/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-crafted/zero_sum_m2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:17:51,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:17:51,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:17:51,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:17:51,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:17:51,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:17:51,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:17:51,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:17:51,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:17:51,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:17:51,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:17:51,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:17:51,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:17:51,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:17:51,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:17:51,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:17:51,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:17:51,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:17:51,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:17:51,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:17:51,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:17:51,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:17:51,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:17:51,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:17:51,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 16:17:51,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:17:51,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:17:51,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:17:51,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:17:51,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:17:51,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:17:51,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:17:51,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:17:51,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:17:51,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:17:51,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:17:51,221 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 16:17:51,251 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:17:51,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:17:51,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:17:51,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:17:51,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:17:51,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:17:51,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:17:51,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:17:51,256 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:17:51,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:17:51,256 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:17:51,257 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:17:51,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:17:51,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:17:51,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:17:51,258 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:17:51,258 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:17:51,259 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:17:51,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:17:51,259 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:17:51,260 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:17:51,260 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:17:51,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:17:51,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:17:51,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:17:51,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:17:51,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:17:51,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:17:51,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:17:51,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:17:51,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:17:51,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:17:51,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:17:51,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:17:51,719 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:17:51,720 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:17:51,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum_m2.c [2022-10-15 16:17:51,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff73ff675/d2a77949ffd94f2b90c03051bc7d0c73/FLAG88dea0f24 [2022-10-15 16:17:52,481 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:17:52,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_m2.c [2022-10-15 16:17:52,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff73ff675/d2a77949ffd94f2b90c03051bc7d0c73/FLAG88dea0f24 [2022-10-15 16:17:52,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff73ff675/d2a77949ffd94f2b90c03051bc7d0c73 [2022-10-15 16:17:52,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:17:52,847 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:17:52,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:17:52,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:17:52,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:17:52,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:17:52" (1/1) ... [2022-10-15 16:17:52,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70fd8518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:52, skipping insertion in model container [2022-10-15 16:17:52,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:17:52" (1/1) ... [2022-10-15 16:17:52,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:17:52,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:17:53,158 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-crafted/zero_sum_m2.c[402,415] [2022-10-15 16:17:53,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:17:53,196 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:17:53,216 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-crafted/zero_sum_m2.c[402,415] [2022-10-15 16:17:53,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:17:53,248 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:17:53,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53 WrapperNode [2022-10-15 16:17:53,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:17:53,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:17:53,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:17:53,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:17:53,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53" (1/1) ... [2022-10-15 16:17:53,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53" (1/1) ... [2022-10-15 16:17:53,299 INFO L138 Inliner]: procedures = 15, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-10-15 16:17:53,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:17:53,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:17:53,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:17:53,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:17:53,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53" (1/1) ... [2022-10-15 16:17:53,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53" (1/1) ... [2022-10-15 16:17:53,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53" (1/1) ... [2022-10-15 16:17:53,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53" (1/1) ... [2022-10-15 16:17:53,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53" (1/1) ... [2022-10-15 16:17:53,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53" (1/1) ... [2022-10-15 16:17:53,337 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53" (1/1) ... [2022-10-15 16:17:53,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53" (1/1) ... [2022-10-15 16:17:53,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:17:53,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:17:53,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:17:53,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:17:53,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53" (1/1) ... [2022-10-15 16:17:53,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:17:53,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:17:53,383 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 16:17:53,392 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 16:17:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:17:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:17:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 16:17:53,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:17:53,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:17:53,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:17:53,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:17:53,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 16:17:53,621 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:17:53,624 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:17:54,040 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:17:54,055 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:17:54,056 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-15 16:17:54,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:17:54 BoogieIcfgContainer [2022-10-15 16:17:54,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:17:54,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:17:54,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:17:54,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:17:54,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:17:52" (1/3) ... [2022-10-15 16:17:54,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d52b1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:17:54, skipping insertion in model container [2022-10-15 16:17:54,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:53" (2/3) ... [2022-10-15 16:17:54,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d52b1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:17:54, skipping insertion in model container [2022-10-15 16:17:54,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:17:54" (3/3) ... [2022-10-15 16:17:54,075 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_m2.c [2022-10-15 16:17:54,098 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:17:54,098 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-15 16:17:54,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:17:54,189 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;@7523514d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:17:54,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-15 16:17:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 46 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:54,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:17:54,204 