/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-fpi/brs3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:18:16,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:18:16,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:18:16,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:18:16,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:18:16,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:18:16,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:18:16,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:18:16,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:18:16,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:18:16,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:18:16,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:18:16,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:18:16,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:18:16,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:18:16,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:18:16,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:18:16,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:18:16,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:18:16,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:18:16,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:18:16,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:18:16,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:18:16,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:18:16,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 16:18:16,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:18:16,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:18:16,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:18:16,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:18:16,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:18:16,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:18:16,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:18:16,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:18:16,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:18:16,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:18:16,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:18:16,221 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 16:18:16,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:18:16,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:18:16,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:18:16,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:18:16,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:18:16,281 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:18:16,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:18:16,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:18:16,284 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:18:16,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:18:16,286 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:18:16,286 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:18:16,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:18:16,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:18:16,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:18:16,287 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:18:16,287 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:18:16,287 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:18:16,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:18:16,288 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:18:16,288 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:18:16,288 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:18:16,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:18:16,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:18:16,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:18:16,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:18:16,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:18:16,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:18:16,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:18:16,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:18:16,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:18:16,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:18:16,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:18:16,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:18:16,781 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:18:16,782 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:18:16,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs3.c [2022-10-15 16:18:16,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6b073ec/2c48f7ded82841499234a85dbde549c7/FLAGc3f24ea71 [2022-10-15 16:18:17,452 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:18:17,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs3.c [2022-10-15 16:18:17,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6b073ec/2c48f7ded82841499234a85dbde549c7/FLAGc3f24ea71 [2022-10-15 16:18:17,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6b073ec/2c48f7ded82841499234a85dbde549c7 [2022-10-15 16:18:17,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:18:17,837 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:18:17,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:18:17,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:18:17,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:18:17,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:18:17" (1/1) ... [2022-10-15 16:18:17,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7be64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:17, skipping insertion in model container [2022-10-15 16:18:17,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:18:17" (1/1) ... [2022-10-15 16:18:17,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:18:17,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:18:18,115 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-fpi/brs3.c[587,600] [2022-10-15 16:18:18,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:18:18,164 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:18:18,183 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-fpi/brs3.c[587,600] [2022-10-15 16:18:18,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:18:18,211 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:18:18,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18 WrapperNode [2022-10-15 16:18:18,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:18:18,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:18:18,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:18:18,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:18:18,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18" (1/1) ... [2022-10-15 16:18:18,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18" (1/1) ... [2022-10-15 16:18:18,292 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2022-10-15 16:18:18,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:18:18,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:18:18,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:18:18,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:18:18,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18" (1/1) ... [2022-10-15 16:18:18,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18" (1/1) ... [2022-10-15 16:18:18,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18" (1/1) ... [2022-10-15 16:18:18,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18" (1/1) ... [2022-10-15 16:18:18,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18" (1/1) ... [2022-10-15 16:18:18,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18" (1/1) ... [2022-10-15 16:18:18,349 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18" (1/1) ... [2022-10-15 16:18:18,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18" (1/1) ... [2022-10-15 16:18:18,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:18:18,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:18:18,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:18:18,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:18:18,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18" (1/1) ... [2022-10-15 16:18:18,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:18:18,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:18,405 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 16:18:18,429 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 16:18:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:18:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:18:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 16:18:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:18:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 16:18:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:18:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:18:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:18:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 16:18:18,590 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:18:18,593 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:18:18,932 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:18:18,940 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:18:18,940 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 16:18:18,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:18:18 BoogieIcfgContainer [2022-10-15 16:18:18,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:18:18,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:18:18,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:18:18,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:18:18,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:18:17" (1/3) ... [2022-10-15 16:18:18,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e41cdd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:18:18, skipping insertion in model container [2022-10-15 16:18:18,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:18:18" (2/3) ... [2022-10-15 16:18:18,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e41cdd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:18:18, skipping insertion in model container [2022-10-15 16:18:18,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:18:18" (3/3) ... [2022-10-15 16:18:18,953 INFO L112 eAbstractionObserver]: Analyzing ICFG brs3.c [2022-10-15 16:18:18,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:18:18,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-10-15 16:18:19,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:18:19,076 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;@25364971, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:18:19,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-10-15 16:18:19,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 42 states have internal predecessors, (51), 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 16:18:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:18:19,089 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:19,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:18:19,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:19,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash 925684, now seen corresponding path program 1 times [2022-10-15 16:18:19,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:19,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697006958] [2022-10-15 16:18:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:19,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:19,378 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 16:18:19,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:19,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697006958] [2022-10-15 16:18:19,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697006958] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:19,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:19,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:18:19,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512337578] [2022-10-15 16:18:19,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:19,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:18:19,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:19,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:18:19,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:18:19,424 INFO L87 Difference]: Start difference. First operand has 43 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 42 states have internal predecessors, (51), 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 16:18:19,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:19,495 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-10-15 16:18:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:18:19,501 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 16:18:19,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:19,510 INFO L225 Difference]: With dead ends: 44 [2022-10-15 16:18:19,510 INFO L226 Difference]: Without dead ends: 41 [2022-10-15 16:18:19,513 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 16:18:19,517 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:19,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 68 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-15 16:18:19,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-10-15 16:18:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.76) internal successors, (44), 40 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 16:18:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-10-15 16:18:19,558 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 4 [2022-10-15 16:18:19,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:19,559 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-10-15 16:18:19,559 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 16:18:19,559 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-10-15 16:18:19,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 16:18:19,560 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:19,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:19,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:18:19,561 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash 179478226, now seen corresponding path program 1 times [2022-10-15 16:18:19,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:19,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002037895] [2022-10-15 16:18:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:19,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:19,801 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 16:18:19,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:19,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002037895] [2022-10-15 16:18:19,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002037895] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:19,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:19,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:18:19,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328174579] [2022-10-15 16:18:19,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:19,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:18:19,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:19,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:18:19,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:18:19,807 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:18:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:19,872 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-10-15 16:18:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:18:19,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:18:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:19,875 INFO L225 Difference]: With dead ends: 38 [2022-10-15 16:18:19,876 INFO L226 Difference]: Without dead ends: 38 [2022-10-15 16:18:19,880 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 16:18:19,882 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 32 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:19,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:18:19,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-15 16:18:19,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-10-15 16:18:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.64) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-10-15 16:18:19,901 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 8 [2022-10-15 16:18:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:19,904 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-10-15 16:18:19,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:18:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-10-15 16:18:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 16:18:19,905 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:19,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:19,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:18:19,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:19,909 INFO L85 PathProgramCache]: Analyzing trace with hash 179478227, now seen corresponding path program 1 times [2022-10-15 16:18:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:19,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182575882] [2022-10-15 16:18:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:20,166 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 16:18:20,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:20,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182575882] [2022-10-15 16:18:20,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182575882] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:20,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:20,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:18:20,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176803794] [2022-10-15 16:18:20,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:20,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:18:20,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:20,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:18:20,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:18:20,170 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 16:18:20,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:20,264 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-10-15 16:18:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:18:20,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 16:18:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:20,265 INFO L225 Difference]: With dead ends: 42 [2022-10-15 16:18:20,266 INFO L226 Difference]: Without dead ends: 42 [2022-10-15 16:18:20,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 16:18:20,268 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 43 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:20,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 55 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:18:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-15 16:18:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-10-15 16:18:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 40 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 16:18:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-10-15 16:18:20,276 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 8 [2022-10-15 16:18:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:20,277 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-10-15 16:18:20,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 16:18:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-10-15 16:18:20,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 16:18:20,278 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:20,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:20,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:18:20,279 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:20,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:20,280 INFO L85 PathProgramCache]: Analyzing trace with hash 533007623, now seen corresponding path program 1 times [2022-10-15 16:18:20,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:20,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912415181] [2022-10-15 16:18:20,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:20,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:20,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:20,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912415181] [2022-10-15 16:18:20,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912415181] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:18:20,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466558166] [2022-10-15 