:34:51,227 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2022-10-16 05:34:51,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2022-10-16 05:34:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-16 05:34:51,229 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:34:51,229 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2022-10-16 05:34:51,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-16 05:34:51,442 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 [2022-10-16 05:34:51,443 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:34:51,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:34:51,444 INFO L85 PathProgramCache]: Analyzing trace with hash 669300215, now seen corresponding path program 2 times [2022-10-16 05:34:51,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:34:51,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229860293] [2022-10-16 05:34:51,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:51,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:34:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:34:52,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:34:52,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229860293] [2022-10-16 05:34:52,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229860293] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:34:52,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276225540] [2022-10-16 05:34:52,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 05:34:52,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:34:52,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:34:52,336 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) [2022-10-16 05:34:52,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 05:34:52,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 05:34:52,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 05:34:52,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 05:34:52,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:34:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-10-16 05:34:52,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 05:34:52,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276225540] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:34:52,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 05:34:52,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [25] total 27 [2022-10-16 05:34:52,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379910036] [2022-10-16 05:34:52,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:34:52,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 05:34:52,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:34:52,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 05:34:52,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2022-10-16 05:34:52,844 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:52,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:34:52,846 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2022-10-16 05:34:52,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 05:34:52,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-10-16 05:34:52,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:34:52,848 INFO L225 Difference]: With dead ends: 104 [2022-10-16 05:34:52,848 INFO L226 Difference]: Without dead ends: 103 [2022-10-16 05:34:52,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2022-10-16 05:34:52,850 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 05:34:52,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2022-10-16 05:34:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-10-16 05:34:52,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-10-16 05:34:52,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 100 states have (on average 1.04) internal successors, (104), 102 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2022-10-16 05:34:52,858 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 94 [2022-10-16 05:34:52,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:34:52,859 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2022-10-16 05:34:52,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:52,859 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2022-10-16 05:34:52,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-16 05:34:52,860 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:34:52,861 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:34:52,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 05:34:53,074 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 [2022-10-16 05:34:53,075 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:34:53,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:34:53,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1048266280, now seen corresponding path program 1 times [2022-10-16 05:34:53,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:34:53,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134284903] [2022-10-16 05:34:53,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:53,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:34:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-10-16 05:34:53,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:34:53,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134284903] [2022-10-16 05:34:53,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134284903] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:34:53,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 05:34:53,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 05:34:53,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761175431] [2022-10-16 05:34:53,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:34:53,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 05:34:53,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:34:53,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 05:34:53,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 05:34:53,440 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:53,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:34:53,461 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2022-10-16 05:34:53,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 05:34:53,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-10-16 05:34:53,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:34:53,463 INFO L225 Difference]: With dead ends: 108 [2022-10-16 05:34:53,463 INFO L226 Difference]: Without dead ends: 108 [2022-10-16 05:34:53,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 05:34:53,464 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 05:34:53,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 05:34:53,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-10-16 05:34:53,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2022-10-16 05:34:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 101 states have (on average 1.0396039603960396) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2022-10-16 05:34:53,472 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 96 [2022-10-16 05:34:53,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:34:53,473 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2022-10-16 05:34:53,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2022-10-16 05:34:53,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-10-16 05:34:53,474 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:34:53,474 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:34:53,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 05:34:53,475 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:34:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:34:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1933418707, now seen corresponding path program 1 times [2022-10-16 05:34:53,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:34:53,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787512662] [2022-10-16 05:34:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:34:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 05:34:54,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:34:54,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787512662] [2022-10-16 05:34:54,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787512662] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:34:54,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137258178] [2022-10-16 