/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/termination-recursive-malloc/rec_malloc_ex4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 18:00:25,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 18:00:25,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 18:00:25,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 18:00:25,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 18:00:25,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 18:00:25,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 18:00:25,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 18:00:25,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 18:00:25,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 18:00:25,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 18:00:25,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 18:00:25,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 18:00:25,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 18:00:25,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 18:00:25,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 18:00:25,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 18:00:25,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 18:00:25,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 18:00:25,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 18:00:25,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 18:00:25,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 18:00:25,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 18:00:25,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 18:00:25,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 18:00:25,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 18:00:25,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 18:00:25,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 18:00:25,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 18:00:25,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 18:00:25,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 18:00:25,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 18:00:25,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 18:00:25,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 18:00:25,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 18:00:25,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 18:00:25,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 18:00:25,545 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 18:00:25,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 18:00:25,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 18:00:25,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 18:00:25,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 18:00:25,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 18:00:25,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 18:00:25,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 18:00:25,549 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 18:00:25,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 18:00:25,550 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 18:00:25,550 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 18:00:25,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 18:00:25,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 18:00:25,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 18:00:25,551 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 18:00:25,551 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 18:00:25,552 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 18:00:25,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 18:00:25,552 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 18:00:25,552 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 18:00:25,553 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 18:00:25,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 18:00:25,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 18:00:25,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 18:00:25,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:00:25,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 18:00:25,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 18:00:25,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 18:00:25,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 18:00:25,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 18:00:25,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 18:00:25,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 18:00:25,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 18:00:25,960 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 18:00:25,961 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 18:00:25,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex4.i [2022-10-15 18:00:26,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af884f80/970bd8020a8e4fbb87bd79faa245c0b0/FLAG103f4d789 [2022-10-15 18:00:26,697 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 18:00:26,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex4.i [2022-10-15 18:00:26,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af884f80/970bd8020a8e4fbb87bd79faa245c0b0/FLAG103f4d789 [2022-10-15 18:00:27,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af884f80/970bd8020a8e4fbb87bd79faa245c0b0 [2022-10-15 18:00:27,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 18:00:27,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 18:00:27,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 18:00:27,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 18:00:27,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 18:00:27,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c2704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27, skipping insertion in model container [2022-10-15 18:00:27,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 18:00:27,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 18:00:27,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:00:27,267 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 18:00:27,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:00:27,302 INFO L208 MainTranslator]: Completed translation [2022-10-15 18:00:27,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27 WrapperNode [2022-10-15 18:00:27,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 18:00:27,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 18:00:27,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 18:00:27,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 18:00:27,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,346 INFO L138 Inliner]: procedures = 12, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-10-15 18:00:27,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 18:00:27,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 18:00:27,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 18:00:27,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 18:00:27,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,372 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 18:00:27,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 18:00:27,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 18:00:27,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 18:00:27,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27" (1/1) ... [2022-10-15 18:00:27,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:00:27,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:00:27,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 18:00:27,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 18:00:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 18:00:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 18:00:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-10-15 18:00:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-10-15 18:00:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-10-15 18:00:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2022-10-15 18:00:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 18:00:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 18:00:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 18:00:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 18:00:27,601 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 18:00:27,604 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 18:00:28,028 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 18:00:28,053 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 18:00:28,054 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 18:00:28,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:00:28 BoogieIcfgContainer [2022-10-15 18:00:28,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 18:00:28,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 18:00:28,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 18:00:28,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 18:00:28,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:00:27" (1/3) ... [2022-10-15 18:00:28,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1f5d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:00:28, skipping insertion in model container [2022-10-15 18:00:28,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:00:27" (2/3) ... [2022-10-15 18:00:28,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1f5d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:00:28, skipping