/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-programs/partial_mod_count_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:26:55,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:26:55,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:26:55,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:26:55,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:26:55,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:26:55,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:26:55,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:26:55,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:26:55,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:26:55,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:26:55,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:26:55,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:26:55,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:26:55,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:26:55,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:26:55,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:26:55,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:26:55,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:26:55,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:26:55,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:26:55,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:26:55,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:26:55,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:26:55,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 16:26:55,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:26:55,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:26:55,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:26:55,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:26:55,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:26:55,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:26:55,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:26:55,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:26:55,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:26:55,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:26:55,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:26:55,155 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 16:26:55,217 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:26:55,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:26:55,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:26:55,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:26:55,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:26:55,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:26:55,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:26:55,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:26:55,225 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:26:55,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:26:55,227 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:26:55,227 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:26:55,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:26:55,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:26:55,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:26:55,228 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:26:55,228 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:26:55,228 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:26:55,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:26:55,229 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:26:55,229 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:26:55,229 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:26:55,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:26:55,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:26:55,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:26:55,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:26:55,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:26:55,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:26:55,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:26:55,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:26:55,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:26:55,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:26:55,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:26:55,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:26:55,757 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:26:55,758 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:26:55,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_4.c [2022-10-15 16:26:55,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3992cd42/cb3e0782d4d640f38ba504c72d911ae3/FLAGa4fdd4bd1 [2022-10-15 16:26:56,501 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:26:56,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_4.c [2022-10-15 16:26:56,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3992cd42/cb3e0782d4d640f38ba504c72d911ae3/FLAGa4fdd4bd1 [2022-10-15 16:26:56,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3992cd42/cb3e0782d4d640f38ba504c72d911ae3 [2022-10-15 16:26:56,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:26:56,890 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:26:56,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:26:56,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:26:56,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:26:56,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:26:56" (1/1) ... [2022-10-15 16:26:56,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307eda9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:56, skipping insertion in model container [2022-10-15 16:26:56,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:26:56" (1/1) ... [2022-10-15 16:26:56,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:26:56,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:26:57,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_4.c[323,336] [2022-10-15 16:26:57,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:26:57,160 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:26:57,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_4.c[323,336] [2022-10-15 16:26:57,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:26:57,201 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:26:57,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57 WrapperNode [2022-10-15 16:26:57,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:26:57,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:26:57,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:26:57,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:26:57,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57" (1/1) ... [2022-10-15 16:26:57,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57" (1/1) ... [2022-10-15 16:26:57,250 INFO L138 Inliner]: procedures = 13, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-10-15 16:26:57,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:26:57,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:26:57,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:26:57,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:26:57,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57" (1/1) ... [2022-10-15 16:26:57,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57" (1/1) ... [2022-10-15 16:26:57,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57" (1/1) ... [2022-10-15 16:26:57,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57" (1/1) ... [2022-10-15 16:26:57,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57" (1/1) ... [2022-10-15 16:26:57,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57" (1/1) ... [2022-10-15 16:26:57,279 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57" (1/1) ... [2022-10-15 16:26:57,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57" (1/1) ... [2022-10-15 16:26:57,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:26:57,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:26:57,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:26:57,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:26:57,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57" (1/1) ... [2022-10-15 16:26:57,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:26:57,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:26:57,336 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 16:26:57,352 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 16:26:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:26:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:26:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 16:26:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:26:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:26:57,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:26:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:26:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 16:26:57,506 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:26:57,508 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:26:57,713 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:26:57,722 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:26:57,722 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 16:26:57,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:26:57 BoogieIcfgContainer [2022-10-15 