/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/termination-15/cstrncpy_diffterm_alloca.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:53:27,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:53:27,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:53:27,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:53:27,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:53:27,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:53:27,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:53:27,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:53:27,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:53:27,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:53:27,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:53:27,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:53:27,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:53:27,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:53:27,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:53:27,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:53:27,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:53:27,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:53:27,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:53:27,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:53:27,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:53:27,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:53:27,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:53:27,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:53:27,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:53:27,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:53:27,701 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:53:27,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:53:27,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:53:27,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:53:27,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:53:27,703 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:53:27,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:53:27,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:53:27,705 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:53:27,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:53:27,705 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:53:27,705 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:53:27,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:53:27,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:53:27,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:53:27,706 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:53:27,706 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:53:27,706 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:53:27,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:53:27,707 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:53:27,707 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:53:27,707 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:53:27,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:53:27,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:53:27,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:53:27,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:53:27,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:53:27,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:53:27,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:53:27,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:53:27,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:53:28,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:53:28,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:53:28,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:53:28,247 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:53:28,248 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:53:28,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/cstrncpy_diffterm_alloca.i [2022-10-15 17:53:28,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c86da37/559b9d9990ca41eba2abb8c7ab861b95/FLAG16ab9271f [2022-10-15 17:53:29,012 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:53:29,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/cstrncpy_diffterm_alloca.i [2022-10-15 17:53:29,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c86da37/559b9d9990ca41eba2abb8c7ab861b95/FLAG16ab9271f [2022-10-15 17:53:29,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c86da37/559b9d9990ca41eba2abb8c7ab861b95 [2022-10-15 17:53:29,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:53:29,280 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:53:29,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:53:29,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:53:29,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:53:29,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:29,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf65746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29, skipping insertion in model container [2022-10-15 17:53:29,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:29,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:53:29,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:53:29,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:53:29,890 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:53:29,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:53:29,989 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:53:29,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29 WrapperNode [2022-10-15 17:53:29,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:53:29,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:53:29,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:53:29,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:53:30,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:30,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:30,042 INFO L138 Inliner]: procedures = 152, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2022-10-15 17:53:30,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:53:30,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:53:30,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:53:30,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:53:30,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:30,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:30,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:30,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:30,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:30,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:30,070 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:30,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:30,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:53:30,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:53:30,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:53:30,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:53:30,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29" (1/1) ... [2022-10-15 17:53:30,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:53:30,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:53:30,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:53:30,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:53:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:53:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:53:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:53:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:53:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:53:30,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:53:30,286 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:53:30,289 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:53:30,663 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:53:30,672 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:53:30,672 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 17:53:30,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:53:30 BoogieIcfgContainer [2022-10-15 17:53:30,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:53:30,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:53:30,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:53:30,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:53:30,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:53:29" (1/3) ... [2022-10-15 17:53:30,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f05f928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:53:30, skipping insertion in model container [2022-10-15 17:53:30,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:53:29" (2/3) ... [2022-10-15 17:53:30,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f05f928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:53:30, skipping insertion in model container [2022-10-15 17:53:30,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:53:30" (3/3) ... [2022-10-15 17:53:30,686 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncpy_diffterm_alloca.i [2022-10-15 17:53:30,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:53:30,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-10-15 17:53:30,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:53:30,810 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;@3f6e663e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:53:30,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-10-15 17:53:30,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 28 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) [2022-10-15 17:53:30,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:53:30,823 