/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/reducercommutativity/max20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 02:19:23,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 02:19:23,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 02:19:23,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 02:19:23,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 02:19:23,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 02:19:23,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 02:19:23,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 02:19:23,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 02:19:23,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 02:19:23,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 02:19:23,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 02:19:23,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 02:19:23,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 02:19:23,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 02:19:23,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 02:19:23,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 02:19:23,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 02:19:23,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 02:19:23,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 02:19:23,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 02:19:23,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 02:19:23,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 02:19:23,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 02:19:23,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 02:19:23,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 02:19:23,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 02:19:23,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 02:19:23,494 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 [2022-10-16 02:19:23,552 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 02:19:23,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 02:19:23,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 02:19:23,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 02:19:23,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 02:19:23,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 02:19:23,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 02:19:23,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 02:19:23,560 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 02:19:23,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 02:19:23,561 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 02:19:23,562 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 02:19:23,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 02:19:23,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 02:19:23,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 02:19:23,563 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 02:19:23,563 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 02:19:23,563 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 02:19:23,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 02:19:23,564 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 02:19:23,564 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 02:19:23,564 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 02:19:23,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 02:19:23,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 02:19:23,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 02:19:23,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 02:19:23,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 02:19:23,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 02:19:23,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 02:19:23,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 02:19:23,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 02:19:24,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 02:19:24,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 02:19:24,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 02:19:24,051 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 02:19:24,052 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 02:19:24,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/max20-2.i [2022-10-16 02:19:24,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4615572a/e2296f4f66ce44b09b5e22ded951df0c/FLAGa3e1d2607 [2022-10-16 02:19:24,739 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 02:19:24,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max20-2.i [2022-10-16 02:19:24,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4615572a/e2296f4f66ce44b09b5e22ded951df0c/FLAGa3e1d2607 [2022-10-16 02:19:25,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4615572a/e2296f4f66ce44b09b5e22ded951df0c [2022-10-16 02:19:25,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 02:19:25,137 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 02:19:25,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 02:19:25,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 02:19:25,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 02:19:25,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198b34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25, skipping insertion in model container [2022-10-16 02:19:25,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 02:19:25,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 02:19:25,436 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/reducercommutativity/max20-2.i[1180,1193] [2022-10-16 02:19:25,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 02:19:25,450 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 02:19:25,474 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/reducercommutativity/max20-2.i[1180,1193] [2022-10-16 02:19:25,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 02:19:25,495 INFO L208 MainTranslator]: Completed translation [2022-10-16 02:19:25,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25 WrapperNode [2022-10-16 02:19:25,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 02:19:25,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 02:19:25,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 02:19:25,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 02:19:25,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,542 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-10-16 02:19:25,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 02:19:25,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 02:19:25,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 02:19:25,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 02:19:25,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,573 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 02:19:25,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 02:19:25,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 02:19:25,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 02:19:25,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25" (1/1) ... [2022-10-16 02:19:25,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 02:19:25,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:19:25,635 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) [2022-10-16 02:19:25,658 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 [2022-10-16 02:19:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 02:19:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-10-16 02:19:25,721 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-10-16 02:19:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 02:19:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 02:19:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 02:19:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 02:19:25,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 02:19:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 02:19:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 02:19:25,831 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 02:19:25,833 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 02:19:26,254 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 02:19:26,262 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 02:19:26,263 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 02:19:26,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:19:26 BoogieIcfgContainer [2022-10-16 02:19:26,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 02:19:26,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 02:19:26,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 02:19:26,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 02:19:26,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:19:25" (1/3) ... [2022-10-16 02:19:26,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e63e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:19:26, skipping insertion in model container [2022-10-16 02:19:26,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:25" (2/3) ... [2022-10-16 02:19:26,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e63e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:19:26, skipping insertion in model container [2022-10-16 02:19:26,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:19:26" (3/3) ... [2022-10-16 02:19:26,276 INFO L112 eAbstractionObserver]: Analyzing ICFG max20-2.i [2022-10-16 02:19:26,299 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 02:19:26,300 