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:54,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:17:54,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:17:54,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:54,212 INFO L85 PathProgramCache]: Analyzing trace with hash 28693957, now seen corresponding path program 1 times [2022-10-15 16:17:54,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:54,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596445556] [2022-10-15 16:17:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:54,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:54,623 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 16:17:54,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:54,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596445556] [2022-10-15 16:17:54,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596445556] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:17:54,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:17:54,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:17:54,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902823717] [2022-10-15 16:17:54,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:17:54,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:17:54,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:54,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:17:54,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:17:54,687 INFO L87 Difference]: Start difference. First operand has 47 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 46 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:17:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:54,797 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2022-10-15 16:17:54,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:17:54,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-15 16:17:54,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:54,812 INFO L225 Difference]: With dead ends: 85 [2022-10-15 16:17:54,812 INFO L226 Difference]: Without dead ends: 83 [2022-10-15 16:17:54,814 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 16:17:54,819 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 40 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:54,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 64 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:17:54,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-10-15 16:17:54,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2022-10-15 16:17:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.542857142857143) internal successors, (54), 46 states have internal predecessors, (54), 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 16:17:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2022-10-15 16:17:54,872 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 5 [2022-10-15 16:17:54,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:54,873 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2022-10-15 16:17:54,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:17:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2022-10-15 16:17:54,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:17:54,876 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:54,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:17:54,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:17:54,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:17:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:54,879 INFO L85 PathProgramCache]: Analyzing trace with hash 28693956, now seen corresponding path program 1 times [2022-10-15 16:17:54,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:54,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904193643] [2022-10-15 16:17:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:54,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:55,028 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 16:17:55,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:55,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904193643] [2022-10-15 16:17:55,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904193643] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:17:55,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:17:55,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:17:55,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942499530] [2022-10-15 16:17:55,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:17:55,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:17:55,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:17:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:17:55,033 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:17:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:55,098 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2022-10-15 16:17:55,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:17:55,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-15 16:17:55,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:55,102 INFO L225 Difference]: With dead ends: 42 [2022-10-15 16:17:55,102 INFO L226 Difference]: Without dead ends: 42 [2022-10-15 16:17:55,103 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 16:17:55,108 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 37 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:55,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 36 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:17:55,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-15 16:17:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-10-15 16:17:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-10-15 16:17:55,127 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 5 [2022-10-15 16:17:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:55,128 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-10-15 16:17:55,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:17:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-10-15 16:17:55,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:17:55,131 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:55,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:17:55,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:17:55,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:17:55,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:55,132 INFO L85 PathProgramCache]: Analyzing trace with hash 28795050, now seen corresponding path program 1 times [2022-10-15 16:17:55,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:55,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753273814] [2022-10-15 16:17:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:55,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:55,167 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 16:17:55,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:55,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753273814] [2022-10-15 16:17:55,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753273814] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:17:55,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:17:55,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:17:55,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803924586] [2022-10-15 16:17:55,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:17:55,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:17:55,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:55,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:17:55,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:17:55,172 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:17:55,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:55,197 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2022-10-15 16:17:55,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:17:55,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-15 16:17:55,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:55,199 INFO L225 Difference]: With dead ends: 44 [2022-10-15 16:17:55,199 INFO L226 Difference]: Without dead ends: 42 [2022-10-15 16:17:55,199 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 16:17:55,201 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:55,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:17:55,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-15 16:17:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-10-15 16:17:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 41 states have internal predecessors, (47), 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 16:17:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-10-15 16:17:55,210 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 5 [2022-10-15 16:17:55,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:55,211 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-10-15 16:17:55,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:17:55,212 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-10-15 16:17:55,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 16:17:55,213 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:55,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:17:55,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:17:55,214 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:17:55,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:55,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1805037041, now seen corresponding path program 1 times [2022-10-15 16:17:55,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:55,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016275067] [2022-10-15 16:17:55,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:55,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:55,351 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 16:17:55,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:55,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016275067] [2022-10-15 16:17:55,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016275067] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:17:55,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:17:55,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:17:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29804371] [2022-10-15 16:17:55,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:17:55,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:17:55,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:55,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:17:55,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:17:55,360 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 16:17:55,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:55,414 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-10-15 16:17:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:17:55,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-10-15 16:17:55,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:55,417 INFO L225 Difference]: With dead ends: 44 [2022-10-15 16:17:55,417 INFO L226 Difference]: Without dead ends: 