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:30,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:53:30,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:30,833 INFO L85 PathProgramCache]: Analyzing trace with hash 889510731, now seen corresponding path program 1 times [2022-10-15 17:53:30,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:30,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780447125] [2022-10-15 17:53:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:30,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:31,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:31,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780447125] [2022-10-15 17:53:31,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780447125] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:31,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:31,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:53:31,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117636120] [2022-10-15 17:53:31,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:31,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:53:31,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:53:31,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:53:31,197 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 28 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) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:31,270 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-10-15 17:53:31,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:53:31,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-10-15 17:53:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:31,284 INFO L225 Difference]: With dead ends: 28 [2022-10-15 17:53:31,285 INFO L226 Difference]: Without dead ends: 26 [2022-10-15 17:53:31,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:53:31,292 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:31,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:53:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-15 17:53:31,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-10-15 17:53:31,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 25 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) [2022-10-15 17:53:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-10-15 17:53:31,332 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 6 [2022-10-15 17:53:31,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:31,332 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-10-15 17:53:31,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-10-15 17:53:31,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:53:31,333 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:31,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:53:31,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:53:31,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:31,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:31,335 INFO L85 PathProgramCache]: Analyzing trace with hash 889510732, now seen corresponding path program 1 times [2022-10-15 17:53:31,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:31,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139351660] [2022-10-15 17:53:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:31,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:31,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:31,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139351660] [2022-10-15 17:53:31,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139351660] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:31,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:31,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:53:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847550193] [2022-10-15 17:53:31,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:31,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:53:31,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:31,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:53:31,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:53:31,644 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:31,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:31,697 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-10-15 17:53:31,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:53:31,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2022-10-15 17:53:31,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:31,700 INFO L225 Difference]: With dead ends: 25 [2022-10-15 17:53:31,700 INFO L226 Difference]: Without dead ends: 25 [2022-10-15 17:53:31,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:53:31,706 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 46 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:31,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 23 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:53:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-10-15 17:53:31,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-10-15 17:53:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-10-15 17:53:31,713 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 6 [2022-10-15 17:53:31,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:31,714 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-10-15 17:53:31,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-10-15 17:53:31,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 17:53:31,715 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:31,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:31,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:53:31,716 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:31,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:31,717 INFO L85 PathProgramCache]: Analyzing trace with hash -534039733, now seen corresponding path program 1 times [2022-10-15 17:53:31,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:31,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454343946] [2022-10-15 17:53:31,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:31,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:31,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:31,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:31,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454343946] [2022-10-15 17:53:31,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454343946] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:31,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:31,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:53:31,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402495721] [2022-10-15 17:53:31,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:31,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:53:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:31,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:53:31,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:53:31,889 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-10-15 17:53:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:31,955 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-10-15 17:53:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:53:31,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 9 [2022-10-15 17:53:31,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:31,957 INFO L225 Difference]: With dead ends: 24 [2022-10-15 17:53:31,958 INFO L226 Difference]: Without dead ends: 24 [2022-10-15 17:53:31,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:53:31,960 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 38 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:31,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 37 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:53:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-10-15 17:53:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-10-15 17:53:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-10-15 17:53:31,967 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2022-10-15 17:53:31,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:31,967 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-10-15 17:53:31,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-10-15 17:53:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-10-15 17:53:31,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 17:53:31,968 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:31,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:31,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:53:31,969 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:31,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:31,970 INFO L85 PathProgramCache]: Analyzing trace with hash -534039732, now seen corresponding path program 1 times [2022-10-15 17:53:31,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:31,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631039050] [2022-10-15 17:53:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:31,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:32,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:32,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631039050] [2022-10-15 17:53:32,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631039050] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:32,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:32,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:53:32,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685063660] [2022-10-15 