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-10-16 02:19:26,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 02:19:26,375 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;@3427628d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 02:19:26,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-10-16 02:19:26,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 56 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:26,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 02:19:26,390 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:26,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 02:19:26,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:26,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:26,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1778701704, now seen corresponding path program 1 times [2022-10-16 02:19:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:26,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674137170] [2022-10-16 02:19:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:26,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:19:26,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:26,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674137170] [2022-10-16 02:19:26,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674137170] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:19:26,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 02:19:26,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 02:19:26,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086696427] [2022-10-16 02:19:26,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:19:26,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 02:19:26,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:26,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 02:19:26,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 02:19:26,772 INFO L87 Difference]: Start difference. First operand has 61 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 56 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:19:26,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:26,931 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2022-10-16 02:19:26,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 02:19:26,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 02:19:26,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:26,943 INFO L225 Difference]: With dead ends: 51 [2022-10-16 02:19:26,944 INFO L226 Difference]: Without dead ends: 49 [2022-10-16 02:19:26,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 02:19:26,950 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 55 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:26,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 68 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:19:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-10-16 02:19:26,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-10-16 02:19:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2022-10-16 02:19:27,000 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 6 [2022-10-16 02:19:27,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:27,001 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2022-10-16 02:19:27,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:19:27,002 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-10-16 02:19:27,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 02:19:27,002 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:27,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 02:19:27,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 02:19:27,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:27,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:27,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1778701705, now seen corresponding path program 1 times [2022-10-16 02:19:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:27,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419547392] [2022-10-16 02:19:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:27,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:19:27,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:27,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419547392] [2022-10-16 02:19:27,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419547392] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:19:27,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 02:19:27,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 02:19:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560549936] [2022-10-16 02:19:27,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:19:27,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 02:19:27,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:27,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 02:19:27,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 02:19:27,271 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:19:27,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:27,445 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2022-10-16 02:19:27,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 02:19:27,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 02:19:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:27,447 INFO L225 Difference]: With dead ends: 50 [2022-10-16 02:19:27,447 INFO L226 Difference]: Without dead ends: 50 [2022-10-16 02:19:27,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 02:19:27,453 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 50 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:27,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 68 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:19:27,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-16 02:19:27,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-10-16 02:19:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 42 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:27,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-10-16 02:19:27,475 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 6 [2022-10-16 02:19:27,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:27,476 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-10-16 02:19:27,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:19:27,476 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-10-16 02:19:27,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 02:19:27,477 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:27,477 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:19:27,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 02:19:27,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:27,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:27,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1740982222, now seen corresponding path program 1 times [2022-10-16 02:19:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:27,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650083016] [2022-10-16 02:19:27,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:27,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:19:27,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:27,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650083016] [2022-10-16 02:19:27,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650083016] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:19:27,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406882706] [2022-10-16 02:19:27,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:27,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:19:27,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:19:27,797 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) [2022-10-16 02:19:27,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 02:19:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:27,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 02:19:27,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:19:27,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 02:19:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:19:28,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:19:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:19:28,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406882706] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:19:28,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:19:28,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-10-16 02:19:28,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657477541] [2022-10-16 02:19:28,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:19:28,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 02:19:28,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:28,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 02:19:28,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-10-16 02:19:28,261 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 14 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:19:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:28,521 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2022-10-16 02:19:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 02:19:28,522 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-16 02:19:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:28,525 INFO L225 Difference]: With dead ends: 71 [2022-10-16 02:19:28,526 INFO L226 Difference]: Without dead ends: 71 [2022-10-16 02:19:28,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-10-16 