44 [2022-10-15 16:17:55,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:17:55,429 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:55,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 69 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:17:55,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-15 16:17:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2022-10-15 16:17:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-10-15 16:17:55,451 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 7 [2022-10-15 16:17:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:55,451 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-10-15 16:17:55,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 16:17:55,452 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-10-15 16:17:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 16:17:55,455 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:55,455 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:17:55,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 16:17:55,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:17:55,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:55,457 INFO L85 PathProgramCache]: Analyzing trace with hash -477675640, now seen corresponding path program 1 times [2022-10-15 16:17:55,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:55,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613227477] [2022-10-15 16:17:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:55,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:55,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:55,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613227477] [2022-10-15 16:17:55,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613227477] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:17:55,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524591096] [2022-10-15 16:17:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:55,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:55,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:17:55,772 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 16:17:55,792 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 16:17:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:55,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:17:55,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:17:55,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:17:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:56,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:17:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:56,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524591096] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:17:56,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:17:56,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-10-15 16:17:56,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473594675] [2022-10-15 16:17:56,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:17:56,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 16:17:56,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:56,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 16:17:56,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:17:56,138 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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 16:17:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:56,257 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2022-10-15 16:17:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:17:56,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 16:17:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:56,263 INFO L225 Difference]: With dead ends: 77 [2022-10-15 16:17:56,263 INFO L226 Difference]: Without dead ends: 77 [2022-10-15 16:17:56,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:17:56,270 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:56,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 140 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:17:56,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-10-15 16:17:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 46. [2022-10-15 16:17:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 45 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 16:17:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-10-15 16:17:56,291 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 9 [2022-10-15 16:17:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:56,292 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-10-15 16:17:56,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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 16:17:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-10-15 16:17:56,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-15 16:17:56,293 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:56,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:17:56,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 16:17:56,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:56,509 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:17:56,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:56,511 INFO L85 PathProgramCache]: Analyzing trace with hash 515158772, now seen corresponding path program 1 times [2022-10-15 16:17:56,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:56,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685963394] [2022-10-15 16:17:56,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:56,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:56,642 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 16:17:56,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:56,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685963394] [2022-10-15 16:17:56,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685963394] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:17:56,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255592669] [2022-10-15 16:17:56,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:56,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:56,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:17:56,645 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 16:17:56,654 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 16:17:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:56,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 16:17:56,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:17:56,768 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 16:17:56,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:17:56,807 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 16:17:56,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255592669] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:17:56,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:17:56,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-10-15 16:17:56,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380024675] [2022-10-15 16:17:56,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:17:56,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 16:17:56,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:56,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 16:17:56,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:17:56,810 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:57,015 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2022-10-15 16:17:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 16:17:57,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-15 16:17:57,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:57,016 INFO L225 Difference]: With dead ends: 72 [2022-10-15 16:17:57,017 INFO L226 Difference]: Without dead ends: 72 [2022-10-15 16:17:57,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:17:57,018 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 102 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:57,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 77 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:17:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-10-15 16:17:57,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2022-10-15 16:17:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 53 states have internal predecessors, (62), 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 16:17:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2022-10-15 16:17:57,026 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 11 [2022-10-15 16:17:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:57,026 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2022-10-15 16:17:57,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:57,027 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2022-10-15 16:17:57,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 16:17:57,028 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:57,028 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2022-10-15 16:17:57,068 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 16:17:57,241 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,SelfDestructingSolverStorable5 [2022-10-15 16:17:57,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:17:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1194856395, now seen corresponding path program 2 times [2022-10-15 16:17:57,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:57,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027364719] [2022-10-15 16:17:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:57,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:57,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027364719] [2022-10-15 16:17:57,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027364719] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:17:57,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014641326] [2022-10-15 16:17:57,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:17:57,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:57,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:17:57,408 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:17:57,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 16:17:57,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:17:57,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:17:57,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 16:17:57,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:17:57,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:17:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:57,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:17:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:57,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014641326] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:17:57,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:17:57,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-15 16:17:57,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061856953] [2022-10-15 