17:53:32,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:32,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:53:32,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:32,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:53:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:53:32,372 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2022-10-15 17:53:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:32,540 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-10-15 17:53:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:53:32,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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 9 [2022-10-15 17:53:32,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:32,543 INFO L225 Difference]: With dead ends: 34 [2022-10-15 17:53:32,543 INFO L226 Difference]: Without dead ends: 34 [2022-10-15 17:53:32,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:53:32,545 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:32,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 58 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:53:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-10-15 17:53:32,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2022-10-15 17:53:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.55) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-10-15 17:53:32,552 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 9 [2022-10-15 17:53:32,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:32,553 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-10-15 17:53:32,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2022-10-15 17:53:32,554 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-10-15 17:53:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:53:32,554 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:32,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:32,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:53:32,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:32,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:32,556 INFO L85 PathProgramCache]: Analyzing trace with hash 624637463, now seen corresponding path program 1 times [2022-10-15 17:53:32,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:32,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143786233] [2022-10-15 17:53:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:32,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:32,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:32,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143786233] [2022-10-15 17:53:32,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143786233] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:32,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:32,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:53:32,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896578362] [2022-10-15 17:53:32,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:32,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:53:32,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:32,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:53:32,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:53:32,923 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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) [2022-10-15 17:53:33,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:33,090 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2022-10-15 17:53:33,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:53:33,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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 10 [2022-10-15 17:53:33,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:33,092 INFO L225 Difference]: With dead ends: 47 [2022-10-15 17:53:33,093 INFO L226 Difference]: Without dead ends: 47 [2022-10-15 17:53:33,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-10-15 17:53:33,095 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 51 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:33,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 94 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:53:33,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-15 17:53:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2022-10-15 17:53:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2022-10-15 17:53:33,103 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 10 [2022-10-15 17:53:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:33,103 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2022-10-15 17:53:33,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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) [2022-10-15 17:53:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2022-10-15 17:53:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:53:33,104 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:33,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:33,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:53:33,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:33,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:33,106 INFO L85 PathProgramCache]: Analyzing trace with hash 624637464, now seen corresponding path program 1 times [2022-10-15 17:53:33,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:33,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710558403] [2022-10-15 17:53:33,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:33,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:33,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:33,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710558403] [2022-10-15 17:53:33,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710558403] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:33,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:33,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:53:33,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471816439] [2022-10-15 17:53:33,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:33,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:53:33,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:53:33,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:53:33,307 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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) [2022-10-15 17:53:33,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:33,384 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2022-10-15 17:53:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:53:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 10 [2022-10-15 17:53:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:33,387 INFO L225 Difference]: With dead ends: 44 [2022-10-15 17:53:33,387 INFO L226 Difference]: Without dead ends: 44 [2022-10-15 17:53:33,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:53:33,389 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 66 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:33,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 56 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:53:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-15 17:53:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-10-15 17:53:33,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-10-15 17:53:33,396 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 10 [2022-10-15 17:53:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:33,396 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-10-15 17:53:33,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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) [2022-10-15 17:53:33,397 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-10-15 17:53:33,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:53:33,397 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:33,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 17:53:33,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:33,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1895322471, now seen corresponding path program 1 times [2022-10-15 17:53:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:33,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501669077] [2022-10-15 17:53:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:33,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:33,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:33,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501669077] [2022-10-15 17:53:33,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501669077] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:33,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:33,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:53:33,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880227162] [2022-10-15 17:53:33,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:33,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:53:33,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:33,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:53:33,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:53:33,515 INFO L87 Difference]: Start difference. First operand 37 states and 48 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) [2022-10-15 17:53:33,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:33,589 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-10-15 17:53:33,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:53:33,589 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 10 [2022-10-15 17:53:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:33,594 INFO L225 Difference]: With dead ends: 36 [2022-10-15 17:53:33,596 INFO L226 Difference]: Without dead ends: 36 [2022-10-15 17:53:33,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:53:33,602 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 32 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:33,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 36 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:53:33,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-15 17:53:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2022-10-15 17:53:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-10-15 17:53:33,614 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 10 [2022-10-15 17:53:33,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:33,615 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-10-15 17:53:33,615 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) [2022-10-15 17:53:33,615 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-10-15 17:53:33,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-15 17:53:33,617 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:33,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:33,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 17:53:33,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:33,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:33,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2111103955, now seen corresponding path program 1 times [2022-10-15 17:53:33,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:33,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778387128] [2022-10-15 17:53:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:33,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:33,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778387128] [2022-10-15 17:53:33,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778387128] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:33,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:33,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:53:33,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700652018] [2022-10-15 17:53:33,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:33,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:53:33,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:33,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:53:33,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:53:33,693 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:33,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:33,717 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-10-15 17:53:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:53:33,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-15 17:53:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:33,718 INFO L225 Difference]: With dead ends: 26 [2022-10-15 17:53:33,719 INFO L226 Difference]: Without dead ends: 26 [2022-10-15 17:53:33,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:53:33,720 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:33,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 49 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:53:33,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-15 17:53:33,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-10-15 17:53:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 25 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) [2022-10-15 17:53:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-10-15 17:53:33,725 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 11 [2022-10-15 17:53:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:33,726 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-10-15 17:53:33,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-10-15 17:53:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 17:53:33,728 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:33,729 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:33,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 17:53:33,731 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:33,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:33,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1518608411, now seen corresponding path program 1 times [2022-10-15 17:53:33,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:33,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6948546] [2022-10-15 17:53:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:33,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:33,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:33,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6948546] [2022-10-15 17:53:33,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6948546] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:33,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:33,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:53:33,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896550238] [2022-10-15 17:53:33,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:33,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:53:33,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:53:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:53:33,838 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:33,870 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2022-10-15 17:53:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:53:33,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2022-10-15 17:53:33,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:33,871 INFO L225 Difference]: With dead ends: 48 [2022-10-15 17:53:33,872 INFO L226 Difference]: Without dead ends: 48 [2022-10-15 17:53:33,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:53:33,873 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 49 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:33,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 66 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:53:33,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-15 17:53:33,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2022-10-15 17:53:33,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-10-15 17:53:33,879 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 13 [2022-10-15 17:53:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:33,879 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-10-15 17:53:33,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-10-15 17:53:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 17:53:33,880 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:33,880 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:33,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 17:53:33,881 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:33,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:33,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1911635421, now seen corresponding path program 1 times [2022-10-15 17:53:33,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:33,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872023519] [2022-10-15 17:53:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:33,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:34,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:34,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872023519] [2022-10-15 17:53:34,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872023519] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:34,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:34,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-15 17:53:34,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756098682] [2022-10-15 17:53:34,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:34,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:53:34,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:34,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:53:34,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:53:34,166 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:34,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:34,304 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2022-10-15 17:53:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:53:34,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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 13 [2022-10-15 17:53:34,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:34,306 INFO L225 Difference]: With dead ends: 59 [2022-10-15 17:53:34,306 INFO L226 Difference]: Without dead ends: 59 [2022-10-15 17:53:34,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:53:34,308 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 38 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:34,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 129 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:53:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-15 17:53:34,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2022-10-15 17:53:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-10-15 17:53:34,327 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 13 [2022-10-15 17:53:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:34,328 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-10-15 17:53:34,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-10-15 17:53:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 17:53:34,329 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:34,330 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:34,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 17:53:34,330 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:34,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1210570843, now