05:34:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:54,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:34:54,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:34:54,254 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) [2022-10-16 05:34:54,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 05:34:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:54,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-16 05:34:54,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:34:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 05:34:54,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:34:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 05:34:55,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137258178] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:34:55,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:34:55,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-10-16 05:34:55,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453304471] [2022-10-16 05:34:55,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:34:55,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-10-16 05:34:55,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:34:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-10-16 05:34:55,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-10-16 05:34:55,372 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 49 states, 49 states have (on average 3.938775510204082) internal successors, (193), 49 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:55,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:34:55,614 INFO L93 Difference]: Finished difference Result 200 states and 201 transitions. [2022-10-16 05:34:55,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-16 05:34:55,614 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.938775510204082) internal successors, (193), 49 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-10-16 05:34:55,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:34:55,617 INFO L225 Difference]: With dead ends: 200 [2022-10-16 05:34:55,617 INFO L226 Difference]: Without dead ends: 200 [2022-10-16 05:34:55,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-10-16 05:34:55,620 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 207 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 05:34:55,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 101 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 05:34:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-10-16 05:34:55,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-10-16 05:34:55,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 197 states have (on average 1.0203045685279188) internal successors, (201), 199 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:55,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2022-10-16 05:34:55,651 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 98 [2022-10-16 05:34:55,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:34:55,655 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2022-10-16 05:34:55,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.938775510204082) internal successors, (193), 49 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:34:55,655 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2022-10-16 05:34:55,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-10-16 05:34:55,662 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:34:55,663 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:34:55,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 05:34:55,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:34:55,864 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:34:55,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:34:55,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1786478309, now seen corresponding path program 2 times [2022-10-16 05:34:55,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:34:55,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80878166] [2022-10-16 05:34:55,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:34:55,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:34:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:34:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 05:34:58,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:34:58,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80878166] [2022-10-16 05:34:58,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80878166] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:34:58,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387727377] [2022-10-16 05:34:58,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 05:34:58,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:34:58,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:34:58,680 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) [2022-10-16 05:34:58,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 05:34:58,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 05:34:58,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 05:34:58,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-16 05:34:58,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:34:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 05:34:59,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:35:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 05:35:02,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387727377] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:35:02,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:35:02,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-10-16 05:35:02,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332104598] [2022-10-16 05:35:02,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:35:02,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-10-16 05:35:02,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:35:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-10-16 05:35:02,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-10-16 05:35:02,206 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 97 states, 97 states have (on average 3.9690721649484537) internal successors, (385), 97 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:35:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:35:02,813 INFO L93 Difference]: Finished difference Result 392 states and 393 transitions. [2022-10-16 05:35:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-10-16 05:35:02,818 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.9690721649484537) internal successors, (385), 97 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2022-10-16 05:35:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:35:02,822 INFO L225 Difference]: With dead ends: 392 [2022-10-16 05:35:02,822 INFO L226 Difference]: Without dead ends: 392 [2022-10-16 05:35:02,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-10-16 05:35:02,828 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 282 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 05:35:02,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 149 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 05:35:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-10-16 05:35:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2022-10-16 05:35:02,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 389 states have (on average 1.0102827763496145) internal successors, (393), 391 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:35:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2022-10-16 05:35:02,840 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 194 [2022-10-16 05:35:02,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:35:02,840 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2022-10-16 05:35:02,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.9690721649484537) internal successors, (385), 97 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:35:02,841 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2022-10-16 05:35:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-10-16 05:35:02,848 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:35:02,848 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:35:02,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 