/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/loop-lit/gr2006.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:01:10,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:01:10,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:01:10,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:01:10,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:01:10,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:01:10,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:01:10,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:01:10,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:01:10,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:01:10,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:01:10,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:01:10,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:01:10,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:01:10,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:01:10,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:01:10,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:01:10,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:01:10,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:01:10,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:01:10,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:01:10,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:01:10,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:01:10,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:01:10,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:01:10,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:01:10,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:01:10,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:01:10,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:01:10,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:01:10,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:01:10,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:01:10,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:01:10,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:01:10,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:01:10,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:01:10,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:01:10,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:01:10,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:01:10,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:01:10,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:01:10,691 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 17:01:10,722 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:01:10,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:01:10,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:01:10,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:01:10,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:01:10,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:01:10,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:01:10,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:01:10,726 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:01:10,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:01:10,726 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:01:10,726 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:01:10,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:01:10,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:01:10,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:01:10,727 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:01:10,727 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:01:10,728 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:01:10,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:01:10,728 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:01:10,728 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:01:10,728 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:01:10,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:01:10,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:01:10,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:01:10,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:01:10,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:01:10,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:01:10,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:01:10,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:01:10,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:01:11,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:01:11,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:01:11,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:01:11,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:01:11,135 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:01:11,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gr2006.i [2022-10-15 17:01:11,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b0c84e24/b21309cb5b644526b14e343a132b4ad2/FLAG1eca1b5f0 [2022-10-15 17:01:11,812 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:01:11,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i [2022-10-15 17:01:11,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b0c84e24/b21309cb5b644526b14e343a132b4ad2/FLAG1eca1b5f0 [2022-10-15 17:01:12,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b0c84e24/b21309cb5b644526b14e343a132b4ad2 [2022-10-15 17:01:12,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:01:12,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:01:12,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:01:12,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:01:12,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:01:12,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f41a16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12, skipping insertion in model container [2022-10-15 17:01:12,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:01:12,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:01:12,505 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/loop-lit/gr2006.i[895,908] [2022-10-15 17:01:12,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:01:12,537 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:01:12,555 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/loop-lit/gr2006.i[895,908] [2022-10-15 17:01:12,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:01:12,583 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:01:12,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12 WrapperNode [2022-10-15 17:01:12,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:01:12,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:01:12,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:01:12,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:01:12,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,634 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2022-10-15 17:01:12,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:01:12,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:01:12,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:01:12,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:01:12,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,670 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:01:12,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:01:12,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:01:12,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:01:12,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12" (1/1) ... [2022-10-15 17:01:12,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:01:12,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:12,725 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 17:01:12,739 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 17:01:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:01:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:01:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:01:12,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:01:12,875 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:01:12,878 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:01:13,081 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:01:13,098 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:01:13,098 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 17:01:13,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:01:13 BoogieIcfgContainer [2022-10-15 17:01:13,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:01:13,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:01:13,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:01:13,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:01:13,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:01:12" (1/3) ... [2022-10-15 