16:18:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:20,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:20,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:20,527 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 16:18:20,547 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 16:18:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:20,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:18:20,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:18:20,700 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-15 16:18:20,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-10-15 16:18:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:20,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:18:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:20,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466558166] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:18:20,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:18:20,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-10-15 16:18:20,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646413993] [2022-10-15 16:18:20,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:18:20,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 16:18:20,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:20,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 16:18:20,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:18:20,997 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:21,159 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2022-10-15 16:18:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:18:21,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 16:18:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:21,160 INFO L225 Difference]: With dead ends: 52 [2022-10-15 16:18:21,161 INFO L226 Difference]: Without dead ends: 52 [2022-10-15 16:18:21,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:18:21,163 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 114 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:21,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 53 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:18:21,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-15 16:18:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2022-10-15 16:18:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-10-15 16:18:21,170 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 12 [2022-10-15 16:18:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:21,171 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-10-15 16:18:21,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-10-15 16:18:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 16:18:21,172 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:21,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:21,211 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 16:18:21,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:21,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:21,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:21,389 INFO L85 PathProgramCache]: Analyzing trace with hash -656678400, now seen corresponding path program 1 times [2022-10-15 16:18:21,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:21,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791367214] [2022-10-15 16:18:21,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:21,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:18:21,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:21,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791367214] [2022-10-15 16:18:21,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791367214] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:21,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:21,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:18:21,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136731485] [2022-10-15 16:18:21,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:21,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:18:21,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:21,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:18:21,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:18:21,492 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:21,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:21,537 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2022-10-15 16:18:21,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:18:21,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-15 16:18:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:21,540 INFO L225 Difference]: With dead ends: 42 [2022-10-15 16:18:21,540 INFO L226 Difference]: Without dead ends: 42 [2022-10-15 16:18:21,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:18:21,550 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:21,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 43 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-15 16:18:21,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2022-10-15 16:18:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:21,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2022-10-15 16:18:21,570 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 13 [2022-10-15 16:18:21,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:21,570 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2022-10-15 16:18:21,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:21,571 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2022-10-15 16:18:21,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:18:21,571 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:21,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:21,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 16:18:21,572 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:21,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:21,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1117807372, now seen corresponding path program 1 times [2022-10-15 16:18:21,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:21,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561887356] [2022-10-15 16:18:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:21,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:21,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:21,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561887356] [2022-10-15 16:18:21,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561887356] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:21,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:21,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:18:21,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835712973] [2022-10-15 16:18:21,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:21,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:18:21,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:21,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:18:21,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:18:21,718 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:21,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:21,762 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-10-15 16:18:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:18:21,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 16:18:21,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:21,768 INFO L225 Difference]: With dead ends: 35 [2022-10-15 16:18:21,768 INFO L226 Difference]: Without dead ends: 35 [2022-10-15 16:18:21,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:18:21,773 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:21,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 24 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:21,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-10-15 16:18:21,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-10-15 16:18:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-10-15 16:18:21,784 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 14 [2022-10-15 16:18:21,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:21,785 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-10-15 16:18:21,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:21,785 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-10-15 16:18:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:18:21,786 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:21,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:21,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 16:18:21,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:21,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:21,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1117807373, now seen corresponding path program 1 times [2022-10-15 16:18:21,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:21,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603564501] [2022-10-15 16:18:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:21,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:21,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:21,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603564501] [2022-10-15 16:18:21,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603564501] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:18:21,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717103603] [2022-10-15 16:18:21,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:21,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:21,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:21,954 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 16:18:21,974 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 16:18:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:22,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 16:18:22,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:18:22,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:18:22,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-10-15 16:18:22,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-15 