05:35:03,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:35:03,062 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:35:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:35:03,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1705386411, now seen corresponding path program 3 times [2022-10-16 05:35:03,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:35:03,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415443101] [2022-10-16 05:35:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:35:03,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:35:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:35:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 17579 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 05:35:12,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:35:12,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415443101] [2022-10-16 05:35:12,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415443101] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:35:12,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944770759] [2022-10-16 05:35:12,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 05:35:12,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:35:12,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:35:12,404 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) [2022-10-16 05:35:12,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 05:35:12,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 05:35:12,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 05:35:12,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 05:35:12,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:35:12,576 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 [2022-10-16 05:35:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 17579 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2022-10-16 05:35:14,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:35:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 17579 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2022-10-16 05:35:15,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944770759] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:35:15,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:35:15,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 4, 4] total 103 [2022-10-16 05:35:15,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471520929] [2022-10-16 05:35:15,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:35:15,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-10-16 05:35:15,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:35:15,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-10-16 05:35:15,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4677, Invalid=5829, Unknown=0, NotChecked=0, Total=10506 [2022-10-16 05:35:15,826 INFO L87 Difference]: Start difference. First operand 392 states and 393 transitions. Second operand has 103 states, 103 states have (on average 4.0) internal successors, (412), 103 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:35:22,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:35:22,295 INFO L93 Difference]: Finished difference Result 414 states and 418 transitions. [2022-10-16 05:35:22,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-10-16 05:35:22,296 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 4.0) internal successors, (412), 103 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 386 [2022-10-16 05:35:22,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:35:22,300 INFO L225 Difference]: With dead ends: 414 [2022-10-16 05:35:22,300 INFO L226 Difference]: Without dead ends: 414 [2022-10-16 05:35:22,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5228 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=14098, Invalid=25702, Unknown=0, NotChecked=0, Total=39800 [2022-10-16 05:35:22,310 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 316 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 05:35:22,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 162 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 05:35:22,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-10-16 05:35:22,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 402. [2022-10-16 05:35:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 399 states have (on average 1.0175438596491229) internal successors, (406), 401 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:35:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 406 transitions. [2022-10-16 05:35:22,324 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 406 transitions. Word has length 386 [2022-10-16 05:35:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:35:22,324 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 406 transitions. [2022-10-16 05:35:22,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 4.0) internal successors, (412), 103 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:35:22,325 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 406 transitions. [2022-10-16 05:35:22,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-10-16 05:35:22,331 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:35:22,332 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:35:22,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-10-16 05:35:22,545 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,SelfDestructingSolverStorable11 [2022-10-16 05:35:22,546 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:35:22,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:35:22,547 INFO L85 PathProgramCache]: Analyzing trace with hash 483276662, now seen corresponding path program 1 times [2022-10-16 05:35:22,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:35:22,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415932331] [2022-10-16 05:35:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:35:22,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:35:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:35:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17955 trivial. 0 not checked. [2022-10-16 05:35:23,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:35:23,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415932331] [2022-10-16 05:35:23,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415932331] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:35:23,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 05:35:23,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 05:35:23,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759665556] [2022-10-16 05:35:23,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:35:23,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 05:35:23,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:35:23,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 05:35:23,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 05:35:23,327 INFO L87 Difference]: Start difference. First operand 402 states and 406 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:35:23,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:35:23,367 INFO L93 Difference]: Finished difference Result 405 states and 408 transitions. [2022-10-16 05:35:23,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 05:35:23,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 391 [2022-10-16 05:35:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:35:23,371 INFO L225 Difference]: With dead ends: 405 [2022-10-16 05:35:23,371 INFO L226 Difference]: Without dead ends: 405 [2022-10-16 05:35:23,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-16 05:35:23,373 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 05:35:23,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 39 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 05:35:23,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-10-16 05:35:23,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 403. [2022-10-16 05:35:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 400 states have (on average 1.0175) internal successors, (407), 402 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:35:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 407 transitions. [2022-10-16 05:35:23,384 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 407 transitions. Word has length 391 [2022-10-16 05:35:23,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:35:23,385 