seen corresponding path program 1 times [2022-10-15 17:53:34,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:34,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984822480] [2022-10-15 17:53:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:34,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:34,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:34,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:34,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984822480] [2022-10-15 17:53:34,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984822480] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:53:34,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125408419] [2022-10-15 17:53:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:34,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:53:34,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:53:34,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:53:34,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:53:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:34,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-15 17:53:34,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:53:35,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2022-10-15 17:53:35,318 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 17:53:35,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2022-10-15 17:53:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:35,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:53:35,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2022-10-15 17:53:35,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-10-15 17:53:35,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-10-15 17:53:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:35,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125408419] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:53:35,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:53:35,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2022-10-15 17:53:35,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464481208] [2022-10-15 17:53:35,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:53:35,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-15 17:53:35,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:35,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-15 17:53:35,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-10-15 17:53:35,809 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:36,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:36,061 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2022-10-15 17:53:36,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 17:53:36,061 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 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 13 [2022-10-15 17:53:36,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:36,062 INFO L225 Difference]: With dead ends: 52 [2022-10-15 17:53:36,062 INFO L226 Difference]: Without dead ends: 52 [2022-10-15 17:53:36,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-10-15 17:53:36,064 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:36,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 166 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2022-10-15 17:53:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-15 17:53:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2022-10-15 17:53:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.325) internal successors, (53), 44 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:36,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2022-10-15 17:53:36,069 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 13 [2022-10-15 17:53:36,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:36,069 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2022-10-15 17:53:36,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2022-10-15 17:53:36,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 17:53:36,070 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:36,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:36,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 17:53:36,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-15 17:53:36,285 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:36,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:36,286 INFO L85 PathProgramCache]: Analyzing trace with hash 167227485, now seen corresponding path program 1 times [2022-10-15 17:53:36,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:36,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388696166] [2022-10-15 17:53:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:36,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:36,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:36,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388696166] [2022-10-15 17:53:36,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388696166] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:36,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:36,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:53:36,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170445522] [2022-10-15 17:53:36,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:36,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:53:36,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:53:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:53:36,368 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:36,435 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2022-10-15 17:53:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:53:36,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 17:53:36,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:36,436 INFO L225 Difference]: With dead ends: 46 [2022-10-15 17:53:36,436 INFO L226 Difference]: Without dead ends: 46 [2022-10-15 17:53:36,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:53:36,437 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:36,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 60 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:53:36,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-10-15 17:53:36,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2022-10-15 17:53:36,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.3) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-10-15 17:53:36,472 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 14 [2022-10-15 17:53:36,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:36,473 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-10-15 17:53:36,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:36,473 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-10-15 17:53:36,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 17:53:36,474 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:36,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:36,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-15 17:53:36,475 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:36,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash 167227486, now seen corresponding path program 1 times [2022-10-15 17:53:36,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:36,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760400973] [2022-10-15 17:53:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:36,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:36,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:36,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760400973] [2022-10-15 17:53:36,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760400973] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:36,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:36,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 17:53:36,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646366453] [2022-10-15 17:53:36,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:36,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:53:36,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:36,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:53:36,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:53:36,603 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:36,683 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-10-15 17:53:36,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:53:36,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 17:53:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:36,685 INFO L225 Difference]: With dead ends: 57 [2022-10-15 17:53:36,685 INFO L226 Difference]: Without dead ends: 57 [2022-10-15 17:53:36,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:53:36,686 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:36,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 117 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:53:36,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-15 17:53:36,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2022-10-15 17:53:36,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:36,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2022-10-15 17:53:36,692 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 14 [2022-10-15 17:53:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:36,692 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2022-10-15 17:53:36,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:36,693 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2022-10-15 17:53:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 