17:01:13,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445ff68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:01:13, skipping insertion in model container [2022-10-15 17:01:13,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:01:12" (2/3) ... [2022-10-15 17:01:13,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445ff68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:01:13, skipping insertion in model container [2022-10-15 17:01:13,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:01:13" (3/3) ... [2022-10-15 17:01:13,129 INFO L112 eAbstractionObserver]: Analyzing ICFG gr2006.i [2022-10-15 17:01:13,196 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:01:13,197 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 17:01:13,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:01:13,351 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;@aca295a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:01:13,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 17:01:13,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 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 17:01:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:01:13,369 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:13,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:01:13,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:13,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:13,384 INFO L85 PathProgramCache]: Analyzing trace with hash 890091623, now seen corresponding path program 1 times [2022-10-15 17:01:13,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:13,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666583163] [2022-10-15 17:01:13,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:13,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:13,620 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 17:01:13,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:13,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666583163] [2022-10-15 17:01:13,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666583163] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:13,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:01:13,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:01:13,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800234631] [2022-10-15 17:01:13,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:13,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 17:01:13,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:13,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 17:01:13,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 17:01:13,668 INFO L87 Difference]: Start difference. First operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:13,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:13,680 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-10-15 17:01:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 17:01:13,683 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:01:13,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:13,692 INFO L225 Difference]: With dead ends: 14 [2022-10-15 17:01:13,692 INFO L226 Difference]: Without dead ends: 12 [2022-10-15 17:01:13,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 17:01:13,699 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:13,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:01:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-10-15 17:01:13,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-10-15 17:01:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 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 17:01:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-10-15 17:01:13,736 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 6 [2022-10-15 17:01:13,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:13,736 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-10-15 17:01:13,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:13,737 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-10-15 17:01:13,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 17:01:13,737 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:13,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:13,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:01:13,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:13,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:13,739 INFO L85 PathProgramCache]: Analyzing trace with hash 297871632, now seen corresponding path program 1 times [2022-10-15 17:01:13,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:13,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519905743] [2022-10-15 17:01:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:13,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:13,824 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 17:01:13,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:13,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519905743] [2022-10-15 17:01:13,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519905743] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:13,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:01:13,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:01:13,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526166016] [2022-10-15 17:01:13,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:13,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:01:13,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:13,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:01:13,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:01:13,829 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:13,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:13,849 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-10-15 17:01:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:01:13,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 17:01:13,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:13,851 INFO L225 Difference]: With dead ends: 22 [2022-10-15 17:01:13,851 INFO L226 Difference]: Without dead ends: 22 [2022-10-15 17:01:13,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 17:01:13,854 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:13,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:01:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-10-15 17:01:13,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 14. [2022-10-15 17:01:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:13,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-10-15 17:01:13,860 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2022-10-15 17:01:13,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:13,861 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-10-15 17:01:13,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:13,861 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-10-15 17:01:13,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 17:01:13,862 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:13,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:13,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:01:13,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:13,864 INFO L85 PathProgramCache]: Analyzing trace with hash 296024590, now seen corresponding path program 1 times [2022-10-15 17:01:13,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:13,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706484910] [2022-10-15 17:01:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:13,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:13,938 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 17:01:13,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:13,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706484910] [2022-10-15 17:01:13,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706484910] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:13,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:01:13,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:01:13,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772697486] [2022-10-15 17:01:13,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:13,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:01:13,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:13,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:01:13,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:01:13,943 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:13,968 