16:26:57,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:26:57,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:26:57,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:26:57,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:26:57,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:26:56" (1/3) ... [2022-10-15 16:26:57,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdd0708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:26:57, skipping insertion in model container [2022-10-15 16:26:57,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:26:57" (2/3) ... [2022-10-15 16:26:57,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdd0708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:26:57, skipping insertion in model container [2022-10-15 16:26:57,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:26:57" (3/3) ... [2022-10-15 16:26:57,760 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_4.c [2022-10-15 16:26:57,787 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:26:57,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-10-15 16:26:57,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:26:57,870 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;@7a60899d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:26:57,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-10-15 16:26:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 27 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 16:26:57,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:26:57,888 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:26:57,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:26:57,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-15 16:26:57,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:26:57,899 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-10-15 16:26:57,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:26:57,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166798477] [2022-10-15 16:26:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:26:57,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:26:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:26:58,326 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 16:26:58,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:26:58,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166798477] [2022-10-15 16:26:58,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166798477] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:26:58,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:26:58,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:26:58,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791561751] [2022-10-15 16:26:58,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:26:58,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:26:58,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:26:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:26:58,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:26:58,383 INFO L87 Difference]: Start difference. First operand has 28 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 27 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:26:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:26:58,435 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-10-15 16:26:58,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:26:58,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 16:26:58,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:26:58,450 INFO L225 Difference]: With dead ends: 25 [2022-10-15 16:26:58,451 INFO L226 Difference]: Without dead ends: 23 [2022-10-15 16:26:58,453 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 16:26:58,459 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:26:58,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:26:58,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-15 16:26:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-15 16:26:58,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 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 16:26:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-10-15 16:26:58,504 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 4 [2022-10-15 16:26:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:26:58,505 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-10-15 16:26:58,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:26:58,506 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-10-15 16:26:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:26:58,506 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:26:58,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:26:58,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:26:58,508 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-15 16:26:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:26:58,509 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-10-15 16:26:58,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:26:58,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119944879] [2022-10-15 16:26:58,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:26:58,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:26:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:26:58,754 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 16:26:58,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:26:58,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119944879] [2022-10-15 16:26:58,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119944879] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:26:58,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:26:58,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:26:58,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433533165] [2022-10-15 16:26:58,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:26:58,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:26:58,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:26:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:26:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:26:58,760 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:26:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:26:58,883 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-10-15 16:26:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:26:58,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 16:26:58,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:26:58,886 INFO L225 Difference]: With dead ends: 27 [2022-10-15 16:26:58,887 INFO L226 Difference]: Without dead ends: 27 [2022-10-15 16:26:58,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:26:58,892 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:26:58,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 30 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:26:58,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-10-15 16:26:58,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-10-15 16:26:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 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 16:26:58,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-10-15 16:26:58,911 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 4 [2022-10-15 16:26:58,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:26:58,912 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-10-15 16:26:58,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:26:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-10-15 16:26:58,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 16:26:58,916 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:26:58,916 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-15 16:26:58,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:26:58,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-15 16:26:58,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:26:58,920 INFO L85 PathProgramCache]: Analyzing trace with hash 264651177, now seen corresponding path program 1 times [2022-10-15 16:26:58,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:26:58,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666516659] [2022-10-15 16:26:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:26:58,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:26:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:26:59,184 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 16:26:59,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:26:59,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666516659] [2022-10-15 16:26:59,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666516659] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:26:59,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826800893] [2022-10-15 16:26:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:26:59,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:26:59,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:26:59,192 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 16:26:59,213 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 16:26:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:26:59,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:26:59,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:26:59,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:26:59,553 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 