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 407 transitions. [2022-10-16 05:35:23,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:35:23,385 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 407 transitions. [2022-10-16 05:35:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-10-16 05:35:23,394 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:35:23,394 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:35:23,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-16 05:35:23,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:35:23,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:35:23,395 INFO L85 PathProgramCache]: Analyzing trace with hash 483276795, now seen corresponding path program 1 times [2022-10-16 05:35:23,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:35:23,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560336970] [2022-10-16 05:35:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:35:23,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:35:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:35:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:35:32,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:35:32,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560336970] [2022-10-16 05:35:32,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560336970] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:35:32,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080133279] [2022-10-16 05:35:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:35:32,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:35:32,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:35:32,405 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) [2022-10-16 05:35:32,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 05:35:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:35:32,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 97 conjunts are in the unsatisfiable core [2022-10-16 05:35:32,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:35:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:35:33,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:35:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:35:45,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080133279] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:35:45,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:35:45,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98, 98] total 195 [2022-10-16 05:35:45,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548754391] [2022-10-16 05:35:45,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:35:45,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 195 states [2022-10-16 05:35:45,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:35:45,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2022-10-16 05:35:45,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2022-10-16 05:35:45,383 INFO L87 Difference]: Start difference. First operand 403 states and 407 transitions. Second operand has 195 states, 195 states have (on average 3.98974358974359) internal successors, (778), 195 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:35:47,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:35:47,163 INFO L93 Difference]: Finished difference Result 791 states and 795 transitions. [2022-10-16 05:35:47,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2022-10-16 05:35:47,165 INFO L78 Accepts]: Start accepts. Automaton has has 195 states, 195 states have (on average 3.98974358974359) internal successors, (778), 195 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 391 [2022-10-16 05:35:47,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:35:47,169 INFO L225 Difference]: With dead ends: 791 [2022-10-16 05:35:47,169 INFO L226 Difference]: Without dead ends: 791 [2022-10-16 05:35:47,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2022-10-16 05:35:47,173 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 576 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 05:35:47,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 338 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 05:35:47,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-10-16 05:35:47,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 791. [2022-10-16 05:35:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 788 states have (on average 1.0088832487309645) internal successors, (795), 790 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:35:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 795 transitions. [2022-10-16 05:35:47,233 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 795 transitions. Word has length 391 [2022-10-16 05:35:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:35:47,234 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 795 transitions. [2022-10-16 05:35:47,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 195 states, 195 states have (on average 3.98974358974359) internal successors, (778), 195 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:35:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 795 transitions. [2022-10-16 05:35:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2022-10-16 05:35:47,260 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:35:47,261 INFO L195 NwaCegarLoop]: trace histogram [192, 192, 192, 192, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:35:47,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-10-16 05:35:47,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 05:35:47,476 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:35:47,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:35:47,478 INFO L85 PathProgramCache]: Analyzing trace with hash -4849800, now seen corresponding path program 2 times [2022-10-16 05:35:47,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:35:47,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883877426] [2022-10-16 05:35:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:35:47,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:35:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:36:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 73536 backedges. 0 proven. 73536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:36:21,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:36:21,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883877426] [2022-10-16 05:36:21,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883877426] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:36:21,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392890945] [2022-10-16 05:36:21,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 05:36:21,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:36:21,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:36:21,631 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) [2022-10-16 05:36:21,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 05:36:21,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 05:36:21,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 05:36:21,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 05:36:21,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:36:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 73536 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73536 trivial. 