17:53:36,694 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:36,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:36,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-15 17:53:36,694 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:36,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:36,695 INFO L85 PathProgramCache]: Analyzing trace with hash 868292064, now seen corresponding path program 1 times [2022-10-15 17:53:36,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:36,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270146780] [2022-10-15 17:53:36,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:36,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:37,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:37,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270146780] [2022-10-15 17:53:37,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270146780] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:37,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:37,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-15 17:53:37,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326121927] [2022-10-15 17:53:37,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:37,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 17:53:37,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 17:53:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-10-15 17:53:37,159 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:37,407 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-10-15 17:53:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:53:37,408 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 17:53:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:37,409 INFO L225 Difference]: With dead ends: 57 [2022-10-15 17:53:37,409 INFO L226 Difference]: Without dead ends: 57 [2022-10-15 17:53:37,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:53:37,410 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 46 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:37,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 76 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:53:37,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-15 17:53:37,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-10-15 17:53:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.25) internal successors, (65), 55 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-10-15 17:53:37,415 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 14 [2022-10-15 17:53:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:37,415 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-10-15 17:53:37,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:37,416 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-10-15 17:53:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 17:53:37,416 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:37,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:37,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-15 17:53:37,417 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:37,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1127009503, now seen corresponding path program 1 times [2022-10-15 17:53:37,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:37,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360882586] [2022-10-15 17:53:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:37,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:37,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:37,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360882586] [2022-10-15 17:53:37,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360882586] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:53:37,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960548880] [2022-10-15 17:53:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:37,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:53:37,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:53:37,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:53:37,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:53:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:37,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 40 conjunts are in the unsatisfiable core [2022-10-15 17:53:37,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:53:37,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:53:37,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-10-15 17:53:37,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-15 17:53:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:38,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:53:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:38,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960548880] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:53:38,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:53:38,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-10-15 17:53:38,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577809232] [2022-10-15 17:53:38,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:53:38,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 17:53:38,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:38,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 17:53:38,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:53:38,296 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:38,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:38,557 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2022-10-15 17:53:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:53:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 17:53:38,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:38,559 INFO L225 Difference]: With dead ends: 69 [2022-10-15 17:53:38,559 INFO L226 Difference]: Without dead ends: 69 [2022-10-15 17:53:38,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2022-10-15 17:53:38,560 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 163 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:38,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 99 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:53:38,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-15 17:53:38,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2022-10-15 17:53:38,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2022-10-15 17:53:38,565 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 14 [2022-10-15 17:53:38,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:38,566 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2022-10-15 17:53:38,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:38,566 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2022-10-15 17:53:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 17:53:38,567 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:38,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:38,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 17:53:38,782 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,SelfDestructingSolverStorable14 [2022-10-15 17:53:38,783 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:38,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:38,784 INFO L85 PathProgramCache]: Analyzing trace with hash 319361928, now seen corresponding path program 1 times [2022-10-15 17:53:38,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:38,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075040080] [2022-10-15 17:53:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:38,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:53:38,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:38,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075040080] [2022-10-15 17:53:38,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075040080] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:53:38,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:53:38,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:53:38,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173443623] [2022-10-15 17:53:38,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:53:38,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:53:38,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:38,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:53:38,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:53:38,971 INFO L87 Difference]: Start difference. First operand 55 states and 64 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) [2022-10-15 17:53:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:38,987 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2022-10-15 17:53:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:53:38,988 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 15 [2022-10-15 17:53:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:38,988 INFO L225 Difference]: With dead ends: 54 [2022-10-15 17:53:38,989 INFO L226 Difference]: Without dead ends: 34 [2022-10-15 17:53:38,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:53:38,990 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:38,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:53:38,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-10-15 17:53:38,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-10-15 17:53:38,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-10-15 17:53:38,993 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 15 [2022-10-15 17:53:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:38,994 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-10-15 17:53:38,994 