16:26:59,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:26:59,664 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 16:26:59,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826800893] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:26:59,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:26:59,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 9 [2022-10-15 16:26:59,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949548095] [2022-10-15 16:26:59,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:26:59,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 16:26:59,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:26:59,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 16:26:59,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:26:59,669 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:26:59,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:26:59,878 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-10-15 16:26:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 16:26:59,879 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 16:26:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:26:59,882 INFO L225 Difference]: With dead ends: 39 [2022-10-15 16:26:59,882 INFO L226 Difference]: Without dead ends: 39 [2022-10-15 16:26:59,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:26:59,885 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 106 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:26:59,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 21 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:26:59,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-10-15 16:26:59,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2022-10-15 16:26:59,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.303030303030303) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 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 16:26:59,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-10-15 16:26:59,894 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 8 [2022-10-15 16:26:59,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:26:59,895 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-10-15 16:26:59,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:26:59,895 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-10-15 16:26:59,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:26:59,896 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:26:59,896 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 16:26:59,959 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 16:27:00,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:00,113 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-15 16:27:00,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1080027457, now seen corresponding path program 1 times [2022-10-15 16:27:00,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:00,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870868091] [2022-10-15 16:27:00,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:00,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:27:00,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:00,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870868091] [2022-10-15 16:27:00,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870868091] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:27:00,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718063132] [2022-10-15 16:27:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:00,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:00,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:00,403 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 16:27:00,406 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 16:27:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:00,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 16:27:00,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:00,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:00,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718063132] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:00,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:27:00,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2022-10-15 16:27:00,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319745169] [2022-10-15 16:27:00,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:00,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 16:27:00,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:00,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 16:27:00,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:27:00,629 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 16:27:00,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:00,953 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2022-10-15 16:27:00,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 16:27:00,954 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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) Word has length 14 [2022-10-15 16:27:00,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:00,955 INFO L225 Difference]: With dead ends: 96 [2022-10-15 16:27:00,956 INFO L226 Difference]: Without dead ends: 96 [2022-10-15 16:27:00,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2022-10-15 16:27:00,958 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 425 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:00,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 56 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:27:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-10-15 16:27:00,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2022-10-15 16:27:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 80 states have internal predecessors, (101), 0 states have call successors, (0), 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 16:27:00,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2022-10-15 16:27:00,972 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 14 [2022-10-15 16:27:00,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:00,973 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2022-10-15 16:27:00,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 16:27:00,973 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2022-10-15 16:27:00,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 16:27:00,974 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:00,974 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2022-10-15 16:27:01,023 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 16:27:01,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 16:27:01,188 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-15 16:27:01,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:01,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1229902638, now seen corresponding path program 2 times [2022-10-15 16:27:01,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:01,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43585326] [2022-10-15 16:27:01,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:01,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:01,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:01,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43585326] [2022-10-15 16:27:01,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43585326] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:27:01,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637686642] [2022-10-15 16:27:01,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:01,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:01,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:01,579 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 16:27:01,600 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 16:27:01,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:27:01,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:01,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 16:27:01,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:01,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:27:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:01,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:02,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637686642] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:02,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:27:02,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2022-10-15 16:27:02,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080958105] [2022-10-15 16:27:02,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:02,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-15 16:27:02,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:02,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-15 16:27:02,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-10-15 16:27:02,389 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand has 21 states, 20 states have (on average 2.95) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:02,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:02,938 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2022-10-15 16:27:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-15 16:27:02,938 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.95) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-15 16:27:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:02,940 