02:19:28,528 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 109 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:28,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 153 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 02:19:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-16 02:19:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2022-10-16 02:19:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 60 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2022-10-16 02:19:28,543 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 11 [2022-10-16 02:19:28,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:28,544 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2022-10-16 02:19:28,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:19:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-10-16 02:19:28,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-16 02:19:28,546 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:28,546 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 02:19:28,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 02:19:28,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:19:28,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:28,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:28,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1540870345, now seen corresponding path program 2 times [2022-10-16 02:19:28,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:28,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093561463] [2022-10-16 02:19:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:28,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:19:29,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:29,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093561463] [2022-10-16 02:19:29,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093561463] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:19:29,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720242564] [2022-10-16 02:19:29,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 02:19:29,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:19:29,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:19:29,182 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) [2022-10-16 02:19:29,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 02:19:29,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 02:19:29,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:19:29,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-16 02:19:29,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:19:29,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 02:19:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:19:29,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 02:19:29,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720242564] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:19:29,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 02:19:29,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2022-10-16 02:19:29,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854842501] [2022-10-16 02:19:29,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:19:29,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 02:19:29,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:29,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 02:19:29,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-10-16 02:19:29,628 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:19:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:29,876 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2022-10-16 02:19:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 02:19:29,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-10-16 02:19:29,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:29,884 INFO L225 Difference]: With dead ends: 69 [2022-10-16 02:19:29,884 INFO L226 Difference]: Without dead ends: 69 [2022-10-16 02:19:29,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2022-10-16 02:19:29,891 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 60 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:29,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 132 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:19:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-16 02:19:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 49. [2022-10-16 02:19:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.170731707317073) internal successors, (48), 44 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:29,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-10-16 02:19:29,916 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 26 [2022-10-16 02:19:29,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:29,917 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-10-16 02:19:29,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:19:29,920 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-10-16 02:19:29,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 02:19:29,922 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:29,922 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:19:29,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 02:19:30,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-16 02:19:30,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:30,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:30,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1547846002, now seen corresponding path program 1 times [2022-10-16 02:19:30,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:30,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014641326] [2022-10-16 02:19:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:30,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:30,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:19:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:30,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-16 02:19:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-10-16 02:19:30,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:30,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014641326] [2022-10-16 02:19:30,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014641326] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:19:30,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 02:19:30,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 02:19:30,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199476693] [2022-10-16 02:19:30,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:19:30,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 02:19:30,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:30,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 02:19:30,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-16 02:19:30,363 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 02:19:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:30,419 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-10-16 02:19:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 02:19:30,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2022-10-16 02:19:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:30,422 INFO L225 Difference]: With dead ends: 54 [2022-10-16 02:19:30,422 INFO L226 Difference]: Without dead ends: 54 [2022-10-16 02:19:30,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-16 02:19:30,430 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 30 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:30,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 66 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 02:19:30,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-16 02:19:30,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2022-10-16 02:19:30,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 47 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-10-16 02:19:30,447 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 46 [2022-10-16 02:19:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:30,448 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-10-16 02:19:30,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 02:19:30,449 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-10-16 02:19:30,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-16 02:19:30,452 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:30,452 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:19:30,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 02:19:30,453 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:30,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:30,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1428184137, now seen corresponding path program 1 times [2022-10-16 02:19:30,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:30,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477739823] [2022-10-16 02:19:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:30,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:30,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:19:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-16 02:19:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 02:19:30,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:30,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477739823] [2022-10-16 02:19:30,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477739823] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:19:30,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781368535] [2022-10-16 