insertion in model container [2022-10-15 18:00:28,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:00:28" (3/3) ... [2022-10-15 18:00:28,087 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_malloc_ex4.i [2022-10-15 18:00:28,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 18:00:28,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-10-15 18:00:28,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 18:00:28,290 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;@a069613, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 18:00:28,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-10-15 18:00:28,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 54 states have internal predecessors, (54), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 18:00:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 18:00:28,306 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:28,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 18:00:28,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 18:00:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash 76528, now seen corresponding path program 1 times [2022-10-15 18:00:28,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:28,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213995562] [2022-10-15 18:00:28,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:28,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:28,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:28,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213995562] [2022-10-15 18:00:28,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213995562] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:28,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:28,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:00:28,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600889337] [2022-10-15 18:00:28,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:28,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:00:28,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:28,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:00:28,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:28,731 INFO L87 Difference]: Start difference. First operand has 58 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 54 states have internal predecessors, (54), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:28,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:28,819 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2022-10-15 18:00:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:00:28,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-10-15 18:00:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:28,833 INFO L225 Difference]: With dead ends: 57 [2022-10-15 18:00:28,833 INFO L226 Difference]: Without dead ends: 55 [2022-10-15 18:00:28,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:28,841 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:28,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 82 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:28,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-15 18:00:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-10-15 18:00:28,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 51 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 18:00:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2022-10-15 18:00:28,893 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 3 [2022-10-15 18:00:28,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:28,893 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2022-10-15 18:00:28,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:28,894 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2022-10-15 18:00:28,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-15 18:00:28,894 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:28,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-15 18:00:28,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 18:00:28,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 18:00:28,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash 76529, now seen corresponding path program 1 times [2022-10-15 18:00:28,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:28,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193134640] [2022-10-15 18:00:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:28,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:29,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:29,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193134640] [2022-10-15 18:00:29,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193134640] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:29,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:29,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:00:29,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547615761] [2022-10-15 18:00:29,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:29,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:00:29,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:00:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:29,135 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:29,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:29,187 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2022-10-15 18:00:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:00:29,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-10-15 18:00:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:29,189 INFO L225 Difference]: With dead ends: 54 [2022-10-15 18:00:29,189 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 18:00:29,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:29,192 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:29,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 83 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:00:29,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 18:00:29,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-10-15 18:00:29,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 50 states have internal predecessors, (50), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 18:00:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2022-10-15 18:00:29,202 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 3 [2022-10-15 18:00:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:29,202 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2022-10-15 18:00:29,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:29,203 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2022-10-15 18:00:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 18:00:29,204 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:29,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 18:00:29,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 18:00:29,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 18:00:29,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:29,205 INFO L85 PathProgramCache]: Analyzing trace with hash 73544145, now seen corresponding path program 1 times [2022-10-15 18:00:29,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:29,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5146201] [2022-10-15 18:00:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:29,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:29,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:29,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5146201] [2022-10-15 18:00:29,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5146201] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:29,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:29,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:00:29,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144651079] [2022-10-15 18:00:29,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:29,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:00:29,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:29,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:00:29,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:29,310 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:29,401 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2022-10-15 18:00:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:00:29,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 18:00:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:29,406 INFO L225 Difference]: With dead ends: 53 [2022-10-15 18:00:29,406 INFO L226 Difference]: Without dead ends: 53 [2022-10-15 18:00:29,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:29,411 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:29,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 78 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:29,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-10-15 18:00:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-10-15 18:00:29,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 49 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 18:00:29,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2022-10-15 18:00:29,421 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 5 [2022-10-15 18:00:29,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:29,422 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2022-10-15 18:00:29,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:29,422 