INFO L225 Difference]: With dead ends: 97 [2022-10-15 16:27:02,940 INFO L226 Difference]: Without dead ends: 97 [2022-10-15 16:27:02,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=607, Unknown=0, NotChecked=0, Total=930 [2022-10-15 16:27:02,942 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 164 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:02,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 236 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 16:27:02,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-10-15 16:27:02,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 79. [2022-10-15 16:27:02,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 78 states have internal predecessors, (94), 0 states have call successors, (0), 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 16:27:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2022-10-15 16:27:02,957 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 20 [2022-10-15 16:27:02,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:02,957 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2022-10-15 16:27:02,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.95) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:02,958 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2022-10-15 16:27:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-15 16:27:02,959 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:02,959 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:02,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:03,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:03,161 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-15 16:27:03,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash -593068151, now seen corresponding path program 1 times [2022-10-15 16:27:03,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:03,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562379840] [2022-10-15 16:27:03,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:03,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:03,196 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:03,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916772089] [2022-10-15 16:27:03,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:03,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:03,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:03,198 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 16:27:03,220 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 16:27:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:03,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 16:27:03,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:03,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:03,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:03,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562379840] [2022-10-15 16:27:03,592 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:03,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916772089] [2022-10-15 16:27:03,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916772089] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:03,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:03,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-10-15 16:27:03,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350230548] [2022-10-15 16:27:03,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:03,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-15 16:27:03,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:03,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-15 16:27:03,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2022-10-15 16:27:03,595 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 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 16:27:04,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:04,028 INFO L93 Difference]: Finished difference Result 204 states and 227 transitions. [2022-10-15 16:27:04,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-15 16:27:04,029 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 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) Word has length 36 [2022-10-15 16:27:04,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:04,032 INFO L225 Difference]: With dead ends: 204 [2022-10-15 16:27:04,032 INFO L226 Difference]: Without dead ends: 204 [2022-10-15 16:27:04,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=265, Invalid=335, Unknown=0, NotChecked=0, Total=600 [2022-10-15 16:27:04,034 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 752 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:04,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 92 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 16:27:04,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-10-15 16:27:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 171. [2022-10-15 16:27:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 169 states have (on average 1.2189349112426036) internal successors, (206), 170 states have internal predecessors, (206), 0 states have call successors, (0), 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 16:27:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 206 transitions. [2022-10-15 16:27:04,050 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 206 transitions. Word has length 36 [2022-10-15 16:27:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:04,050 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 206 transitions. [2022-10-15 16:27:04,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 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 16:27:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 206 transitions. [2022-10-15 16:27:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-15 16:27:04,053 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:04,054 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 8, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:04,095 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 16:27:04,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:04,269 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-15 16:27:04,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:04,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1325243691, now seen corresponding path program 2 times [2022-10-15 16:27:04,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:04,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320720323] [2022-10-15 16:27:04,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:04,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:04,321 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:04,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694928136] [2022-10-15 16:27:04,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:04,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:04,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:04,323 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 16:27:04,333 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 16:27:04,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 16:27:04,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:04,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 16:27:04,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2022-10-15 16:27:04,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:27:04,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:04,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320720323] [2022-10-15 16:27:04,685 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:04,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694928136] [2022-10-15 16:27:04,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694928136] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:27:04,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:27:04,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 16:27:04,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442095807] [2022-10-15 16:27:04,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:27:04,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 16:27:04,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 16:27:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:27:04,688 INFO L87 Difference]: Start difference. First operand 171 states and 206 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:04,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:04,748 INFO L93 Difference]: Finished difference Result 374 states and 433 transitions. [2022-10-15 16:27:04,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:27:04,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-10-15 16:27:04,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:04,751 INFO L225 Difference]: With dead ends: 374 [2022-10-15 16:27:04,751 INFO L226 Difference]: Without dead ends: 374 [2022-10-15 16:27:04,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:27:04,753 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 68 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:04,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 54 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:27:04,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-10-15 16:27:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 356. [2022-10-15 16:27:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 