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) [2022-10-15 17:53:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-10-15 17:53:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-15 17:53:38,995 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:38,995 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:38,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-15 17:53:38,995 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:38,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash 980746174, now seen corresponding path program 2 times [2022-10-15 17:53:38,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:38,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564137791] [2022-10-15 17:53:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:38,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:39,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:39,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564137791] [2022-10-15 17:53:39,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564137791] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:53:39,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384212218] [2022-10-15 17:53:39,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:53:39,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:53:39,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:53:39,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:53:39,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 17:53:39,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:53:39,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:53:39,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 58 conjunts are in the unsatisfiable core [2022-10-15 17:53:39,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:53:39,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-15 17:53:39,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-10-15 17:53:39,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-15 17:53:40,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-15 17:53:40,355 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 17:53:40,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-10-15 17:53:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:40,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:53:41,318 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 17:53:41,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2022-10-15 17:53:41,340 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 17:53:41,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-10-15 17:53:41,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-10-15 17:53:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:41,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384212218] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:53:41,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:53:41,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-10-15 17:53:41,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627633902] [2022-10-15 17:53:41,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:53:41,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-10-15 17:53:41,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-10-15 17:53:41,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=759, Unknown=23, NotChecked=0, Total=870 [2022-10-15 17:53:41,450 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:42,718 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-10-15 17:53:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:53:42,719 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-10-15 17:53:42,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:42,720 INFO L225 Difference]: With dead ends: 48 [2022-10-15 17:53:42,720 INFO L226 Difference]: Without dead ends: 48 [2022-10-15 17:53:42,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=260, Invalid=1523, Unknown=23, NotChecked=0, Total=1806 [2022-10-15 17:53:42,722 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 48 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:42,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 155 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 231 Invalid, 0 Unknown, 69 Unchecked, 0.2s Time] [2022-10-15 17:53:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-15 17:53:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2022-10-15 17:53:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-10-15 17:53:42,725 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 17 [2022-10-15 17:53:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:42,726 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-10-15 17:53:42,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:42,726 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-10-15 17:53:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-15 17:53:42,727 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:42,727 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:42,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-15 17:53:42,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:53:42,929 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:42,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:42,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1619080872, now seen corresponding path program 1 times [2022-10-15 17:53:42,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:42,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416310455] [2022-10-15 17:53:42,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:43,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:43,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416310455] [2022-10-15 17:53:43,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416310455] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:53:43,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286596135] [2022-10-15 17:53:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:43,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:53:43,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:53:43,524 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:53:43,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:53:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:43,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 63 conjunts are in the unsatisfiable core [2022-10-15 17:53:43,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:53:43,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:53:43,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-10-15 17:53:43,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-15 17:53:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:44,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:53:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:44,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286596135] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:53:44,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:53:44,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2022-10-15 17:53:44,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217756225] [2022-10-15 17:53:44,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:53:44,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-10-15 17:53:44,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:44,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-10-15 17:53:44,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2022-10-15 17:53:44,571 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 30 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:46,458 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-10-15 17:53:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-15 17:53:46,459 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 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 18 [2022-10-15 17:53:46,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:46,461 INFO L225 Difference]: With dead ends: 50 [2022-10-15 17:53:46,461 INFO L226 Difference]: Without dead ends: 22 [2022-10-15 17:53:46,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=407, Invalid=1945, Unknown=0, NotChecked=0, Total=2352 [2022-10-15 17:53:46,463 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 81 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:46,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 132 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:53:46,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-10-15 17:53:46,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-10-15 17:53:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-10-15 17:53:46,466 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 18 [2022-10-15 17:53:46,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:46,467 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-10-15 17:53:46,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:46,467 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-10-15 17:53:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 17:53:46,468 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:53:46,468 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:46,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 17:53:46,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-15 17:53:46,684 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-10-15 17:53:46,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:53:46,685 INFO L85 PathProgramCache]: Analyzing trace with hash -196730025, now seen corresponding path program 3 times [2022-10-15 17:53:46,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:53:46,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879560240] [2022-10-15 