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-10-15 17:01:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:01:13,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 17:01:13,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:13,970 INFO L225 Difference]: With dead ends: 17 [2022-10-15 17:01:13,970 INFO L226 Difference]: Without dead ends: 17 [2022-10-15 17:01:13,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:01:13,972 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:13,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:01:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-10-15 17:01:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-10-15 17:01:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-10-15 17:01:13,978 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 8 [2022-10-15 17:01:13,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:13,978 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-10-15 17:01:13,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-10-15 17:01:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-15 17:01:13,980 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:13,980 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:13,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:01:13,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:13,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:13,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1661002755, now seen corresponding path program 1 times [2022-10-15 17:01:13,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:13,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883024825] [2022-10-15 17:01:13,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:13,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:01:14,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:14,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883024825] [2022-10-15 17:01:14,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883024825] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:14,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575264360] [2022-10-15 17:01:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:14,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:14,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:14,148 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 17:01:14,156 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 17:01:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:14,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 17:01:14,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:01:14,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:01:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:01:14,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575264360] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:01:14,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:01:14,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-15 17:01:14,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61377004] [2022-10-15 17:01:14,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:01:14,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:01:14,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:14,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:01:14,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:01:14,340 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 17:01:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:14,409 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-10-15 17:01:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:01:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) Word has length 11 [2022-10-15 17:01:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:14,411 INFO L225 Difference]: With dead ends: 34 [2022-10-15 17:01:14,411 INFO L226 Difference]: Without dead ends: 34 [2022-10-15 17:01:14,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:01:14,414 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:14,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 68 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:01:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-10-15 17:01:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2022-10-15 17:01:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-10-15 17:01:14,421 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 11 [2022-10-15 17:01:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:14,422 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-10-15 17:01:14,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 17:01:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-10-15 17:01:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 17:01:14,423 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:14,423 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:14,467 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 17:01:14,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:14,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:14,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:14,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1073415472, now seen corresponding path program 2 times [2022-10-15 17:01:14,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:14,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903520430] [2022-10-15 17:01:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:14,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:01:14,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:14,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903520430] [2022-10-15 17:01:14,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903520430] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:14,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984870134] [2022-10-15 17:01:14,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:01:14,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:14,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:14,896 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 17:01:14,918 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 17:01:14,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:01:14,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:01:14,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 17:01:14,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:01:15,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:01:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:01:15,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984870134] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:01:15,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:01:15,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-10-15 17:01:15,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794880511] [2022-10-15 17:01:15,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:01:15,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-15 17:01:15,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:15,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-15 17:01:15,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:01:15,211 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 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 17:01:15,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:15,363 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-10-15 17:01:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-15 17:01:15,364 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 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 20 [2022-10-15 17:01:15,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:15,365 INFO L225 Difference]: With dead ends: 43 [2022-10-15 17:01:15,365 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 17:01:15,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2022-10-15 17:01:15,368 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:15,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 61 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:01:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 17:01:15,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2022-10-15 17:01:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:15,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-10-15 17:01:15,377 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 20 [2022-10-15 17:01:15,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:15,377 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-10-15 17:01:15,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 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 17:01:15,378 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-10-15 17:01:15,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-15 17:01:15,379 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:15,379 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 5, 5, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:15,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 17:01:15,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:15,596 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1219917565, now seen corresponding path program 3 times [2022-10-15 17:01:15,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:15,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041105105] [2022-10-15 17:01:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:15,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 73 proven. 