02:19:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:30,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:19:30,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:19:30,639 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) [2022-10-16 02:19:30,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 02:19:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:30,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 02:19:30,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:19:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 02:19:30,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:19:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 02:19:30,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781368535] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:19:30,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:19:30,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-10-16 02:19:30,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102607080] [2022-10-16 02:19:30,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:19:30,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 02:19:30,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 02:19:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-16 02:19:30,821 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 02:19:30,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:30,862 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2022-10-16 02:19:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 02:19:30,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-10-16 02:19:30,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:30,864 INFO L225 Difference]: With dead ends: 80 [2022-10-16 02:19:30,864 INFO L226 Difference]: Without dead ends: 80 [2022-10-16 02:19:30,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-16 02:19:30,865 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 45 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:30,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 236 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 02:19:30,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-16 02:19:30,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-10-16 02:19:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 75 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2022-10-16 02:19:30,873 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 51 [2022-10-16 02:19:30,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:30,874 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2022-10-16 02:19:30,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 02:19:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2022-10-16 02:19:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-16 02:19:30,877 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:30,877 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:19:30,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 02:19:31,093 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 [2022-10-16 02:19:31,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:31,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:31,096 INFO L85 PathProgramCache]: Analyzing trace with hash -214289865, now seen corresponding path program 2 times [2022-10-16 02:19:31,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:31,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787562338] [2022-10-16 02:19:31,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:31,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:31,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:19:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-16 02:19:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2022-10-16 02:19:31,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:31,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787562338] [2022-10-16 02:19:31,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787562338] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:19:31,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472620555] [2022-10-16 02:19:31,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 02:19:31,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:19:31,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:19:31,495 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) [2022-10-16 02:19:31,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 02:19:31,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 02:19:31,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:19:31,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 02:19:31,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:19:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 194 proven. 81 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-10-16 02:19:31,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:19:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 277 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-10-16 02:19:31,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472620555] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:19:31,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:19:31,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 20 [2022-10-16 02:19:31,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577656252] [2022-10-16 02:19:31,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:19:31,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-16 02:19:31,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:31,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-16 02:19:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-10-16 02:19:31,899 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-16 02:19:32,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:32,114 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2022-10-16 02:19:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-16 02:19:32,115 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 91 [2022-10-16 02:19:32,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:32,117 INFO L225 Difference]: With dead ends: 137 [2022-10-16 02:19:32,117 INFO L226 Difference]: Without dead ends: 137 [2022-10-16 02:19:32,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-10-16 02:19:32,119 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 177 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:32,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 182 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 02:19:32,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-10-16 02:19:32,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-10-16 02:19:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 131 states have (on average 1.1297709923664123) internal successors, (148), 132 states have internal predecessors, (148), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 154 transitions. [2022-10-16 02:19:32,130 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 154 transitions. Word has length 91 [2022-10-16 02:19:32,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:32,130 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 154 transitions. [2022-10-16 02:19:32,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-16 02:19:32,131 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 154 transitions. [2022-10-16 02:19:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-10-16 02:19:32,139 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:32,139 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 42, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:19:32,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 02:19:32,353 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 [2022-10-16 02:19:32,353 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:32,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:32,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1637958616, now seen corresponding path program 1 times [2022-10-16 02:19:32,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:32,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479352836] [2022-10-16 02:19:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:32,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:32,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:19:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-16 02:19:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:33,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-10-16 02:19:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4453 backedges. 0 proven. 2493 refuted. 0 times theorem prover too weak. 1960 trivial. 0 not checked. [2022-10-16 02:19:33,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:33,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479352836] [2022-10-16 02:19:33,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479352836] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:19:33,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967839164] [2022-10-16 02:19:33,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:33,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:19:33,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:19:33,409 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) [2022-10-16 02:19:33,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 02:19:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:33,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 02:19:33,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:19:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4453 backedges. 