17:53:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:53:46,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:53:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:53:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:53:47,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:53:47,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879560240] [2022-10-15 17:53:47,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879560240] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:53:47,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861877376] [2022-10-15 17:53:47,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:53:47,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:53:47,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:53:47,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:53:47,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:53:47,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-15 17:53:47,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:53:47,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 61 conjunts are in the unsatisfiable core [2022-10-15 17:53:47,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:53:47,800 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-15 17:53:47,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-10-15 17:53:47,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-15 17:53:47,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-10-15 17:53:48,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-10-15 17:53:48,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-10-15 17:53:48,445 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 17:53:48,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2022-10-15 17:53:48,590 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:53:48,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:53:49,350 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 17:53:49,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-10-15 17:53:49,365 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 17:53:49,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 34 [2022-10-15 17:53:49,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-15 17:53:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:53:49,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861877376] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:53:49,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:53:49,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 34 [2022-10-15 17:53:49,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700447386] [2022-10-15 17:53:49,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:53:49,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-15 17:53:49,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:53:49,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-15 17:53:49,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1029, Unknown=11, NotChecked=0, Total=1190 [2022-10-15 17:53:49,473 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 35 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:53:50,575 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-10-15 17:53:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-15 17:53:50,576 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 35 states have internal predecessors, (55), 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 [2022-10-15 17:53:50,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:53:50,576 INFO L225 Difference]: With dead ends: 21 [2022-10-15 17:53:50,576 INFO L226 Difference]: Without dead ends: 0 [2022-10-15 17:53:50,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=396, Invalid=2043, Unknown=11, NotChecked=0, Total=2450 [2022-10-15 17:53:50,580 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:53:50,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 76 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 96 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-10-15 17:53:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-15 17:53:50,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-15 17:53:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-15 17:53:50,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-10-15 17:53:50,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:53:50,582 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-15 17:53:50,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:53:50,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-15 17:53:50,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-15 17:53:50,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2022-10-15 17:53:50,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2022-10-15 17:53:50,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2022-10-15 17:53:50,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2022-10-15 17:53:50,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2022-10-15 17:53:50,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2022-10-15 17:53:50,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2022-10-15 17:53:50,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2022-10-15 17:53:50,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2022-10-15 17:53:50,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:53:50,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:53:50,812 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:53:50,818 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 17:53:50,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 05:53:50 BoogieIcfgContainer [2022-10-15 17:53:50,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 17:53:50,826 INFO L158 Benchmark]: Toolchain (without parser) took 21549.33ms. Allocated memory was 158.3MB in the beginning and 275.8MB in the end (delta: 117.4MB). Free memory was 130.0MB in the beginning and 99.7MB in the end (delta: 30.3MB). Peak memory consumption was 148.7MB. Max. memory is 8.0GB. [2022-10-15 17:53:50,826 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 158.3MB. Free memory is still 128.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 17:53:50,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 706.59ms. Allocated memory is still 158.3MB. Free memory was 129.8MB in the beginning and 112.9MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-10-15 17:53:50,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.69ms. Allocated memory is still 158.3MB. Free memory was 112.7MB in the beginning and 110.9MB in the end (delta: 1.9MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 17:53:50,827 INFO L158 Benchmark]: Boogie Preprocessor took 30.35ms. Allocated memory is still 158.3MB. Free memory was 110.9MB in the beginning and 109.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 17:53:50,827 INFO L158 Benchmark]: RCFGBuilder took 600.62ms. Allocated memory is still 158.3MB. Free memory was 109.5MB in the beginning and 133.2MB in the end (delta: -23.7MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. [2022-10-15 17:53:50,828 INFO L158 Benchmark]: TraceAbstraction took 20146.18ms. Allocated memory was 158.3MB in the beginning and 275.8MB in the end (delta: 117.4MB). Free memory was 132.1MB in the beginning and 99.7MB in the end (delta: 32.4MB). Peak memory consumption was 151.1MB. Max. memory is 8.0GB. [2022-10-15 17:53:50,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 158.3MB. Free memory is still 128.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 706.59ms. Allocated memory is still 158.3MB. Free memory was 129.8MB in the beginning and 112.9MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.69ms. Allocated memory is still 158.3MB. Free memory was 112.7MB in the beginning and 110.9MB in the end (delta: 1.9MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.35ms. Allocated memory is still 158.3MB. Free memory was 110.9MB in the beginning and 109.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 600.62ms. Allocated memory is still 158.3MB. Free memory was 109.5MB in the beginning and 133.2MB in the end (delta: -23.7MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. * TraceAbstraction took 20146.18ms. Allocated memory was 158.3MB in the beginning and 275.8MB in the end (delta: 117.4MB). Free memory was 132.1MB in the beginning and 99.7MB in the end (delta: 32.4MB). Peak memory consumption was 151.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 382]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 20.0s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 839 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 839 mSDsluCounter, 1490 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 121 IncrementalHoareTripleChecker+Unchecked, 1165 mSDsCounter, 205 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1279 IncrementalHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 205 mSolverCounterUnsat, 325 mSDtfsCounter, 1279 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 367 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=14, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 106 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 320 NumberOfCodeBlocks, 320 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 374 ConstructedInterpolants, 32 QuantifiedInterpolants, 4348 SizeOfPredicates, 92 NumberOfNonLiveVariables, 823 ConjunctsInSsa, 255 ConjunctsInUnsatCore, 29 InterpolantComputations, 14 PerfectInterpolantSequences, 7/107 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-15 17:53:50,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...