40 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 17:01:15,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:15,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041105105] [2022-10-15 17:01:15,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041105105] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:15,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279240469] [2022-10-15 17:01:15,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:01:15,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:15,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:15,749 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 17:01:15,771 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 17:01:15,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-10-15 17:01:15,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:01:15,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 17:01:15,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 73 proven. 40 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 17:01:15,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:01:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 73 proven. 40 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 17:01:16,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279240469] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:01:16,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:01:16,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-10-15 17:01:16,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663500882] [2022-10-15 17:01:16,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:01:16,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-15 17:01:16,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:16,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-15 17:01:16,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:01:16,023 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 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 17:01:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:16,067 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2022-10-15 17:01:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 17:01:16,068 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 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 35 [2022-10-15 17:01:16,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:16,069 INFO L225 Difference]: With dead ends: 63 [2022-10-15 17:01:16,069 INFO L226 Difference]: Without dead ends: 63 [2022-10-15 17:01:16,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:01:16,071 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:16,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 44 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:01:16,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-10-15 17:01:16,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2022-10-15 17:01:16,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 59 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:16,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2022-10-15 17:01:16,081 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 35 [2022-10-15 17:01:16,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:16,081 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2022-10-15 17:01:16,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 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 17:01:16,082 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2022-10-15 17:01:16,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-10-15 17:01:16,084 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:16,084 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 12, 5, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:16,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 17:01:16,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:16,299 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:16,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:16,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1918910832, now seen corresponding path program 4 times [2022-10-15 17:01:16,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:16,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890937917] [2022-10-15 17:01:16,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:16,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 164 proven. 222 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 17:01:16,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:16,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890937917] [2022-10-15 17:01:16,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890937917] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:16,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704048365] [2022-10-15 17:01:16,639 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:01:16,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:16,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:16,643 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 17:01:16,649 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 17:01:16,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:01:16,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:01:16,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-15 17:01:16,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 164 proven. 222 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 17:01:16,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:01:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 164 proven. 222 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 17:01:17,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704048365] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:01:17,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:01:17,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2022-10-15 17:01:17,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534552357] [2022-10-15 17:01:17,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:01:17,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-10-15 17:01:17,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:17,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-10-15 17:01:17,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2022-10-15 17:01:17,120 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 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 17:01:17,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:17,238 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2022-10-15 17:01:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-15 17:01:17,239 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 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 56 [2022-10-15 17:01:17,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:17,241 INFO L225 Difference]: With dead ends: 105 [2022-10-15 17:01:17,241 INFO L226 Difference]: Without dead ends: 105 [2022-10-15 17:01:17,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2022-10-15 17:01:17,243 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:17,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 86 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:01:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-10-15 17:01:17,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2022-10-15 17:01:17,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.07) internal successors, (107), 101 states have internal predecessors, (107), 0 states have call successors, (0), 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 17:01:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2022-10-15 17:01:17,263 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 56 [2022-10-15 17:01:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:17,264 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2022-10-15 17:01:17,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 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 17:01:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2022-10-15 17:01:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-10-15 17:01:17,272 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:17,272 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 26, 5, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:17,303 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 17:01:17,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:17,488 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:17,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:17,489 INFO L85 PathProgramCache]: Analyzing trace with hash -707387216, now seen corresponding path program 5 times [2022-10-15 17:01:17,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:17,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865960990] [2022-10-15 17:01:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:17,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 346 proven. 