2020 proven. 469 refuted. 0 times theorem prover too weak. 1964 trivial. 0 not checked. [2022-10-16 02:19:33,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:19:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4453 backedges. 0 proven. 2493 refuted. 0 times theorem prover too weak. 1960 trivial. 0 not checked. [2022-10-16 02:19:34,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967839164] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:19:34,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:19:34,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 22 [2022-10-16 02:19:34,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160903239] [2022-10-16 02:19:34,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:19:34,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-16 02:19:34,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:34,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-16 02:19:34,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-10-16 02:19:34,037 INFO L87 Difference]: Start difference. First operand 137 states and 154 transitions. Second operand has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 02:19:34,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:34,188 INFO L93 Difference]: Finished difference Result 179 states and 202 transitions. [2022-10-16 02:19:34,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-16 02:19:34,188 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 255 [2022-10-16 02:19:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:34,191 INFO L225 Difference]: With dead ends: 179 [2022-10-16 02:19:34,191 INFO L226 Difference]: Without dead ends: 179 [2022-10-16 02:19:34,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 501 SyntacticMatches, 10 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-10-16 02:19:34,192 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 197 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:34,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 313 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:19:34,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-10-16 02:19:34,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-10-16 02:19:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 173 states have (on average 1.1329479768786128) internal successors, (196), 174 states have internal predecessors, (196), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 202 transitions. [2022-10-16 02:19:34,205 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 202 transitions. Word has length 255 [2022-10-16 02:19:34,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:34,206 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 202 transitions. [2022-10-16 02:19:34,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 02:19:34,206 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 202 transitions. [2022-10-16 02:19:34,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-10-16 02:19:34,212 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:34,213 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 60, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:19:34,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-16 02:19:34,426 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 [2022-10-16 02:19:34,427 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:34,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:34,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1999680776, now seen corresponding path program 2 times [2022-10-16 02:19:34,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:34,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083260315] [2022-10-16 02:19:34,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:34,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:34,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:19:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-16 02:19:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:34,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-10-16 02:19:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9052 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9045 trivial. 0 not checked. [2022-10-16 02:19:34,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:34,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083260315] [2022-10-16 02:19:34,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083260315] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:19:34,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574155630] [2022-10-16 02:19:34,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 02:19:34,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:19:34,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:19:34,979 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) [2022-10-16 02:19:35,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 02:19:35,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 02:19:35,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:19:35,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 02:19:35,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:19:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9052 backedges. 4090 proven. 7 refuted. 0 times theorem prover too weak. 4955 trivial. 0 not checked. [2022-10-16 02:19:35,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:19:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9052 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9045 trivial. 0 not checked. [2022-10-16 02:19:35,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574155630] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:19:35,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:19:35,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-10-16 02:19:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137912182] [2022-10-16 02:19:35,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:19:35,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 02:19:35,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:35,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 02:19:35,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-16 02:19:35,363 INFO L87 Difference]: Start difference. First operand 179 states and 202 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 02:19:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:35,403 INFO L93 Difference]: Finished difference Result 199 states and 222 transitions. [2022-10-16 02:19:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 02:19:35,404 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 345 [2022-10-16 02:19:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:35,407 INFO L225 Difference]: With dead ends: 199 [2022-10-16 02:19:35,407 INFO L226 Difference]: Without dead ends: 199 [2022-10-16 02:19:35,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-16 02:19:35,408 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 36 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:35,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 114 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 02:19:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-10-16 02:19:35,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-10-16 02:19:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 193 states have (on average 1.1191709844559585) internal successors, (216), 194 states have internal predecessors, (216), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 222 transitions. [2022-10-16 02:19:35,418 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 222 transitions. Word has length 345 [2022-10-16 02:19:35,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:35,419 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 222 transitions. [2022-10-16 02:19:35,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 02:19:35,419 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 222 transitions. [2022-10-16 02:19:35,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-10-16 02:19:35,426 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:35,426 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 60, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:19:35,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-16 02:19:35,642 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 [2022-10-16 02:19:35,642 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:35,644 INFO L85 PathProgramCache]: Analyzing trace with hash -261012296, now seen corresponding path program 3 times [2022-10-16 02:19:35,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:35,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358028112] [2022-10-16 02:19:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:35,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:19:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:36,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-16 02:19:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:36,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-10-16 02:19:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:36,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9126 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 9045 trivial. 