16:18:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:18:22,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:18:22,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717103603] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:22,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:18:22,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-10-15 16:18:22,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421415585] [2022-10-15 16:18:22,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:22,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:18:22,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:22,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:18:22,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:18:22,124 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:22,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:22,151 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-10-15 16:18:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:18:22,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 16:18:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:22,153 INFO L225 Difference]: With dead ends: 31 [2022-10-15 16:18:22,153 INFO L226 Difference]: Without dead ends: 31 [2022-10-15 16:18:22,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:18:22,156 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:22,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:22,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-10-15 16:18:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-10-15 16:18:22,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 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 16:18:22,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-10-15 16:18:22,174 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 14 [2022-10-15 16:18:22,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:22,176 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-10-15 16:18:22,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-10-15 16:18:22,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 16:18:22,178 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:22,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:22,219 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 16:18:22,392 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,SelfDestructingSolverStorable6 [2022-10-15 16:18:22,392 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:22,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:22,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1906382886, now seen corresponding path program 1 times [2022-10-15 16:18:22,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:22,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134214495] [2022-10-15 16:18:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:22,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:18:22,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:22,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134214495] [2022-10-15 16:18:22,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134214495] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:22,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:22,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 16:18:22,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451247324] [2022-10-15 16:18:22,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:22,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 16:18:22,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:22,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 16:18:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:18:22,609 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 16:18:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:22,681 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-10-15 16:18:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 16:18:22,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 16:18:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:22,683 INFO L225 Difference]: With dead ends: 41 [2022-10-15 16:18:22,683 INFO L226 Difference]: Without dead ends: 41 [2022-10-15 16:18:22,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:18:22,684 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:22,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 63 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:22,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-15 16:18:22,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2022-10-15 16:18:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 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 16:18:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-10-15 16:18:22,691 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 20 [2022-10-15 16:18:22,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:22,691 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-10-15 16:18:22,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 16:18:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-10-15 16:18:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 16:18:22,693 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:22,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:22,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 16:18:22,693 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 16:18:22,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1031677724, now seen corresponding path program 1 times [2022-10-15 16:18:22,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:22,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213565340] [2022-10-15 16:18:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:18:22,741 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-15 16:18:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:18:22,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-15 16:18:22,790 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-15 16:18:22,792 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (15 of 16 remaining) [2022-10-15 16:18:22,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 16 remaining) [2022-10-15 16:18:22,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2022-10-15 16:18:22,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2022-10-15 16:18:22,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2022-10-15 16:18:22,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2022-10-15 16:18:22,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2022-10-15 16:18:22,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2022-10-15 16:18:22,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2022-10-15 16:18:22,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2022-10-15 16:18:22,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2022-10-15 16:18:22,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2022-10-15 16:18:22,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 16 remaining) [2022-10-15 16:18:22,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 16 remaining) [2022-10-15 16:18:22,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 16 remaining) [2022-10-15 16:18:22,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2022-10-15 16:18:22,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 16:18:22,801 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:22,805 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 16:18:22,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 04:18:22 BoogieIcfgContainer [2022-10-15 16:18:22,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 16:18:22,867 INFO L158 Benchmark]: Toolchain (without parser) took 5033.77ms. Allocated memory was 151.0MB in the beginning and 181.4MB in the end (delta: 30.4MB). Free memory was 125.0MB in the beginning and 127.6MB in the end (delta: -2.5MB). Peak memory consumption was 29.3MB. Max. memory is 8.0GB. [2022-10-15 16:18:22,867 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 151.0MB. Free memory was 121.7MB in the beginning and 121.6MB in the end (delta: 71.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 16:18:22,867 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.14ms. Allocated memory is still 151.0MB. Free memory was 124.8MB in the beginning and 114.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-15 16:18:22,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.71ms. Allocated memory is still 151.0MB. Free memory was 114.5MB in the beginning and 112.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 16:18:22,869 INFO L158 Benchmark]: Boogie Preprocessor took 64.35ms. Allocated memory is still 151.0MB. Free memory was 112.9MB in the beginning and 111.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 16:18:22,869 INFO L158 Benchmark]: RCFGBuilder took 584.48ms. Allocated memory is still 151.0MB. Free memory was 111.6MB in the beginning and 98.0MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-10-15 16:18:22,870 INFO L158 Benchmark]: TraceAbstraction took 3920.56ms. Allocated memory was 151.0MB in the beginning and 181.4MB in the end (delta: 30.4MB). Free memory was 97.2MB in the beginning and 127.6MB in the end (delta: -30.4MB). Peak memory consumption was 949.4kB. Max. memory is 8.0GB. [2022-10-15 16:18:22,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 151.0MB. Free memory was 121.7MB in the beginning and 121.6MB in the end (delta: 71.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 370.14ms. Allocated memory is still 151.0MB. Free memory was 124.8MB in the beginning and 114.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 74.71ms. Allocated memory is still 151.0MB. Free memory was 114.5MB in the beginning and 112.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.35ms. Allocated memory is still 151.0MB. Free memory was 112.9MB in the beginning and 111.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 584.48ms. Allocated memory is still 151.0MB. Free memory was 111.6MB in the beginning and 98.0MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3920.56ms. Allocated memory was 151.0MB in the beginning and 181.4MB in the end (delta: 30.4MB). Free memory was 97.2MB in the beginning and 127.6MB in the end (delta: -30.4MB). Peak memory consumption was 949.4kB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 21. Possible FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [a={-1:0}, i=0, N=1, sum={9:0}] [L31] COND TRUE i