1027 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 17:01:18,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:18,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865960990] [2022-10-15 17:01:18,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865960990] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:18,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358372205] [2022-10-15 17:01:18,457 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 17:01:18,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:18,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:18,461 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 17:01:18,486 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 17:01:18,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-10-15 17:01:18,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:01:18,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-15 17:01:18,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 346 proven. 1027 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 17:01:18,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:01:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 346 proven. 1027 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 17:01:19,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358372205] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:01:19,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:01:19,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 53 [2022-10-15 17:01:19,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684104552] [2022-10-15 17:01:19,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:01:19,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-10-15 17:01:19,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:19,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-10-15 17:01:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-10-15 17:01:19,655 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 53 states, 53 states have (on average 3.0943396226415096) internal successors, (164), 53 states have internal predecessors, (164), 0 states have call successors, (0), 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 17:01:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:19,856 INFO L93 Difference]: Finished difference Result 177 states and 182 transitions. [2022-10-15 17:01:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-10-15 17:01:19,857 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.0943396226415096) internal successors, (164), 53 states have internal predecessors, (164), 0 states have call successors, (0), 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 98 [2022-10-15 17:01:19,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:19,866 INFO L225 Difference]: With dead ends: 177 [2022-10-15 17:01:19,867 INFO L226 Difference]: Without dead ends: 177 [2022-10-15 17:01:19,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 168 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-10-15 17:01:19,870 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 50 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:19,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 90 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:01:19,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-10-15 17:01:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 174. [2022-10-15 17:01:19,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 172 states have (on average 1.0406976744186047) internal successors, (179), 173 states have internal predecessors, (179), 0 states have call successors, (0), 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 17:01:19,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 179 transitions. [2022-10-15 17:01:19,906 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 179 transitions. Word has length 98 [2022-10-15 17:01:19,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:19,908 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 179 transitions. [2022-10-15 17:01:19,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.0943396226415096) internal successors, (164), 53 states have internal predecessors, (164), 0 states have call successors, (0), 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 17:01:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 179 transitions. [2022-10-15 17:01:19,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-10-15 17:01:19,912 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:19,912 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 50, 5, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:19,959 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 17:01:20,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:20,130 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:20,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:20,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1661700912, now seen corresponding path program 6 times [2022-10-15 17:01:20,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:20,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062881267] [2022-10-15 17:01:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:20,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 1416 proven. 57 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2022-10-15 17:01:20,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:20,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062881267] [2022-10-15 17:01:20,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062881267] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:20,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996296360] [2022-10-15 17:01:20,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-15 17:01:20,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:20,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:20,567 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 17:01:20,585 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 17:01:20,671 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2022-10-15 17:01:20,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:01:20,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 17:01:20,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 1416 proven. 57 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2022-10-15 17:01:20,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:01:20,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 1416 proven. 