0 not checked. [2022-10-16 02:19:36,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:36,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358028112] [2022-10-16 02:19:36,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358028112] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:19:36,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868788920] [2022-10-16 02:19:36,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 02:19:36,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:19:36,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:19:36,387 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) [2022-10-16 02:19:36,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 02:19:36,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-10-16 02:19:36,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:19:36,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 02:19:36,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:19:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9126 backedges. 4090 proven. 81 refuted. 0 times theorem prover too weak. 4955 trivial. 0 not checked. [2022-10-16 02:19:36,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:19:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9126 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 9045 trivial. 0 not checked. [2022-10-16 02:19:36,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868788920] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:19:36,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:19:36,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-10-16 02:19:36,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486337699] [2022-10-16 02:19:36,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:19:36,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 02:19:36,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 02:19:36,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-16 02:19:36,844 INFO L87 Difference]: Start difference. First operand 199 states and 222 transitions. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 02:19:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:36,926 INFO L93 Difference]: Finished difference Result 239 states and 262 transitions. [2022-10-16 02:19:36,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 02:19:36,927 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 365 [2022-10-16 02:19:36,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:36,929 INFO L225 Difference]: With dead ends: 239 [2022-10-16 02:19:36,929 INFO L226 Difference]: Without dead ends: 239 [2022-10-16 02:19:36,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-16 02:19:36,931 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 84 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:36,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 88 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:19:36,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-10-16 02:19:36,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-10-16 02:19:36,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 233 states have (on average 1.0987124463519313) internal successors, (256), 234 states have internal predecessors, (256), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 262 transitions. [2022-10-16 02:19:36,942 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 262 transitions. Word has length 365 [2022-10-16 02:19:36,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:36,944 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 262 transitions. [2022-10-16 02:19:36,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 02:19:36,944 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 262 transitions. [2022-10-16 02:19:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-10-16 02:19:36,952 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:36,952 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 60, 14, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:19:36,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 02:19:37,167 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 [2022-10-16 02:19:37,167 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:37,168 INFO L85 PathProgramCache]: Analyzing trace with hash 732567608, now seen corresponding path program 4 times [2022-10-16 02:19:37,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:37,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247008533] [2022-10-16 02:19:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:37,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:38,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:19:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-16 02:19:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-10-16 02:19:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9514 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 9045 trivial. 0 not checked. [2022-10-16 02:19:38,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:38,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247008533] [2022-10-16 02:19:38,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247008533] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:19:38,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517800770] [2022-10-16 02:19:38,313 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 02:19:38,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:19:38,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:19:38,314 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) [2022-10-16 02:19:38,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 02:19:38,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 02:19:38,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:19:38,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 02:19:38,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:19:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9514 backedges. 4090 proven. 469 refuted. 0 times theorem prover too weak. 4955 trivial. 0 not checked. [2022-10-16 02:19:39,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:19:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9514 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 9045 trivial. 0 not checked. [2022-10-16 02:19:39,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517800770] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:19:39,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:19:39,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 22 [2022-10-16 02:19:39,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968345007] [2022-10-16 02:19:39,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:19:39,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-16 02:19:39,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:39,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-16 02:19:39,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-10-16 02:19:39,384 INFO L87 Difference]: Start difference. First operand 239 states and 262 transitions. Second operand has 22 states, 22 states have (on average 6.045454545454546) internal successors, (133), 22 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 02:19:39,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:39,494 INFO L93 Difference]: Finished difference Result 264 states and 287 transitions. [2022-10-16 02:19:39,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-16 02:19:39,495 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.045454545454546) internal successors, (133), 22 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 405 [2022-10-16 02:19:39,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:39,498 INFO L225 Difference]: With dead ends: 264 [2022-10-16 02:19:39,498 INFO L226 Difference]: Without dead ends: 264 [2022-10-16 02:19:39,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 800 SyntacticMatches, 11 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-10-16 02:19:39,499 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 76 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:39,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 128 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:19:39,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-10-16 02:19:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-10-16 02:19:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 258 states have (on average 1.0891472868217054) internal successors, (281), 259 states have internal predecessors, (281), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:39,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 287 transitions. [2022-10-16 02:19:39,508 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 287 transitions. Word has length 405 [2022-10-16 02:19:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:39,509 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 287 transitions. [2022-10-16 02:19:39,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.045454545454546) internal successors, (133), 22 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 02:19:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 287 transitions. [2022-10-16 02:19:39,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-10-16 02:19:39,519 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:39,519 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 60, 19, 19, 19, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:19:39,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 02:19:39,733 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 [2022-10-16 02:19:39,734 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:39,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:39,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1247099501, now seen corresponding path program 5 times [2022-10-16 02:19:39,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:39,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331915893] [2022-10-16 02:19:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:39,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:46,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:19:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:47,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-16 02:19:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:48,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-10-16 02:19:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9919 trivial. 