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2022-10-15 18:00:29,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 18:00:29,423 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:29,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 18:00:29,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 18:00:29,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 18:00:29,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:29,424 INFO L85 PathProgramCache]: Analyzing trace with hash 73544146, now seen corresponding path program 1 times [2022-10-15 18:00:29,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:29,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471532939] [2022-10-15 18:00:29,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:29,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:29,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:29,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471532939] [2022-10-15 18:00:29,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471532939] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:29,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:29,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:00:29,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773057195] [2022-10-15 18:00:29,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:29,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:00:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:00:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:29,560 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:29,631 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2022-10-15 18:00:29,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:00:29,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 18:00:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:29,636 INFO L225 Difference]: With dead ends: 52 [2022-10-15 18:00:29,636 INFO L226 Difference]: Without dead ends: 52 [2022-10-15 18:00:29,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:29,646 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:29,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 82 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:29,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-15 18:00:29,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-10-15 18:00:29,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 48 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 18:00:29,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2022-10-15 18:00:29,670 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 5 [2022-10-15 18:00:29,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:29,670 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2022-10-15 18:00:29,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:00:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2022-10-15 18:00:29,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 18:00:29,671 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:29,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:29,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 18:00:29,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 18:00:29,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:29,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1049645444, now seen corresponding path program 1 times [2022-10-15 18:00:29,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:29,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959336404] [2022-10-15 18:00:29,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:29,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:29,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:29,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959336404] [2022-10-15 18:00:29,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959336404] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:29,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:29,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 18:00:29,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063666277] [2022-10-15 18:00:29,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:29,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 18:00:29,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:29,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 18:00:29,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 18:00:29,827 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-10-15 18:00:29,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:29,959 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2022-10-15 18:00:29,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 18:00:29,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2022-10-15 18:00:29,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:29,964 INFO L225 Difference]: With dead ends: 74 [2022-10-15 18:00:29,964 INFO L226 Difference]: Without dead ends: 74 [2022-10-15 18:00:29,965 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 [2022-10-15 18:00:29,966 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 51 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:29,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 94 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:29,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-10-15 18:00:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2022-10-15 18:00:29,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 33 states have (on average 1.696969696969697) internal successors, (56), 52 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 18:00:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2022-10-15 18:00:29,979 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 9 [2022-10-15 18:00:29,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:29,979 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2022-10-15 18:00:29,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-10-15 18:00:29,980 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2022-10-15 18:00:29,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 18:00:29,981 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:29,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:29,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 18:00:29,981 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 18:00:29,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1049645443, now seen corresponding path program 1 times [2022-10-15 18:00:29,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:29,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214476528] [2022-10-15 18:00:29,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:29,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:30,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:30,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214476528] [2022-10-15 18:00:30,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214476528] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:30,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:30,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 18:00:30,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89057389] [2022-10-15 18:00:30,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:30,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 18:00:30,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:30,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 18:00:30,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 18:00:30,132 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-10-15 18:00:30,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:30,271 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2022-10-15 18:00:30,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 18:00:30,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 9 [2022-10-15 18:00:30,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:30,273 INFO L225 Difference]: With dead ends: 72 [2022-10-15 18:00:30,274 INFO L226 Difference]: Without dead ends: 72 [2022-10-15 18:00:30,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 18:00:30,275 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 37 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:30,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 143 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-10-15 18:00:30,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2022-10-15 18:00:30,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 56 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 18:00:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2022-10-15 18:00:30,285 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 9 [2022-10-15 18:00:30,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:30,285 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2022-10-15 18:00:30,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-10-15 18:00:30,286 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2022-10-15 18:00:30,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 18:00:30,287 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:30,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:30,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 18:00:30,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 18:00:30,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:30,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1820729578, now seen corresponding