57 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2022-10-15 17:01:20,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996296360] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:01:20,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:01:20,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-10-15 17:01:20,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873906126] [2022-10-15 17:01:20,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:01:20,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:01:20,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:20,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:01:20,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:01:20,860 INFO L87 Difference]: Start difference. First operand 174 states and 179 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:20,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:20,890 INFO L93 Difference]: Finished difference Result 190 states and 200 transitions. [2022-10-15 17:01:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:01:20,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2022-10-15 17:01:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:20,894 INFO L225 Difference]: With dead ends: 190 [2022-10-15 17:01:20,894 INFO L226 Difference]: Without dead ends: 190 [2022-10-15 17:01:20,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 333 SyntacticMatches, 12 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:01:20,896 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:20,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:01:20,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-10-15 17:01:20,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 177. [2022-10-15 17:01:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.0457142857142858) internal successors, (183), 176 states have internal predecessors, (183), 0 states have call successors, (0), 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 17:01:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 183 transitions. [2022-10-15 17:01:20,908 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 183 transitions. Word has length 170 [2022-10-15 17:01:20,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:20,908 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 183 transitions. [2022-10-15 17:01:20,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:20,909 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 183 transitions. [2022-10-15 17:01:20,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-10-15 17:01:20,912 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:20,912 INFO L195 NwaCegarLoop]: trace histogram [56, 55, 50, 6, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:20,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:01:21,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:21,125 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1272078235, now seen corresponding path program 7 times [2022-10-15 17:01:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:21,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651692092] [2022-10-15 17:01:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 1681 proven. 86 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2022-10-15 17:01:21,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:21,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651692092] [2022-10-15 17:01:21,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651692092] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:21,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899185068] [2022-10-15 17:01:21,481 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-15 17:01:21,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:21,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:21,483 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:01:21,487 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 17:01:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:21,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 58 conjunts are in the unsatisfiable core [2022-10-15 17:01:21,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 4518 proven. 86 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 17:01:23,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:01:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 4518 proven. 86 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 17:01:24,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899185068] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:01:24,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:01:24,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 53, 53] total 97 [2022-10-15 17:01:24,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869244765] [2022-10-15 17:01:24,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:01:24,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-10-15 17:01:24,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:24,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-10-15 17:01:24,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-10-15 17:01:24,330 INFO L87 Difference]: Start difference. First operand 177 states and 183 transitions. Second operand has 97 states, 97 states have (on average 3.1752577319587627) internal successors, (308), 97 states have internal predecessors, (308), 0 states have call successors, (0), 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 17:01:25,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:25,093 INFO L93 Difference]: Finished difference Result 1032 states and 1308 transitions. [2022-10-15 17:01:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-10-15 17:01:25,094 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.1752577319587627) internal successors, (308), 97 states have internal predecessors, (308), 0 states have call successors, (0), 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 173 [2022-10-15 17:01:25,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:25,100 INFO L225 Difference]: With dead ends: 1032 [2022-10-15 17:01:25,100 INFO L226 Difference]: Without dead ends: 1032 [2022-10-15 17:01:25,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 251 SyntacticMatches, 13 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5014 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-10-15 17:01:25,106 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 17 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:25,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 219 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:01:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2022-10-15 17:01:25,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 312. [2022-10-15 17:01:25,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 310 states have (on average 1.1709677419354838) internal successors, (363), 311 states have internal predecessors, (363), 0 states have call successors, (0), 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 17:01:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 363 transitions. [2022-10-15 17:01:25,124 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 363 transitions. Word has length 173 [2022-10-15 17:01:25,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:25,124 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 363 transitions. [2022-10-15 17:01:25,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.1752577319587627) internal successors, (308), 97 states have internal predecessors, (308), 0 states have call successors, (0), 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 17:01:25,125 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 363 transitions. [2022-10-15 17:01:25,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-10-15 17:01:25,132 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:25,132 INFO L195 NwaCegarLoop]: trace histogram [101, 100, 51, 50, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:25,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 17:01:25,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:25,346 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:25,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:25,347 INFO L85 PathProgramCache]: Analyzing trace with hash -338193904, now seen corresponding path program 8 times [2022-10-15 17:01:25,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:25,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296043203] [2022-10-15 17:01:25,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:25,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:01:33,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:33,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296043203] [2022-10-15 17:01:33,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296043203] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:33,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491437027] [2022-10-15 17:01:33,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:01:33,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:33,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:33,467 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 17:01:33,476 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 17:01:33,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:01:33,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:01:33,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 205 conjunts are in the unsatisfiable core [2022-10-15 17:01:33,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:01:37,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:01:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:01:38,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491437027] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:01:38,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:01:38,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104, 