0 not checked. [2022-10-16 02:19:49,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:49,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331915893] [2022-10-16 02:19:49,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331915893] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:19:49,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 02:19:49,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-16 02:19:49,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981546368] [2022-10-16 02:19:49,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:19:49,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 02:19:49,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:49,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 02:19:49,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-10-16 02:19:49,474 INFO L87 Difference]: Start difference. First operand 264 states and 287 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:49,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:49,590 INFO L93 Difference]: Finished difference Result 645 states and 697 transitions. [2022-10-16 02:19:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 02:19:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 430 [2022-10-16 02:19:49,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:49,595 INFO L225 Difference]: With dead ends: 645 [2022-10-16 02:19:49,595 INFO L226 Difference]: Without dead ends: 645 [2022-10-16 02:19:49,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-10-16 02:19:49,596 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 40 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:49,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 349 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:19:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-10-16 02:19:49,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 476. [2022-10-16 02:19:49,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 467 states have (on average 1.094218415417559) internal successors, (511), 468 states have internal predecessors, (511), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-16 02:19:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 526 transitions. [2022-10-16 02:19:49,617 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 526 transitions. Word has length 430 [2022-10-16 02:19:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:49,618 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 526 transitions. [2022-10-16 02:19:49,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:19:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 526 transitions. [2022-10-16 02:19:49,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-10-16 02:19:49,630 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:49,631 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 60, 19, 19, 19, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:19:49,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-16 02:19:49,633 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:49,633 INFO L85 PathProgramCache]: Analyzing trace with hash -5374778, now seen corresponding path program 1 times [2022-10-16 02:19:49,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:49,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994969447] [2022-10-16 02:19:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:49,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:19:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:50,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-16 02:19:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:50,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-10-16 02:19:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:50,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9919 trivial. 0 not checked. [2022-10-16 02:19:50,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:50,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994969447] [2022-10-16 02:19:50,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994969447] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:19:50,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 02:19:50,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 02:19:50,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557580214] [2022-10-16 02:19:50,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:19:50,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 02:19:50,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:19:50,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 02:19:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 02:19:50,484 INFO L87 Difference]: Start difference. First operand 476 states and 526 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 02:19:50,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:19:50,517 INFO L93 Difference]: Finished difference Result 475 states and 525 transitions. [2022-10-16 02:19:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 02:19:50,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 431 [2022-10-16 02:19:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:19:50,522 INFO L225 Difference]: With dead ends: 475 [2022-10-16 02:19:50,522 INFO L226 Difference]: Without dead ends: 471 [2022-10-16 02:19:50,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 02:19:50,524 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 02:19:50,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 66 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 02:19:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-10-16 02:19:50,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2022-10-16 02:19:50,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 463 states have (on average 1.0928725701943844) internal successors, (506), 464 states have internal predecessors, (506), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-10-16 02:19:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 520 transitions. [2022-10-16 02:19:50,544 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 520 transitions. Word has length 431 [2022-10-16 02:19:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:19:50,545 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 520 transitions. [2022-10-16 02:19:50,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 02:19:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 520 transitions. [2022-10-16 02:19:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-10-16 02:19:50,556 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:19:50,556 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 59, 19, 19, 19, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:19:50,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-16 02:19:50,557 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:19:50,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:19:50,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1708301014, now seen corresponding path program 1 times [2022-10-16 02:19:50,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:19:50,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815717009] [2022-10-16 02:19:50,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:50,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:19:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:55,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:19:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:56,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-16 02:19:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-10-16 02:19:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:19:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 9919 backedges. 2044 proven. 5314 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2022-10-16 02:19:59,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:19:59,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815717009] [2022-10-16 02:19:59,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815717009] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:19:59,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288070492] [2022-10-16 02:19:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:19:59,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:19:59,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:19:59,905 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) [2022-10-16 02:19:59,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 02:20:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:20:00,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 110 conjunts are in the unsatisfiable core [2022-10-16 02:20:00,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:20:00,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 02:20:00,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 02:20:00,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 02:20:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9919 backedges. 