16:17:57,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:17:57,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 16:17:57,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:57,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 16:17:57,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:17:57,898 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:58,052 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2022-10-15 16:17:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 16:17:58,054 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-15 16:17:58,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:58,055 INFO L225 Difference]: With dead ends: 55 [2022-10-15 16:17:58,055 INFO L226 Difference]: Without dead ends: 55 [2022-10-15 16:17:58,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:17:58,060 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 114 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:58,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 87 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:17:58,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-15 16:17:58,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2022-10-15 16:17:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 51 states have internal predecessors, (60), 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 16:17:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2022-10-15 16:17:58,071 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 13 [2022-10-15 16:17:58,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:58,072 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2022-10-15 16:17:58,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:17:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2022-10-15 16:17:58,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-15 16:17:58,078 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:58,078 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:17:58,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:17:58,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:58,299 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:17:58,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:58,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1183101882, now seen corresponding path program 1 times [2022-10-15 16:17:58,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:58,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781284925] [2022-10-15 16:17:58,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:58,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 16:17:58,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:58,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781284925] [2022-10-15 16:17:58,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781284925] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:17:58,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830484706] [2022-10-15 16:17:58,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:58,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:58,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:17:58,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:17:58,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 16:17:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:58,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 16:17:58,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:17:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:58,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:17:58,725 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 25 treesize of output 21 [2022-10-15 16:17:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:58,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830484706] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:17:58,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:17:58,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2022-10-15 16:17:58,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206248293] [2022-10-15 16:17:58,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:17:58,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-15 16:17:58,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:58,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-15 16:17:58,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-10-15 16:17:58,787 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 15 states, 14 states have (on average 3.5) internal successors, (49), 15 states have internal predecessors, (49), 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 16:17:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:59,101 INFO L93 Difference]: Finished difference Result 92 states and 104 transitions. [2022-10-15 16:17:59,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 16:17:59,102 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 15 states have internal predecessors, (49), 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 19 [2022-10-15 16:17:59,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:59,103 INFO L225 Difference]: With dead ends: 92 [2022-10-15 16:17:59,103 INFO L226 Difference]: Without dead ends: 92 [2022-10-15 16:17:59,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2022-10-15 16:17:59,104 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 294 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:59,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 97 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:17:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-10-15 16:17:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 68. [2022-10-15 16:17:59,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 67 states have internal predecessors, (80), 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 16:17:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2022-10-15 16:17:59,111 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 19 [2022-10-15 16:17:59,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:59,111 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2022-10-15 16:17:59,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 15 states have internal predecessors, (49), 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 16:17:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2022-10-15 16:17:59,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-15 16:17:59,113 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:59,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:17:59,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 16:17:59,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:59,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:17:59,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:59,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1038508294, now seen corresponding path program 1 times [2022-10-15 16:17:59,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:59,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610639865] [2022-10-15 16:17:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:59,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 16:17:59,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:59,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610639865] [2022-10-15 16:17:59,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610639865] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:17:59,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:17:59,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:17:59,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038256715] [2022-10-15 16:17:59,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:17:59,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:17:59,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:59,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:17:59,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:17:59,385 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 16:17:59,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:17:59,439 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2022-10-15 16:17:59,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:17:59,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 23 [2022-10-15 16:17:59,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:17:59,441 INFO L225 Difference]: With dead ends: 68 [2022-10-15 16:17:59,441 INFO L226 Difference]: Without dead ends: 68 [2022-10-15 16:17:59,441 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 16:17:59,442 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 44 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:17:59,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 39 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:17:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-10-15 16:17:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-10-15 16:17:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 67 states have internal predecessors, (76), 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 16:17:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2022-10-15 16:17:59,448 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 23 [2022-10-15 16:17:59,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:17:59,448 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2022-10-15 16:17:59,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 16:17:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2022-10-15 16:17:59,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-15 16:17:59,450 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:17:59,450 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 16:17:59,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 16:17:59,450 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:17:59,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:17:59,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1227132797, now seen corresponding path program 2 times [2022-10-15 16:17:59,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:17:59,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662885702] [2022-10-15 16:17:59,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:17:59,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:17:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:17:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:59,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:17:59,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662885702] [2022-10-15 16:17:59,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662885702] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:17:59,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553342682] [2022-10-15 16:17:59,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:17:59,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:17:59,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:17:59,563 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:17:59,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 