354 states have (on average 1.1779661016949152) internal successors, (417), 355 states have internal predecessors, (417), 0 states have call successors, (0), 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 16:27:04,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 417 transitions. [2022-10-15 16:27:04,775 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 417 transitions. Word has length 72 [2022-10-15 16:27:04,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:04,775 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 417 transitions. [2022-10-15 16:27:04,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:04,776 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 417 transitions. [2022-10-15 16:27:04,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-15 16:27:04,778 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:04,779 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 8, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:04,819 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 16:27:04,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:04,994 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-15 16:27:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:04,995 INFO L85 PathProgramCache]: Analyzing trace with hash 470625899, now seen corresponding path program 1 times [2022-10-15 16:27:04,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:04,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055569957] [2022-10-15 16:27:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:04,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:05,025 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:05,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089611402] [2022-10-15 16:27:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:05,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:05,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:05,027 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:05,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 16:27:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:27:05,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 16:27:05,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:05,560 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:27:05,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:27:05,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:05,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055569957] [2022-10-15 16:27:05,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:05,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089611402] [2022-10-15 16:27:05,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089611402] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:05,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:05,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2022-10-15 16:27:05,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067807730] [2022-10-15 16:27:05,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:05,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-15 16:27:05,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:05,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-15 16:27:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 16:27:05,982 INFO L87 Difference]: Start difference. First operand 356 states and 417 transitions. Second operand has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 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 16:27:07,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:07,173 INFO L93 Difference]: Finished difference Result 847 states and 957 transitions. [2022-10-15 16:27:07,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-10-15 16:27:07,174 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 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 79 [2022-10-15 16:27:07,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:07,178 INFO L225 Difference]: With dead ends: 847 [2022-10-15 16:27:07,178 INFO L226 Difference]: Without dead ends: 847 [2022-10-15 16:27:07,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1041, Invalid=1311, Unknown=0, NotChecked=0, Total=2352 [2022-10-15 16:27:07,181 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1140 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:07,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 198 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 16:27:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-10-15 16:27:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 764. [2022-10-15 16:27:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 762 states have (on average 1.1771653543307086) internal successors, (897), 763 states have internal predecessors, (897), 0 states have call successors, (0), 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 16:27:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 897 transitions. [2022-10-15 16:27:07,212 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 897 transitions. Word has length 79 [2022-10-15 16:27:07,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:07,213 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 897 transitions. [2022-10-15 16:27:07,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 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 16:27:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 897 transitions. [2022-10-15 16:27:07,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-10-15 16:27:07,219 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:07,220 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 16, 14, 14, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:07,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:07,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:07,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-15 16:27:07,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1985587411, now seen corresponding path program 2 times [2022-10-15 16:27:07,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:07,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005118467] [2022-10-15 16:27:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:07,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:07,481 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:07,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105619522] [2022-10-15 16:27:07,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:27:07,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:07,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:07,483 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:07,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 16:27:07,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:27:07,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:07,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-15 16:27:07,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1866 backedges. 0 proven. 1861 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:27:08,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1866 backedges. 0 proven. 1861 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:27:10,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:10,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005118467] [2022-10-15 16:27:10,509 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:10,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105619522] [2022-10-15 16:27:10,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105619522] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:10,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:10,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2022-10-15 16:27:10,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055909391] [2022-10-15 16:27:10,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:10,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-10-15 16:27:10,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:10,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-10-15 16:27:10,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2083, Invalid=2207, Unknown=0, NotChecked=0, Total=4290 [2022-10-15 16:27:10,516 INFO L87 Difference]: Start difference. First operand 764 states and 897 transitions. Second operand has 66 states, 66 states have (on average 4.303030303030303) internal successors, (284), 65 states have internal predecessors, (284), 0 states have call successors, (0), 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 16:27:15,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:15,483 INFO L93 Difference]: Finished difference Result 1767 states and 1997 transitions. [2022-10-15 16:27:15,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-10-15 16:27:15,484 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.303030303030303) internal successors, (284), 65 states have internal predecessors, (284), 0 states have call successors, (0), 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 151 [2022-10-15 16:27:15,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:15,495 INFO L225 Difference]: With dead ends: 1767 [2022-10-15 16:27:15,496 INFO L226 Difference]: Without dead ends: 1767 [2022-10-15 16:27:15,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4129, Invalid=5183, Unknown=0, NotChecked=0, Total=9312 [2022-10-15 16:27:15,501 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2922 