4090 proven. 3072 refuted. 0 times theorem prover too weak. 2757 trivial. 0 not checked. [2022-10-16 02:20:07,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:20:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9919 backedges. 4204 proven. 2956 refuted. 0 times theorem prover too weak. 2759 trivial. 0 not checked. [2022-10-16 02:20:15,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288070492] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:20:15,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:20:15,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 52, 50] total 150 [2022-10-16 02:20:15,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338795664] [2022-10-16 02:20:15,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:20:15,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2022-10-16 02:20:15,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:20:15,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2022-10-16 02:20:15,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=21748, Unknown=0, NotChecked=0, Total=22350 [2022-10-16 02:20:15,819 INFO L87 Difference]: Start difference. First operand 471 states and 520 transitions. Second operand has 150 states, 148 states have (on average 2.75) internal successors, (407), 149 states have internal predecessors, (407), 5 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-10-16 02:20:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:20:38,339 INFO L93 Difference]: Finished difference Result 1280 states and 1426 transitions. [2022-10-16 02:20:38,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-10-16 02:20:38,340 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 148 states have (on average 2.75) internal successors, (407), 149 states have internal predecessors, (407), 5 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 432 [2022-10-16 02:20:38,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:20:38,355 INFO L225 Difference]: With dead ends: 1280 [2022-10-16 02:20:38,355 INFO L226 Difference]: Without dead ends: 1266 [2022-10-16 02:20:38,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1138 GetRequests, 863 SyntacticMatches, 11 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18946 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=2595, Invalid=67895, Unknown=0, NotChecked=0, Total=70490 [2022-10-16 02:20:38,382 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 977 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 9143 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 17967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 9143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8683 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-10-16 02:20:38,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 3233 Invalid, 17967 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [141 Valid, 9143 Invalid, 0 Unknown, 8683 Unchecked, 5.5s Time] [2022-10-16 02:20:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-10-16 02:20:38,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1097. [2022-10-16 02:20:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1083 states have (on average 1.1144967682363804) internal successors, (1207), 1086 states have internal predecessors, (1207), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2022-10-16 02:20:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1246 transitions. [2022-10-16 02:20:38,430 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1246 transitions. Word has length 432 [2022-10-16 02:20:38,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:20:38,431 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 1246 transitions. [2022-10-16 02:20:38,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 148 states have (on average 2.75) internal successors, (407), 149 states have internal predecessors, (407), 5 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-10-16 02:20:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1246 transitions. [2022-10-16 02:20:38,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-10-16 02:20:38,448 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:20:38,448 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 59, 19, 19, 19, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:20:38,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 02:20:38,662 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,SelfDestructingSolverStorable13 [2022-10-16 02:20:38,663 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:20:38,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:20:38,664 INFO L85 PathProgramCache]: Analyzing trace with hash -862907920, now seen corresponding path program 2 times [2022-10-16 02:20:38,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:20:38,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290825609] [2022-10-16 02:20:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:20:38,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:20:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:20:51,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:20:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:20:55,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-16 02:20:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:20:55,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-10-16 02:20:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:21:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9919 backedges. 2044 proven. 6902 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2022-10-16 02:21:01,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:21:01,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290825609] [2022-10-16 02:21:01,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290825609] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:21:01,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949940465] [2022-10-16 02:21:01,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 02:21:01,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:21:01,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:21:01,368 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 02:21:01,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 02:21:03,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 02:21:03,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:21:03,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 255 conjunts are in the unsatisfiable core [2022-10-16 02:21:03,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:21:03,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 02:21:05,199 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:05,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:05,439 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:05,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:05,690 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:05,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:05,908 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:05,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:06,144 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:06,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:06,363 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:06,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:06,633 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:06,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:06,872 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:06,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:07,082 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:07,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:07,319 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:07,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:07,544 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:07,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:07,776 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:07,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:08,037 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:08,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:08,262 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:08,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:08,519 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:08,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:08,760 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:08,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:09,000 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:09,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:09,237 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:21:09,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 02:21:09,761 INFO L356 Elim1Store]: treesize reduction 35, result has 23.9 percent of original size [2022-10-16 02:21:09,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2022-10-16 02:21:10,051 INFO L356 Elim1Store]: treesize reduction 53, result has 5.4 percent of original size [2022-10-16 02:21:10,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 28 [2022-10-16 02:21:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9919 backedges. 4090 proven. 4855 refuted. 0 times theorem prover too weak. 974 trivial. 0 not checked. [2022-10-16 02:21:53,847 INFO L328 TraceCheckSpWp]: Computing backward predicates...