16:17:59,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:17:59,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:17:59,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:17:59,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:17:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:59,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:17:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:17:59,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553342682] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:17:59,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:17:59,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-10-15 16:17:59,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203938667] [2022-10-15 16:17:59,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:17:59,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 16:17:59,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:17:59,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 16:17:59,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:17:59,788 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:00,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:00,060 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2022-10-15 16:18:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 16:18:00,061 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-15 16:18:00,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:00,062 INFO L225 Difference]: With dead ends: 134 [2022-10-15 16:18:00,062 INFO L226 Difference]: Without dead ends: 134 [2022-10-15 16:18:00,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-10-15 16:18:00,063 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 110 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:00,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 240 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:18:00,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-10-15 16:18:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 112. [2022-10-15 16:18:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.179245283018868) internal successors, (125), 111 states have internal predecessors, (125), 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 16:18:00,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2022-10-15 16:18:00,071 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 23 [2022-10-15 16:18:00,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:00,071 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2022-10-15 16:18:00,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:00,072 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2022-10-15 16:18:00,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-15 16:18:00,073 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:00,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:00,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 16:18:00,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-15 16:18:00,287 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:18:00,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:00,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1133915776, now seen corresponding path program 3 times [2022-10-15 16:18:00,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:00,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864120215] [2022-10-15 16:18:00,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:00,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:00,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:00,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864120215] [2022-10-15 16:18:00,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864120215] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:18:00,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967641597] [2022-10-15 16:18:00,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 16:18:00,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:00,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:00,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:18:00,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 16:18:00,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 16:18:00,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:18:00,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 16:18:00,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:18:00,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:18:00,782 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-15 16:18:00,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:18:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-15 16:18:01,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967641597] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:18:01,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:18:01,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 17 [2022-10-15 16:18:01,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111489046] [2022-10-15 16:18:01,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:18:01,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-15 16:18:01,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:01,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-15 16:18:01,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-10-15 16:18:01,007 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:01,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:01,651 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2022-10-15 16:18:01,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-15 16:18:01,652 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-10-15 16:18:01,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:01,653 INFO L225 Difference]: With dead ends: 137 [2022-10-15 16:18:01,653 INFO L226 Difference]: Without dead ends: 137 [2022-10-15 16:18:01,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2022-10-15 16:18:01,654 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 184 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:01,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 206 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 16:18:01,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-10-15 16:18:01,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 120. [2022-10-15 16:18:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.0932203389830508) internal successors, (129), 119 states have internal predecessors, (129), 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 16:18:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2022-10-15 16:18:01,662 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 27 [2022-10-15 16:18:01,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:01,662 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2022-10-15 16:18:01,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2022-10-15 16:18:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-15 16:18:01,664 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:01,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:01,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 16:18:01,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:01,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:18:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2020918418, now seen corresponding path program 1 times [2022-10-15 16:18:01,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:01,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810628749] [2022-10-15 16:18:01,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:01,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 16:18:01,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:01,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810628749] [2022-10-15 16:18:01,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810628749] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:18:01,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168460179] [2022-10-15 16:18:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:01,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:01,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:01,954 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:18:01,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 16:18:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:02,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 16:18:02,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:18:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 16:18:02,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:18:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 16:18:02,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168460179] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:18:02,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:18:02,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-10-15 16:18:02,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410937065] [2022-10-15 16:18:02,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:18:02,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 16:18:02,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:02,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 16:18:02,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:18:02,097 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:02,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:02,184 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2022-10-15 16:18:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:18:02,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-10-15 16:18:02,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:02,186 INFO L225 Difference]: With dead ends: 120 [2022-10-15 16:18:02,186 INFO L226 Difference]: Without dead ends: 120 [2022-10-15 16:18:02,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:18:02,187 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 80 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:02,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 63 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:18:02,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-15 16:18:02,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-10-15 16:18:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.0593220338983051) internal successors, (125), 119 states have internal predecessors, (125), 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 16:18:02,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2022-10-15 16:18:02,193 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 39 [2022-10-15 16:18:02,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:02,193 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2022-10-15 16:18:02,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:18:02,193 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2022-10-15 16:18:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-15 16:18:02,195 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:02,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:02,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-10-15 16:18:02,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:02,411 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:18:02,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:02,412 INFO L85 PathProgramCache]: Analyzing trace with hash -374943714, now seen corresponding path program 2 times [2022-10-15 16:18:02,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:02,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643467166] [2022-10-15 16:18:02,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:02,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 16:18:04,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:04,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643467166] [2022-10-15 16:18:04,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643467166] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:18:04,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418516569] [2022-10-15 16:18:04,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:18:04,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:04,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:04,943 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:18:04,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 16:18:05,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:18:05,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:18:05,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 61 conjunts are in the unsatisfiable core [2022-10-15 16:18:05,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:18:05,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-15 16:18:06,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-10-15 16:18:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:06,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:18:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 16:18:08,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418516569] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:18:08,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:18:08,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 26] total 56 [2022-10-15 16:18:08,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834416903] [2022-10-15 16:18:08,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:18:08,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-10-15 16:18:08,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-10-15 16:18:08,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2903, Unknown=0, NotChecked=0, Total=3080 [2022-10-15 16:18:08,053 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand has 56 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 56 states have internal predecessors, (115), 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 16:18:09,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:09,591 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2022-10-15 16:18:09,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-15 16:18:09,592 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 56 states have internal predecessors, (115), 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 55 [2022-10-15 16:18:09,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:09,593 INFO L225 Difference]: With dead ends: 128 [2022-10-15 16:18:09,593 INFO L226 Difference]: Without dead ends: 128 [2022-10-15 16:18:09,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 68 SyntacticMatches, 17 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=208, Invalid=3452, Unknown=0, NotChecked=0, Total=3660 [2022-10-15 16:18:09,596 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 51 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:09,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 384 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-15 16:18:09,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-10-15 16:18:09,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2022-10-15 16:18:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 120 states have (on average 1.0583333333333333) internal successors, (127), 121 states have internal predecessors, (127), 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 16:18:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 127 transitions. [2022-10-15 16:18:09,602 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 127 transitions. Word has length 55 [2022-10-15 16:18:09,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:09,602 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 127 transitions. [2022-10-15 16:18:09,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 56 states have internal predecessors, (115), 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 16:18:09,603 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 127 transitions. [2022-10-15 16:18:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-15 16:18:09,605 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:09,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:09,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 16:18:09,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 16:18:09,821 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:18:09,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:09,822 INFO L85 PathProgramCache]: Analyzing trace with hash 456500960, now seen corresponding path program 1 times [2022-10-15 16:18:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:09,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477085717] [2022-10-15 16:18:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-15 16:18:10,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:10,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477085717] [2022-10-15 16:18:10,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477085717] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:18:10,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:18:10,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:18:10,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278383496] [2022-10-15 16:18:10,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:18:10,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:18:10,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:18:10,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:18:10,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:18:10,006 INFO L87 Difference]: Start difference. First operand 122 states and 127 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 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 16:18:10,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:18:10,021 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2022-10-15 16:18:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:18:10,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 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) Word has length 57 [2022-10-15 16:18:10,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:18:10,022 INFO L225 Difference]: With dead ends: 121 [2022-10-15 16:18:10,023 INFO L226 Difference]: Without dead ends: 76 [2022-10-15 16:18:10,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:18:10,024 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:18:10,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 60 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:18:10,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-10-15 16:18:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-10-15 16:18:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 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 16:18:10,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2022-10-15 16:18:10,027 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 57 [2022-10-15 16:18:10,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:18:10,028 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2022-10-15 16:18:10,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 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 16:18:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2022-10-15 16:18:10,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-15 16:18:10,030 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:18:10,030 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:18:10,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-15 16:18:10,031 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:18:10,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:18:10,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1499402067, now seen corresponding path program 3 times [2022-10-15 16:18:10,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:18:10,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552624110] [2022-10-15 16:18:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:18:10,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:18:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:18:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:18:15,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:18:15,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552624110] [2022-10-15 16:18:15,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552624110] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:18:15,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78902967] [2022-10-15 16:18:15,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 16:18:15,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:18:15,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:18:15,325 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:18:15,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 16:18:15,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-15 16:18:15,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:18:15,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 94 conjunts are in the unsatisfiable core [2022-10-15 16:18:15,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:18:15,439 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:18:15,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-15 16:18:24,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:18:24,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-15 16:18:24,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-15 16:18:24,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:18:24,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:18:24,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:18:24,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-15 16:18:24,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-15 16:18:24,184 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:18:24,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 65 treesize of output 49 [2022-10-15 16:18:24,196 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 31 treesize of output 23 [2022-10-15 16:18:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 7 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 16:18:24,871 INFO L328 TraceCheckSpWp]: Computing backward predicates...