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2922 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:15,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2922 Valid, 384 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-15 16:27:15,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2022-10-15 16:27:15,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1580. [2022-10-15 16:27:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1578 states have (on average 1.1768060836501901) internal successors, (1857), 1579 states have internal predecessors, (1857), 0 states have call successors, (0), 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 16:27:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 1857 transitions. [2022-10-15 16:27:15,559 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 1857 transitions. Word has length 151 [2022-10-15 16:27:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:15,559 INFO L495 AbstractCegarLoop]: Abstraction has 1580 states and 1857 transitions. [2022-10-15 16:27:15,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.303030303030303) internal successors, (284), 65 states have internal predecessors, (284), 0 states have call successors, (0), 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 16:27:15,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 1857 transitions. [2022-10-15 16:27:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-10-15 16:27:15,566 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:15,566 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 32, 30, 30, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:15,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:15,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:15,782 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-15 16:27:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:15,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1117261219, now seen corresponding path program 3 times [2022-10-15 16:27:15,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:15,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93262943] [2022-10-15 16:27:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:15,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:15,872 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:15,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069386703] [2022-10-15 16:27:15,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 16:27:15,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:15,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:15,874 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:15,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 16:27:16,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 16:27:16,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:16,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:27:16,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8066 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8061 trivial. 0 not checked. [2022-10-15 16:27:16,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8066 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8061 trivial. 0 not checked. [2022-10-15 16:27:20,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:20,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93262943] [2022-10-15 16:27:20,770 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:20,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069386703] [2022-10-15 16:27:20,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069386703] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:20,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:20,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-10-15 16:27:20,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906831267] [2022-10-15 16:27:20,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:20,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 16:27:20,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:20,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 16:27:20,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:27:20,774 INFO L87 Difference]: Start difference. First operand 1580 states and 1857 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:20,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:27:20,975 INFO L93 Difference]: Finished difference Result 3284 states and 3785 transitions. [2022-10-15 16:27:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 16:27:20,976 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2022-10-15 16:27:20,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:27:20,991 INFO L225 Difference]: With dead ends: 3284 [2022-10-15 16:27:20,992 INFO L226 Difference]: Without dead ends: 3284 [2022-10-15 16:27:20,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 578 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2022-10-15 16:27:20,993 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 170 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:27:20,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 98 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:27:20,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2022-10-15 16:27:21,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 3210. [2022-10-15 16:27:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 3208 states have (on average 1.1586658354114714) internal successors, (3717), 3209 states have internal predecessors, (3717), 0 states have call successors, (0), 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 16:27:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 3717 transitions. [2022-10-15 16:27:21,060 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 3717 transitions. Word has length 295 [2022-10-15 16:27:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:27:21,061 INFO L495 AbstractCegarLoop]: Abstraction has 3210 states and 3717 transitions. [2022-10-15 16:27:21,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:27:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 3717 transitions. [2022-10-15 16:27:21,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-10-15 16:27:21,067 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:27:21,067 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 32, 30, 30, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-10-15 16:27:21,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 16:27:21,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-15 16:27:21,283 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-15 16:27:21,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:27:21,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1817056035, now seen corresponding path program 4 times [2022-10-15 16:27:21,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:27:21,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440473463] [2022-10-15 16:27:21,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:27:21,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:27:21,383 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:27:21,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084879983] [2022-10-15 16:27:21,384 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 16:27:21,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:27:21,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:27:21,385 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:27:21,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 16:27:21,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 16:27:21,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:27:21,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 73 conjunts are in the unsatisfiable core [2022-10-15 16:27:21,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:27:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8156 backedges. 7787 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:25,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:27:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8156 backedges. 7787 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:27:34,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:27:34,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440473463] [2022-10-15 16:27:34,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:27:34,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084879983] [2022-10-15 16:27:34,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084879983] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:27:34,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:27:34,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 141 [2022-10-15 16:27:34,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778082506] [2022-10-15 16:27:34,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:27:34,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-10-15 16:27:34,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:27:34,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-10-15 16:27:34,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6435, Invalid=13305, Unknown=0, NotChecked=0, Total=19740 [2022-10-15 16:27:34,537 INFO L87 Difference]: Start difference. First operand 3210 states and 3717 transitions. Second operand has 141 states, 141 states have (on average 4.560283687943262) internal successors, (643), 141 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)