path program 1 times [2022-10-15 18:00:30,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:30,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626928135] [2022-10-15 18:00:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:30,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:30,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:30,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626928135] [2022-10-15 18:00:30,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626928135] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:30,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:30,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 18:00:30,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931196782] [2022-10-15 18:00:30,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:30,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 18:00:30,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:30,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 18:00:30,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 18:00:30,414 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-10-15 18:00:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:30,515 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2022-10-15 18:00:30,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 18:00:30,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10 [2022-10-15 18:00:30,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:30,517 INFO L225 Difference]: With dead ends: 70 [2022-10-15 18:00:30,517 INFO L226 Difference]: Without dead ends: 70 [2022-10-15 18:00:30,518 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 [2022-10-15 18:00:30,519 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 41 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:30,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 104 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-10-15 18:00:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2022-10-15 18:00:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 56 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 18:00:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2022-10-15 18:00:30,527 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 10 [2022-10-15 18:00:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:30,528 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2022-10-15 18:00:30,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-10-15 18:00:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2022-10-15 18:00:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 18:00:30,529 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:30,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:30,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 18:00:30,529 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 18:00:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1820729579, now seen corresponding path program 1 times [2022-10-15 18:00:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:30,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237947630] [2022-10-15 18:00:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:30,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:30,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:30,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237947630] [2022-10-15 18:00:30,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237947630] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:30,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:30,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 18:00:30,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830852890] [2022-10-15 18:00:30,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:30,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 18:00:30,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:30,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 18:00:30,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 18:00:30,659 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-10-15 18:00:30,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:30,747 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2022-10-15 18:00:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 18:00:30,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10 [2022-10-15 18:00:30,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:30,750 INFO L225 Difference]: With dead ends: 70 [2022-10-15 18:00:30,750 INFO L226 Difference]: Without dead ends: 70 [2022-10-15 18:00:30,750 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 [2022-10-15 18:00:30,751 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 27 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:30,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 124 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:00:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-10-15 18:00:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2022-10-15 18:00:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 56 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 18:00:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2022-10-15 18:00:30,758 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 10 [2022-10-15 18:00:30,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:30,759 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2022-10-15 18:00:30,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-10-15 18:00:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2022-10-15 18:00:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 18:00:30,760 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:30,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:30,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 18:00:30,761 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 18:00:30,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:30,761 INFO L85 PathProgramCache]: Analyzing trace with hash 212857190, now seen corresponding path program 1 times [2022-10-15 18:00:30,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:30,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546634956] [2022-10-15 18:00:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:30,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:30,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:30,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546634956] [2022-10-15 18:00:30,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546634956] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:30,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:30,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:00:30,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569805362] [2022-10-15 18:00:30,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:30,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:00:30,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:00:30,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:30,840 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-10-15 18:00:30,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:30,870 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2022-10-15 18:00:30,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:00:30,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 13 [2022-10-15 18:00:30,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:30,872 INFO L225 Difference]: With dead ends: 61 [2022-10-15 18:00:30,872 INFO L226 Difference]: Without dead ends: 61 [2022-10-15 18:00:30,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:30,873 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 9 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:30,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 70 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:00:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-10-15 18:00:30,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-10-15 18:00:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 55 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 18:00:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2022-10-15 18:00:30,880 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 13 [2022-10-15 18:00:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:30,880 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2022-10-15 18:00:30,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-10-15 18:00:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2022-10-15 18:00:30,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 18:00:30,881 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:30,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:30,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 18:00:30,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 18:00:30,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:30,883 INFO L85 PathProgramCache]: Analyzing trace with hash 212857189, now seen corresponding path program 1 times [2022-10-15 18:00:30,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:30,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577173975] [2022-10-15 18:00:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:30,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:00:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:00:30,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:00:30,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577173975] [2022-10-15 18:00:30,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577173975] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:00:30,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:00:30,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:00:30,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56835975] [2022-10-15 18:00:30,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:00:30,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:00:30,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:00:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:00:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:30,946 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-10-15 18:00:30,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:00:30,971 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-10-15 18:00:30,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:00:30,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 13 [2022-10-15 18:00:30,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:00:30,973 INFO L225 Difference]: With dead ends: 60 [2022-10-15 18:00:30,973 INFO L226 Difference]: Without dead ends: 60 [2022-10-15 18:00:30,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:00:30,974 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 7 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:00:30,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 69 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:00:30,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-10-15 18:00:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-10-15 18:00:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 54 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 18:00:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2022-10-15 18:00:30,987 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 13 [2022-10-15 18:00:30,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:00:30,987 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2022-10-15 18:00:30,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-10-15 18:00:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2022-10-15 18:00:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 18:00:30,988 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:00:30,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:30,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 18:00:30,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 18:00:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:00:30,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1991376367, now seen corresponding path program 1 times [2022-10-15 18:00:30,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:00:30,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80549727] [2022-10-15 18:00:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:00:30,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:00:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 18:00:31,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-15 18:00:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 18:00:31,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-15 18:00:31,072 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-15 18:00:31,074 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (23 of 24 remaining) [2022-10-15 18:00:31,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 24 remaining) [2022-10-15 18:00:31,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2022-10-15 18:00:31,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2022-10-15 18:00:31,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2022-10-15 18:00:31,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2022-10-15 18:00:31,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2022-10-15 18:00:31,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2022-10-15 18:00:31,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2022-10-15 18:00:31,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr8ASSERT_VIOLATIONMEMORY_FREE (14 of 24 remaining) [2022-10-15 18:00:31,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr9ASSERT_VIOLATIONMEMORY_FREE (13 of 24 remaining) [2022-10-15 18:00:31,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr10ASSERT_VIOLATIONMEMORY_FREE (12 of 24 remaining) [2022-10-15 18:00:31,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2022-10-15 18:00:31,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2022-10-15 18:00:31,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2022-10-15 18:00:31,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2022-10-15 18:00:31,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2022-10-15 18:00:31,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 24 remaining) [2022-10-15 18:00:31,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 24 remaining) [2022-10-15 18:00:31,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 24 remaining) [2022-10-15 18:00:31,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 24 remaining) [2022-10-15 18:00:31,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 24 remaining) [2022-10-15 18:00:31,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 24 remaining) [2022-10-15 18:00:31,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 24 remaining) [2022-10-15 18:00:31,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-15 18:00:31,087 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:00:31,092 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 18:00:31,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:00:31 BoogieIcfgContainer [2022-10-15 18:00:31,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 18:00:31,123 INFO L158 Benchmark]: Toolchain (without parser) took 4069.80ms. Allocated memory was 157.3MB in the beginning and 197.1MB in the end (delta: 39.8MB). Free memory was 131.9MB in the beginning and 91.8MB in the end (delta: 40.1MB). Peak memory consumption was 81.3MB. Max. memory is 8.0GB. [2022-10-15 18:00:31,124 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 157.3MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 18:00:31,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.53ms. Allocated memory is still 157.3MB. Free memory was 131.7MB in the beginning and 122.5MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-15 18:00:31,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.56ms. Allocated memory is still 157.3MB. Free memory was 122.3MB in the beginning and 121.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 18:00:31,125 INFO L158 Benchmark]: Boogie Preprocessor took 28.74ms. Allocated memory is still 157.3MB. Free memory was 121.0MB in the beginning and 119.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 18:00:31,125 INFO L158 Benchmark]: RCFGBuilder took 683.64ms. Allocated memory is still 157.3MB. Free memory was 119.8MB in the beginning and 105.5MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-10-15 18:00:31,126 INFO L158 Benchmark]: TraceAbstraction took 3054.23ms. Allocated memory was 157.3MB in the beginning and 197.1MB in the end (delta: 39.8MB). Free memory was 104.9MB in the beginning and 91.8MB in the end (delta: 13.1MB). Peak memory consumption was 54.1MB. Max. memory is 8.0GB. [2022-10-15 18:00:31,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 157.3MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 242.53ms. Allocated memory is still 157.3MB. Free memory was 131.7MB in the beginning and 122.5MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.56ms. Allocated memory is still 157.3MB. Free memory was 122.3MB in the beginning and 121.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.74ms. Allocated memory is still 157.3MB. Free memory was 121.0MB in the beginning and 119.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 683.64ms. Allocated memory is still 157.3MB. Free memory was 119.8MB in the beginning and 105.5MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3054.23ms. Allocated memory was 157.3MB in the beginning and 197.1MB in the end (delta: 39.8MB). Free memory was 104.9MB in the beginning and 91.8MB in the end (delta: 13.1MB). Peak memory consumption was 54.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 42. Possible FailurePath: [L44] int *p1 = malloc(sizeof(int)); [L45] int *p2 = malloc(sizeof(int)); [L47] *p1 = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-1, p1={-3:0}, p2={-2:0}] [L48] *p2 = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, p1={-3:0}, p2={-2:0}] [L50] CALL f(p1,p2) VAL [p={-3:0}, q={-2:0}] [L13] EXPR \read(*p) VAL [\read(*p)=-1, p={-3:0}, p={-3:0}, q={-2:0}, q={-2:0}] [L13] EXPR \read(*q) VAL [\read(*p)=-1, \read(*q)=0, p={-3:0}, p={-3:0}, q={-2:0}, q={-2:0}] [L13] COND TRUE *p + *q < 0 [L50] RET f(p1,p2) VAL [p1={-3:0}, p2={-2:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 58 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 190 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 190 mSDsluCounter, 929 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 468 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 510 IncrementalHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 461 mSDtfsCounter, 510 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=6, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 42 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-15 18:00:31,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...