104] total 155 [2022-10-15 17:01:38,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125274910] [2022-10-15 17:01:38,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:01:38,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-10-15 17:01:38,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:38,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-10-15 17:01:38,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2858, Invalid=21012, Unknown=0, NotChecked=0, Total=23870 [2022-10-15 17:01:38,904 INFO L87 Difference]: Start difference. First operand 312 states and 363 transitions. Second operand has 155 states, 155 states have (on average 2.967741935483871) internal successors, (460), 155 states have internal predecessors, (460), 0 states have call successors, (0), 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 17:01:49,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:49,793 INFO L93 Difference]: Finished difference Result 4537 states and 4588 transitions. [2022-10-15 17:01:49,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-10-15 17:01:49,795 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 2.967741935483871) internal successors, (460), 155 states have internal predecessors, (460), 0 states have call successors, (0), 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 308 [2022-10-15 17:01:49,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:49,819 INFO L225 Difference]: With dead ends: 4537 [2022-10-15 17:01:49,819 INFO L226 Difference]: Without dead ends: 4537 [2022-10-15 17:01:49,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 560 SyntacticMatches, 6 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11926 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=3059, Invalid=38761, Unknown=0, NotChecked=0, Total=41820 [2022-10-15 17:01:49,830 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 404 mSDsluCounter, 23493 mSDsCounter, 0 mSdLazyCounter, 17277 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 23895 SdHoareTripleChecker+Invalid, 17335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 17277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:49,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 23895 Invalid, 17335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 17277 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-10-15 17:01:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4537 states. [2022-10-15 17:01:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4537 to 4191. [2022-10-15 17:01:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 4189 states have (on average 1.024588207209358) internal successors, (4292), 4190 states have internal predecessors, (4292), 0 states have call successors, (0), 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 17:01:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 4292 transitions. [2022-10-15 17:01:49,918 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 4292 transitions. Word has length 308 [2022-10-15 17:01:49,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:49,920 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 4292 transitions. [2022-10-15 17:01:49,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 2.967741935483871) internal successors, (460), 155 states have internal predecessors, (460), 0 states have call successors, (0), 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 17:01:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 4292 transitions. [2022-10-15 17:01:49,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-10-15 17:01:49,928 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:49,928 INFO L195 NwaCegarLoop]: trace histogram [101, 100, 51, 50, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:49,979 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 17:01:50,145 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,SelfDestructingSolverStorable10 [2022-10-15 17:01:50,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:50,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1894071402, now seen corresponding path program 1 times [2022-10-15 17:01:50,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:50,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222435769] [2022-10-15 17:01:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:50,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15150 trivial. 0 not checked. [2022-10-15 17:01:50,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:50,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222435769] [2022-10-15 17:01:50,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222435769] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:01:50,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:01:50,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:01:50,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775167809] [2022-10-15 17:01:50,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:01:50,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:01:50,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:50,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:01:50,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:01:50,386 INFO L87 Difference]: Start difference. First operand 4191 states and 4292 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:50,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:50,411 INFO L93 Difference]: Finished difference Result 4190 states and 4291 transitions. [2022-10-15 17:01:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:01:50,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 309 [2022-10-15 17:01:50,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:50,429 INFO L225 Difference]: With dead ends: 4190 [2022-10-15 17:01:50,430 INFO L226 Difference]: Without dead ends: 4186 [2022-10-15 17:01:50,430 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 17:01:50,431 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 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 17:01:50,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:01:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4186 states. [2022-10-15 17:01:50,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4186 to 4186. [2022-10-15 17:01:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 4185 states have (on average 1.0241338112305853) internal successors, (4286), 4185 states have internal predecessors, (4286), 0 states have call successors, (0), 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 17:01:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 4286 transitions. [2022-10-15 17:01:50,510 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 4286 transitions. Word has length 309 [2022-10-15 17:01:50,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:50,511 INFO L495 AbstractCegarLoop]: Abstraction has 4186 states and 4286 transitions. [2022-10-15 17:01:50,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:50,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 4286 transitions. [2022-10-15 17:01:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-10-15 17:01:50,515 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:01:50,516 INFO L195 NwaCegarLoop]: trace histogram [102, 101, 52, 50, 1, 1, 1, 1, 1, 1] [2022-10-15 17:01:50,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-15 17:01:50,516 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:01:50,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:01:50,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2103022405, now seen corresponding path program 9 times [2022-10-15 17:01:50,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:01:50,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184931940] [2022-10-15 17:01:50,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:01:50,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:01:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:01:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7403 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-10-15 17:01:55,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:01:55,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184931940] [2022-10-15 17:01:55,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184931940] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:01:55,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636336724] [2022-10-15 