0 not checked. [2022-10-16 05:36:25,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 05:36:25,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392890945] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:36:25,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 05:36:25,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [195] total 197 [2022-10-16 05:36:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964867353] [2022-10-16 05:36:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:36:25,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 05:36:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:36:25,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 05:36:25,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18919, Invalid=19693, Unknown=0, NotChecked=0, Total=38612 [2022-10-16 05:36:25,893 INFO L87 Difference]: Start difference. First operand 791 states and 795 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:36:25,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:36:25,897 INFO L93 Difference]: Finished difference Result 790 states and 794 transitions. [2022-10-16 05:36:25,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 05:36:25,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 779 [2022-10-16 05:36:25,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:36:25,903 INFO L225 Difference]: With dead ends: 790 [2022-10-16 05:36:25,903 INFO L226 Difference]: Without dead ends: 788 [2022-10-16 05:36:25,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 973 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=18919, Invalid=19693, Unknown=0, NotChecked=0, Total=38612 [2022-10-16 05:36:25,908 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 05:36:25,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 24 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2022-10-16 05:36:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-10-16 05:36:25,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2022-10-16 05:36:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 786 states have (on average 1.0063613231552162) internal successors, (791), 787 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:36:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 791 transitions. [2022-10-16 05:36:25,926 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 791 transitions. Word has length 779 [2022-10-16 05:36:25,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:36:25,927 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 791 transitions. [2022-10-16 05:36:25,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:36:25,927 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 791 transitions. [2022-10-16 05:36:25,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2022-10-16 05:36:25,934 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:36:25,934 INFO L195 NwaCegarLoop]: trace histogram [192, 192, 192, 192, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:36:25,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 05:36:26,135 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,SelfDestructingSolverStorable14 [2022-10-16 05:36:26,136 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:36:26,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:36:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash -367965800, now seen corresponding path program 1 times [2022-10-16 05:36:26,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:36:26,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456211683] [2022-10-16 05:36:26,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:36:26,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:36:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:37:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 73538 backedges. 0 proven. 73536 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 05:37:00,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:37:00,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456211683] [2022-10-16 05:37:00,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456211683] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:37:00,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658736996] [2022-10-16 05:37:00,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:37:00,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:37:00,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:37:00,517 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 05:37:00,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 05:37:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:37:01,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 2773 conjuncts, 194 conjunts are in the unsatisfiable core [2022-10-16 05:37:01,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:37:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 73538 backedges. 0 proven. 73536 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 05:37:02,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:37:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 73538 backedges. 0 proven. 73536 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 05:37:54,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658736996] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:37:54,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:37:54,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [195, 195, 195] total 389 [2022-10-16 05:37:54,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50258057] [2022-10-16 05:37:54,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:37:54,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 389 states [2022-10-16 05:37:54,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:37:54,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 389 interpolants. [2022-10-16 05:37:54,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75466, Invalid=75466, Unknown=0, NotChecked=0, Total=150932 [2022-10-16 05:37:54,645 INFO L87 Difference]: Start difference. First operand 788 states and 791 transitions. Second operand has 389 states, 389 states have (on average 3.9974293059125965) internal successors, (1555), 389 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:38:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:38:05,226 INFO L93 Difference]: Finished difference Result 1564 states and 1567 transitions. [2022-10-16 05:38:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 388 states. [2022-10-16 05:38:05,228 INFO L78 Accepts]: Start accepts. Automaton has has 389 states, 389 states have (on average 3.9974293059125965) internal successors, (1555), 389 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 781 [2022-10-16 05:38:05,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:38:05,237 INFO L225 Difference]: With dead ends: 1564 [2022-10-16 05:38:05,237 INFO L226 Difference]: Without dead ends: 1564 [2022-10-16 05:38:05,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1755 GetRequests, 1368 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 67.4s TimeCoverageRelationStatistics Valid=75466, Invalid=75466, Unknown=0, NotChecked=0, Total=150932 [2022-10-16 05:38:05,248 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1158 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-16 05:38:05,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 432 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-16 05:38:05,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2022-10-16 05:38:05,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1564. [2022-10-16 05:38:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1562 states have (on average 1.003201024327785) internal successors, (1567), 1563 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:38:05,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 1567 transitions. [2022-10-16 05:38:05,280 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 1567 transitions. Word has length 781 [2022-10-16 05:38:05,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:38:05,281 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 1567 transitions. [2022-10-16 05:38:05,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 389 states, 389 states have (on average 3.9974293059125965) internal successors, (1555), 389 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:38:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 1567 transitions. [2022-10-16 05:38:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1558 [2022-10-16 05:38:05,303 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:38:05,304 INFO L195 NwaCegarLoop]: trace histogram [386, 386, 386, 386, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:38:05,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 05:38:05,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 05:38:05,519 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 05:38:05,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:38:05,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1387676014, now seen corresponding path program 2 times [2022-10-16 05:38:05,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:38:05,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438554931] [2022-10-16 05:38:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:38:05,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:38:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat