/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/loops-crafted-1/in-de31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:02:48,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:02:48,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:02:48,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:02:48,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:02:48,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:02:48,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:02:48,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:02:48,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:02:48,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:02:48,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:02:48,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:02:48,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:02:48,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:02:48,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:02:48,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:02:48,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:02:48,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:02:48,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:02:48,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:02:48,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:02:48,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:02:48,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:02:48,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:02:48,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:02:48,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:02:48,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:02:48,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:02:48,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:02:48,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:02:48,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:02:48,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:02:48,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:02:48,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:02:48,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:02:48,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:02:48,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:02:48,654 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:02:48,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:02:48,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:02:48,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:02:48,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:02:48,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:02:48,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:02:48,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:02:48,661 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:02:48,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:02:48,663 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:02:48,663 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:02:48,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:02:48,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:02:48,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:02:48,664 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:02:48,664 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:02:48,664 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:02:48,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:02:48,664 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:02:48,665 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:02:48,665 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:02:48,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:02:48,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:02:48,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:02:48,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:02:48,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:02:48,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:02:48,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:02:48,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:02:48,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:02:49,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:02:49,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:02:49,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:02:49,148 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:02:49,148 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:02:49,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/in-de31.c [2022-10-15 17:02:49,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66998284c/f74d03fc5ad74979988f82bf2aef150a/FLAG90e7dca83 [2022-10-15 17:02:49,913 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:02:49,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de31.c [2022-10-15 17:02:49,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66998284c/f74d03fc5ad74979988f82bf2aef150a/FLAG90e7dca83 [2022-10-15 17:02:50,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66998284c/f74d03fc5ad74979988f82bf2aef150a [2022-10-15 17:02:50,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:02:50,265 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:02:50,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:02:50,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:02:50,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:02:50,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e27e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50, skipping insertion in model container [2022-10-15 17:02:50,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:02:50,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:02:50,552 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/loops-crafted-1/in-de31.c[368,381] [2022-10-15 17:02:50,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:02:50,583 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:02:50,598 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/loops-crafted-1/in-de31.c[368,381] [2022-10-15 17:02:50,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:02:50,620 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:02:50,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50 WrapperNode [2022-10-15 17:02:50,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:02:50,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:02:50,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:02:50,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:02:50,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,667 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2022-10-15 17:02:50,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:02:50,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:02:50,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:02:50,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:02:50,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,720 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:02:50,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:02:50,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:02:50,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:02:50,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50" (1/1) ... [2022-10-15 17:02:50,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:02:50,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:02:50,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:02:50,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:02:50,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:02:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:02:50,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:02:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:02:50,964 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:02:50,967 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:02:51,141 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:02:51,148 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:02:51,148 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 17:02:51,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:02:51 BoogieIcfgContainer [2022-10-15 17:02:51,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:02:51,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:02:51,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:02:51,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:02:51,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:02:50" (1/3) ... [2022-10-15 17:02:51,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192928bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:02:51, skipping insertion in model container [2022-10-15 17:02:51,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:02:50" (2/3) ... [2022-10-15 17:02:51,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192928bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:02:51, skipping insertion in model container [2022-10-15 17:02:51,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:02:51" (3/3) ... [2022-10-15 17:02:51,161 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de31.c [2022-10-15 17:02:51,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:02:51,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 17:02:51,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:02:51,251 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;@7f3eb3ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:02:51,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 17:02:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:51,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 17:02:51,265 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:02:51,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:02:51,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:02:51,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:02:51,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1157484939, now seen corresponding path program 1 times [2022-10-15 17:02:51,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:02:51,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581540098] [2022-10-15 17:02:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:02:51,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:02:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:02:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:02:52,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:02:52,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581540098] [2022-10-15 17:02:52,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581540098] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:02:52,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:02:52,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:02:52,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693139442] [2022-10-15 17:02:52,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:02:52,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:02:52,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:02:52,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:02:52,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:02:52,289 INFO L87 Difference]: Start difference. First operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 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 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:52,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:02:52,495 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-10-15 17:02:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:02:52,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 17:02:52,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:02:52,511 INFO L225 Difference]: With dead ends: 26 [2022-10-15 17:02:52,511 INFO L226 Difference]: Without dead ends: 22 [2022-10-15 17:02:52,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:02:52,523 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:02:52,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 44 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:02:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-10-15 17:02:52,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2022-10-15 17:02:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-10-15 17:02:52,573 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2022-10-15 17:02:52,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:02:52,574 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-10-15 17:02:52,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:52,574 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-10-15 17:02:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:02:52,575 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:02:52,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:02:52,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:02:52,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:02:52,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:02:52,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1522289698, now seen corresponding path program 1 times [2022-10-15 17:02:52,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:02:52,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34134387] [2022-10-15 17:02:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:02:52,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:02:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:02:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:02:52,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:02:52,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34134387] [2022-10-15 17:02:52,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34134387] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:02:52,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:02:52,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:02:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947939253] [2022-10-15 17:02:52,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:02:52,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:02:52,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:02:52,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:02:52,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:02:52,670 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:52,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:02:52,675 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2022-10-15 17:02:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:02:52,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 17:02:52,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:02:52,676 INFO L225 Difference]: With dead ends: 18 [2022-10-15 17:02:52,677 INFO L226 Difference]: Without dead ends: 11 [2022-10-15 17:02:52,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:02:52,679 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:02:52,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:02:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-10-15 17:02:52,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-10-15 17:02:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-10-15 17:02:52,684 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 10 [2022-10-15 17:02:52,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:02:52,685 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-10-15 17:02:52,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-10-15 17:02:52,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:02:52,686 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:02:52,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:02:52,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:02:52,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:02:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:02:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash 722526704, now seen corresponding path program 1 times [2022-10-15 17:02:52,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:02:52,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602506949] [2022-10-15 17:02:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:02:52,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:02:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:02:52,809 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 17:02:52,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:02:52,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602506949] [2022-10-15 17:02:52,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602506949] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:02:52,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349681319] [2022-10-15 17:02:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:02:52,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:02:52,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:02:52,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:02:52,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:02:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:02:52,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 17:02:52,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:02:53,015 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 17:02:53,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:02:53,084 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 17:02:53,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349681319] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:02:53,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:02:53,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-10-15 17:02:53,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933906992] [2022-10-15 17:02:53,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:02:53,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:02:53,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:02:53,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:02:53,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:02:53,090 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:53,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:02:53,292 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2022-10-15 17:02:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:02:53,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 17:02:53,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:02:53,298 INFO L225 Difference]: With dead ends: 32 [2022-10-15 17:02:53,299 INFO L226 Difference]: Without dead ends: 32 [2022-10-15 17:02:53,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-10-15 17:02:53,311 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:02:53,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 36 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:02:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-15 17:02:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-10-15 17:02:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:53,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-10-15 17:02:53,328 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 10 [2022-10-15 17:02:53,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:02:53,328 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-10-15 17:02:53,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-10-15 17:02:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 17:02:53,329 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:02:53,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:02:53,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 17:02:53,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:02:53,538 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:02:53,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:02:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash 19581631, now seen corresponding path program 1 times [2022-10-15 17:02:53,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:02:53,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820577658] [2022-10-15 17:02:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:02:53,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:02:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:02:54,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:02:54,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:02:54,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820577658] [2022-10-15 17:02:54,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820577658] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:02:54,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777802583] [2022-10-15 17:02:54,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:02:54,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:02:54,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:02:54,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:02:54,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:02:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:02:54,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-15 17:02:54,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:02:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:02:54,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:02:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:02:54,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777802583] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:02:54,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:02:54,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 19 [2022-10-15 17:02:54,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124663593] [2022-10-15 17:02:54,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:02:54,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-15 17:02:54,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:02:54,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-15 17:02:54,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-10-15 17:02:54,890 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:02:56,700 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2022-10-15 17:02:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-15 17:02:56,701 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 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 12 [2022-10-15 17:02:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:02:56,702 INFO L225 Difference]: With dead ends: 52 [2022-10-15 17:02:56,702 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 17:02:56,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2022-10-15 17:02:56,705 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 66 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:02:56,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 48 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:02:56,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 17:02:56,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 20. [2022-10-15 17:02:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 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 17:02:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-10-15 17:02:56,711 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 12 [2022-10-15 17:02:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:02:56,711 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-10-15 17:02:56,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:56,712 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2022-10-15 17:02:56,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 17:02:56,713 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:02:56,713 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:02:56,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-15 17:02:56,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 17:02:56,928 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:02:56,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:02:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1563380427, now seen corresponding path program 2 times [2022-10-15 17:02:56,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:02:56,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713995902] [2022-10-15 17:02:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:02:56,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:02:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:02:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:02:57,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:02:57,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713995902] [2022-10-15 17:02:57,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713995902] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:02:57,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834917689] [2022-10-15 17:02:57,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:02:57,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:02:57,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:02:57,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:02:57,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 17:02:57,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:02:57,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:02:57,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 17:02:57,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:02:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:02:57,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:02:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:02:57,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834917689] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:02:57,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:02:57,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-10-15 17:02:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507696259] [2022-10-15 17:02:57,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:02:57,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-15 17:02:57,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:02:57,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-15 17:02:57,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:02:57,259 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:58,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:02:58,084 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2022-10-15 17:02:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-15 17:02:58,084 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-15 17:02:58,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:02:58,086 INFO L225 Difference]: With dead ends: 70 [2022-10-15 17:02:58,086 INFO L226 Difference]: Without dead ends: 70 [2022-10-15 17:02:58,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2022-10-15 17:02:58,089 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 132 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:02:58,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 73 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:02:58,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-10-15 17:02:58,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 39. [2022-10-15 17:02:58,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:58,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-10-15 17:02:58,096 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 13 [2022-10-15 17:02:58,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:02:58,097 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-10-15 17:02:58,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:58,097 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-10-15 17:02:58,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 17:02:58,098 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:02:58,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:02:58,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-15 17:02:58,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:02:58,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:02:58,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:02:58,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1098222449, now seen corresponding path program 2 times [2022-10-15 17:02:58,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:02:58,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373542773] [2022-10-15 17:02:58,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:02:58,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:02:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:02:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 17:02:58,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:02:58,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373542773] [2022-10-15 17:02:58,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373542773] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:02:58,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543183224] [2022-10-15 17:02:58,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:02:58,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:02:58,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:02:58,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:02:58,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:02:58,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:02:58,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:02:58,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-15 17:02:58,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:02:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 17:02:58,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:02:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 17:02:58,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543183224] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:02:58,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:02:58,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-10-15 17:02:58,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755637023] [2022-10-15 17:02:58,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:02:58,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 17:02:58,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:02:58,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 17:02:58,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-10-15 17:02:58,606 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:02:58,777 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2022-10-15 17:02:58,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 17:02:58,778 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 17:02:58,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:02:58,779 INFO L225 Difference]: With dead ends: 64 [2022-10-15 17:02:58,779 INFO L226 Difference]: Without dead ends: 62 [2022-10-15 17:02:58,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:02:58,781 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:02:58,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 51 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:02:58,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-10-15 17:02:58,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2022-10-15 17:02:58,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2022-10-15 17:02:58,788 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 14 [2022-10-15 17:02:58,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:02:58,789 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2022-10-15 17:02:58,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:02:58,789 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2022-10-15 17:02:58,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 17:02:58,790 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:02:58,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:02:58,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 17:02:58,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:02:58,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:02:58,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:02:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash 854515253, now seen corresponding path program 3 times [2022-10-15 17:02:58,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:02:58,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804775528] [2022-10-15 17:02:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:02:58,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:02:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:02:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:02:59,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:02:59,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804775528] [2022-10-15 17:02:59,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804775528] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:02:59,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376382764] [2022-10-15 17:02:59,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:02:59,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:02:59,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:02:59,510 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:02:59,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:02:59,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 17:02:59,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:02:59,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 30 conjunts are in the unsatisfiable core [2022-10-15 17:02:59,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:02:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:02:59,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:03:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:03:00,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376382764] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:03:00,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:03:00,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 27 [2022-10-15 17:03:00,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334572085] [2022-10-15 17:03:00,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:03:00,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-15 17:03:00,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:03:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-15 17:03:00,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-10-15 17:03:00,255 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:01,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:03:01,592 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2022-10-15 17:03:01,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-15 17:03:01,593 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-15 17:03:01,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:03:01,594 INFO L225 Difference]: With dead ends: 88 [2022-10-15 17:03:01,594 INFO L226 Difference]: Without dead ends: 73 [2022-10-15 17:03:01,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=276, Invalid=1704, Unknown=0, NotChecked=0, Total=1980 [2022-10-15 17:03:01,596 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 65 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:03:01,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 91 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:03:01,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-10-15 17:03:01,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2022-10-15 17:03:01,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2022-10-15 17:03:01,603 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 15 [2022-10-15 17:03:01,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:03:01,604 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2022-10-15 17:03:01,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2022-10-15 17:03:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-15 17:03:01,605 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:03:01,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:03:01,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:03:01,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:03:01,820 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:03:01,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:03:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1966551549, now seen corresponding path program 4 times [2022-10-15 17:03:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:03:01,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406805626] [2022-10-15 17:03:01,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:03:01,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:03:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:03:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 17:03:01,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:03:01,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406805626] [2022-10-15 17:03:01,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406805626] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:03:01,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437222936] [2022-10-15 17:03:01,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:03:01,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:03:01,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:03:01,981 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 17:03:01,982 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 17:03:02,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:03:02,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:03:02,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-15 17:03:02,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:03:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 17:03:02,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:03:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 17:03:02,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437222936] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:03:02,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:03:02,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-10-15 17:03:02,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747538929] [2022-10-15 17:03:02,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:03:02,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-15 17:03:02,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:03:02,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-15 17:03:02,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-10-15 17:03:02,249 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:03:02,598 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2022-10-15 17:03:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-15 17:03:02,599 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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 17 [2022-10-15 17:03:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:03:02,600 INFO L225 Difference]: With dead ends: 75 [2022-10-15 17:03:02,600 INFO L226 Difference]: Without dead ends: 69 [2022-10-15 17:03:02,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-10-15 17:03:02,601 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:03:02,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 81 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:03:02,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-15 17:03:02,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2022-10-15 17:03:02,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2022-10-15 17:03:02,608 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 17 [2022-10-15 17:03:02,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:03:02,608 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2022-10-15 17:03:02,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:02,609 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2022-10-15 17:03:02,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-15 17:03:02,609 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:03:02,610 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:03:02,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-15 17:03:02,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:03:02,824 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:03:02,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:03:02,825 INFO L85 PathProgramCache]: Analyzing trace with hash -73381852, now seen corresponding path program 5 times [2022-10-15 17:03:02,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:03:02,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498124394] [2022-10-15 17:03:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:03:02,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:03:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:03:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:03:02,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:03:02,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498124394] [2022-10-15 17:03:02,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498124394] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:03:02,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680989827] [2022-10-15 17:03:02,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 17:03:02,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:03:02,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:03:02,994 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 17:03:03,002 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 17:03:03,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-10-15 17:03:03,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:03:03,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 17:03:03,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:03:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:03:03,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:03:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:03:03,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680989827] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:03:03,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:03:03,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-10-15 17:03:03,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937170258] [2022-10-15 17:03:03,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:03:03,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-15 17:03:03,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:03:03,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-15 17:03:03,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-10-15 17:03:03,325 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:08,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:03:08,981 INFO L93 Difference]: Finished difference Result 145 states and 185 transitions. [2022-10-15 17:03:08,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-15 17:03:08,981 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-10-15 17:03:08,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:03:08,983 INFO L225 Difference]: With dead ends: 145 [2022-10-15 17:03:08,983 INFO L226 Difference]: Without dead ends: 145 [2022-10-15 17:03:08,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1418, Invalid=3838, Unknown=0, NotChecked=0, Total=5256 [2022-10-15 17:03:08,986 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 252 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:03:08,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 121 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:03:08,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-10-15 17:03:08,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 71. [2022-10-15 17:03:08,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4) internal successors, (98), 70 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 98 transitions. [2022-10-15 17:03:08,995 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 98 transitions. Word has length 17 [2022-10-15 17:03:08,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:03:08,995 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 98 transitions. [2022-10-15 17:03:08,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:08,996 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 98 transitions. [2022-10-15 17:03:08,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-15 17:03:08,997 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:03:08,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:03:09,029 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 17:03:09,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:03:09,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:03:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:03:09,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1333529985, now seen corresponding path program 6 times [2022-10-15 17:03:09,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:03:09,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770211775] [2022-10-15 17:03:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:03:09,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:03:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:03:10,068 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:03:10,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:03:10,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770211775] [2022-10-15 17:03:10,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770211775] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:03:10,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341674972] [2022-10-15 17:03:10,069 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-15 17:03:10,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:03:10,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:03:10,070 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 17:03:10,081 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 17:03:10,156 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-10-15 17:03:10,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:03:10,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 40 conjunts are in the unsatisfiable core [2022-10-15 17:03:10,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:03:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:03:10,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:03:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:03:11,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341674972] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:03:11,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:03:11,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 12] total 34 [2022-10-15 17:03:11,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791478781] [2022-10-15 17:03:11,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:03:11,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-15 17:03:11,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:03:11,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-15 17:03:11,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 17:03:11,181 INFO L87 Difference]: Start difference. First operand 71 states and 98 transitions. Second operand has 34 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:03:13,829 INFO L93 Difference]: Finished difference Result 115 states and 145 transitions. [2022-10-15 17:03:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-10-15 17:03:13,830 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 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) Word has length 18 [2022-10-15 17:03:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:03:13,831 INFO L225 Difference]: With dead ends: 115 [2022-10-15 17:03:13,831 INFO L226 Difference]: Without dead ends: 99 [2022-10-15 17:03:13,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=361, Invalid=2501, Unknown=0, NotChecked=0, Total=2862 [2022-10-15 17:03:13,834 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 59 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-15 17:03:13,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 153 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-15 17:03:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-10-15 17:03:13,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2022-10-15 17:03:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 69 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 95 transitions. [2022-10-15 17:03:13,841 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 95 transitions. Word has length 18 [2022-10-15 17:03:13,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:03:13,841 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 95 transitions. [2022-10-15 17:03:13,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 95 transitions. [2022-10-15 17:03:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 17:03:13,843 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:03:13,843 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:03:13,871 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 17:03:14,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-15 17:03:14,058 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:03:14,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:03:14,059 INFO L85 PathProgramCache]: Analyzing trace with hash 159423631, now seen corresponding path program 7 times [2022-10-15 17:03:14,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:03:14,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514282351] [2022-10-15 17:03:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:03:14,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:03:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:03:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 17:03:14,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:03:14,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514282351] [2022-10-15 17:03:14,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514282351] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:03:14,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240726719] [2022-10-15 17:03:14,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-15 17:03:14,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:03:14,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:03:14,229 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 17:03:14,250 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 17:03:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:03:14,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-15 17:03:14,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:03:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 17:03:14,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:03:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 17:03:14,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240726719] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:03:14,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:03:14,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-10-15 17:03:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532071504] [2022-10-15 17:03:14,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:03:14,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-15 17:03:14,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:03:14,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-15 17:03:14,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2022-10-15 17:03:14,593 INFO L87 Difference]: Start difference. First operand 70 states and 95 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:15,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:03:15,185 INFO L93 Difference]: Finished difference Result 109 states and 136 transitions. [2022-10-15 17:03:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-15 17:03:15,185 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-15 17:03:15,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:03:15,186 INFO L225 Difference]: With dead ends: 109 [2022-10-15 17:03:15,186 INFO L226 Difference]: Without dead ends: 101 [2022-10-15 17:03:15,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2022-10-15 17:03:15,188 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 27 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:03:15,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 78 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:03:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-10-15 17:03:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 77. [2022-10-15 17:03:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.381578947368421) internal successors, (105), 76 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:15,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2022-10-15 17:03:15,195 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 20 [2022-10-15 17:03:15,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:03:15,195 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2022-10-15 17:03:15,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2022-10-15 17:03:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 17:03:15,197 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:03:15,197 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:03:15,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 17:03:15,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:03:15,410 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:03:15,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:03:15,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2017092107, now seen corresponding path program 8 times [2022-10-15 17:03:15,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:03:15,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090275719] [2022-10-15 17:03:15,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:03:15,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:03:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:03:16,365 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 17:03:16,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:03:16,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090275719] [2022-10-15 17:03:16,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090275719] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:03:16,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791144397] [2022-10-15 17:03:16,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:03:16,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:03:16,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:03:16,368 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:03:16,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 17:03:16,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:03:16,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:03:16,459 WARN L261 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-15 17:03:16,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:03:17,097 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 17:03:17,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:03:18,156 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 17:03:18,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791144397] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:03:18,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:03:18,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 14] total 41 [2022-10-15 17:03:18,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203938667] [2022-10-15 17:03:18,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:03:18,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-10-15 17:03:18,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:03:18,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-10-15 17:03:18,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2022-10-15 17:03:18,160 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand has 41 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 41 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:24,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:03:24,612 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2022-10-15 17:03:24,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-10-15 17:03:24,612 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 41 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-10-15 17:03:24,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:03:24,613 INFO L225 Difference]: With dead ends: 130 [2022-10-15 17:03:24,613 INFO L226 Difference]: Without dead ends: 109 [2022-10-15 17:03:24,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=483, Invalid=3677, Unknown=0, NotChecked=0, Total=4160 [2022-10-15 17:03:24,615 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 92 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:03:24,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 154 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-15 17:03:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-10-15 17:03:24,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 71. [2022-10-15 17:03:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4) internal successors, (98), 70 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 98 transitions. [2022-10-15 17:03:24,621 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 98 transitions. Word has length 21 [2022-10-15 17:03:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:03:24,621 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 98 transitions. [2022-10-15 17:03:24,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 41 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 98 transitions. [2022-10-15 17:03:24,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-15 17:03:24,623 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:03:24,623 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:03:24,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 17:03:24,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-15 17:03:24,830 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:03:24,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:03:24,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2027051824, now seen corresponding path program 9 times [2022-10-15 17:03:24,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:03:24,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288581957] [2022-10-15 17:03:24,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:03:24,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:03:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:03:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 17:03:25,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:03:25,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288581957] [2022-10-15 17:03:25,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288581957] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:03:25,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436755411] [2022-10-15 17:03:25,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:03:25,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:03:25,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:03:25,096 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:03:25,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 17:03:25,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-15 17:03:25,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:03:25,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 17:03:25,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:03:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-15 17:03:25,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:03:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-15 17:03:25,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436755411] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:03:25,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:03:25,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 24 [2022-10-15 17:03:25,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613150884] [2022-10-15 17:03:25,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:03:25,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-15 17:03:25,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:03:25,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-15 17:03:25,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-10-15 17:03:25,435 INFO L87 Difference]: Start difference. First operand 71 states and 98 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:26,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:03:26,531 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2022-10-15 17:03:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-10-15 17:03:26,532 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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 22 [2022-10-15 17:03:26,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:03:26,532 INFO L225 Difference]: With dead ends: 115 [2022-10-15 17:03:26,533 INFO L226 Difference]: Without dead ends: 115 [2022-10-15 17:03:26,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=428, Invalid=1828, Unknown=0, NotChecked=0, Total=2256 [2022-10-15 17:03:26,534 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 113 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:03:26,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 159 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:03:26,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-15 17:03:26,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 78. [2022-10-15 17:03:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2987012987012987) internal successors, (100), 77 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2022-10-15 17:03:26,540 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 22 [2022-10-15 17:03:26,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:03:26,540 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2022-10-15 17:03:26,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2022-10-15 17:03:26,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-15 17:03:26,542 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:03:26,542 INFO L195 NwaCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:03:26,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 17:03:26,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 17:03:26,753 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:03:26,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:03:26,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1622674000, now seen corresponding path program 3 times [2022-10-15 17:03:26,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:03:26,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399147654] [2022-10-15 17:03:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:03:26,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:03:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:03:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:03:27,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:03:27,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399147654] [2022-10-15 17:03:27,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399147654] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:03:27,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333538426] [2022-10-15 17:03:27,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:03:27,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:03:27,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:03:27,047 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:03:27,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 17:03:27,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-10-15 17:03:27,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:03:27,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 31 conjunts are in the unsatisfiable core [2022-10-15 17:03:27,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:03:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:03:27,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:03:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:03:27,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333538426] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:03:27,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:03:27,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2022-10-15 17:03:27,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742594197] [2022-10-15 17:03:27,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:03:27,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-15 17:03:27,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:03:27,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-15 17:03:27,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:03:27,855 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:03:40,140 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)