17:01:55,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:01:55,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:01:55,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:01:55,230 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 17:01:55,244 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 17:01:55,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2022-10-15 17:01:55,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:01:55,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 103 conjunts are in the unsatisfiable core [2022-10-15 17:01:55,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:01:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7401 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-10-15 17:01:55,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:01:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7401 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-10-15 17:01:58,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636336724] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:01:58,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:01:58,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 55 [2022-10-15 17:01:58,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364870500] [2022-10-15 17:01:58,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:01:58,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-10-15 17:01:58,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:01:58,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-10-15 17:01:58,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2022-10-15 17:01:58,496 INFO L87 Difference]: Start difference. First operand 4186 states and 4286 transitions. Second operand has 55 states, 55 states have (on average 3.909090909090909) internal successors, (215), 55 states have internal predecessors, (215), 0 states have call successors, (0), 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 17:01:58,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:01:58,708 INFO L93 Difference]: Finished difference Result 305 states and 304 transitions. [2022-10-15 17:01:58,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-10-15 17:01:58,709 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.909090909090909) internal successors, (215), 55 states have internal predecessors, (215), 0 states have call successors, (0), 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 311 [2022-10-15 17:01:58,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:01:58,710 INFO L225 Difference]: With dead ends: 305 [2022-10-15 17:01:58,710 INFO L226 Difference]: Without dead ends: 0 [2022-10-15 17:01:58,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 569 SyntacticMatches, 102 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3338 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2022-10-15 17:01:58,711 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:01:58,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:01:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-15 17:01:58,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-15 17:01:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:01:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-15 17:01:58,713 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 311 [2022-10-15 17:01:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:01:58,713 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-15 17:01:58,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.909090909090909) internal successors, (215), 55 states have internal predecessors, (215), 0 states have call successors, (0), 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 17:01:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-15 17:01:58,714 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-15 17:01:58,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-10-15 17:01:58,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-10-15 17:01:58,757 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 17:01:58,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 17:01:58,936 INFO L444 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1] [2022-10-15 17:01:58,938 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 17:01:58,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 05:01:58 BoogieIcfgContainer [2022-10-15 17:01:58,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 17:01:58,943 INFO L158 Benchmark]: Toolchain (without parser) took 46730.53ms. Allocated memory was 156.2MB in the beginning and 563.1MB in the end (delta: 406.8MB). Free memory was 130.4MB in the beginning and 429.5MB in the end (delta: -299.1MB). Peak memory consumption was 108.4MB. Max. memory is 8.0GB. [2022-10-15 17:01:58,944 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 156.2MB. Free memory was 127.6MB in the beginning and 127.5MB in the end (delta: 80.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 17:01:58,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.26ms. Allocated memory is still 156.2MB. Free memory was 130.2MB in the beginning and 120.5MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-15 17:01:58,949 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.99ms. Allocated memory is still 156.2MB. Free memory was 120.5MB in the beginning and 119.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 17:01:58,950 INFO L158 Benchmark]: Boogie Preprocessor took 41.49ms. Allocated memory is still 156.2MB. Free memory was 118.9MB in the beginning and 118.0MB in the end (delta: 927.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 17:01:58,950 INFO L158 Benchmark]: RCFGBuilder took 429.68ms. Allocated memory is still 156.2MB. Free memory was 117.9MB in the beginning and 108.7MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-15 17:01:58,951 INFO L158 Benchmark]: TraceAbstraction took 45828.26ms. Allocated memory was 156.2MB in the beginning and 563.1MB in the end (delta: 406.8MB). Free memory was 108.0MB in the beginning and 429.5MB in the end (delta: -321.5MB). Peak memory consumption was 86.4MB. Max. memory is 8.0GB. [2022-10-15 17:01:58,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 156.2MB. Free memory was 127.6MB in the beginning and 127.5MB in the end (delta: 80.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 363.26ms. Allocated memory is still 156.2MB. Free memory was 130.2MB in the beginning and 120.5MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.99ms. Allocated memory is still 156.2MB. Free memory was 120.5MB in the beginning and 119.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.49ms. Allocated memory is still 156.2MB. Free memory was 118.9MB in the beginning and 118.0MB in the end (delta: 927.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 429.68ms. Allocated memory is still 156.2MB. Free memory was 117.9MB in the beginning and 108.7MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 45828.26ms. Allocated memory was 156.2MB in the beginning and 563.1MB in the end (delta: 406.8MB). Free memory was 108.0MB in the beginning and 429.5MB in the end (delta: -321.5MB). Peak memory consumption was 86.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 24]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 45.6s, OverallIterations: 13, TraceHistogramMax: 102, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.1s, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 552 SdHoareTripleChecker+Valid, 8.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 552 mSDsluCounter, 24621 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24031 mSDsCounter, 338 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18397 IncrementalHoareTripleChecker+Invalid, 18735 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 338 mSolverCounterUnsat, 590 mSDtfsCounter, 18397 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2717 GetRequests, 2098 SyntacticMatches, 140 SemanticMatches, 479 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20707 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4191occurred in iteration=11, InterpolantAutomatonStates: 402, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 1108 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 28.3s InterpolantComputationTime, 2695 NumberOfCodeBlocks, 2617 NumberOfCodeBlocksAsserted, 193 NumberOfCheckSat, 3846 ConstructedInterpolants, 0 QuantifiedInterpolants, 12095 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2750 ConjunctsInSsa, 437 ConjunctsInUnsatCore, 31 InterpolantComputations, 4 PerfectInterpolantSequences, 68112/140097 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-15 17:01:59,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...