/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-fpi/s2lif.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:20:13,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:20:13,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:20:13,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:20:13,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:20:13,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:20:13,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:20:13,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:20:13,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:20:13,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:20:13,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:20:13,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:20:13,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:20:13,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:20:13,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:20:13,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:20:13,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:20:13,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:20:13,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:20:13,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:20:13,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:20:13,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:20:13,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:20:13,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:20:13,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 16:20:13,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:20:13,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:20:13,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:20:13,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:20:13,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:20:13,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:20:13,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:20:13,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:20:13,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:20:13,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:20:13,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:20:13,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 16:20:13,592 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:20:13,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:20:13,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:20:13,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:20:13,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:20:13,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:20:13,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:20:13,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:20:13,599 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:20:13,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:20:13,600 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:20:13,600 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:20:13,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:20:13,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:20:13,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:20:13,601 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:20:13,602 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:20:13,602 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:20:13,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:20:13,602 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:20:13,603 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:20:13,603 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:20:13,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:20:13,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:20:13,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:20:13,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:20:13,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:20:13,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:20:13,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:20:13,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:20:13,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:20:13,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:20:14,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:20:14,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:20:14,033 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:20:14,034 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:20:14,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s2lif.c [2022-10-15 16:20:14,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c31bcd394/c888a02dc5ec476f95ee25a074578066/FLAG6f9b4fc6a [2022-10-15 16:20:14,751 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:20:14,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s2lif.c [2022-10-15 16:20:14,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c31bcd394/c888a02dc5ec476f95ee25a074578066/FLAG6f9b4fc6a [2022-10-15 16:20:15,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c31bcd394/c888a02dc5ec476f95ee25a074578066 [2022-10-15 16:20:15,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:20:15,089 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:20:15,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:20:15,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:20:15,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:20:15,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd74747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15, skipping insertion in model container [2022-10-15 16:20:15,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:20:15,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:20:15,376 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s2lif.c[588,601] [2022-10-15 16:20:15,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:20:15,424 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:20:15,438 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s2lif.c[588,601] [2022-10-15 16:20:15,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:20:15,470 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:20:15,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15 WrapperNode [2022-10-15 16:20:15,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:20:15,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:20:15,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:20:15,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:20:15,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,525 INFO L138 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2022-10-15 16:20:15,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:20:15,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:20:15,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:20:15,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:20:15,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,557 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:20:15,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:20:15,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:20:15,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:20:15,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15" (1/1) ... [2022-10-15 16:20:15,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:20:15,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:20:15,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 16:20:15,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 16:20:15,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:20:15,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:20:15,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 16:20:15,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:20:15,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 16:20:15,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:20:15,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:20:15,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:20:15,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 16:20:15,753 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:20:15,755 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:20:16,133 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:20:16,142 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:20:16,143 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 16:20:16,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:20:16 BoogieIcfgContainer [2022-10-15 16:20:16,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:20:16,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:20:16,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:20:16,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:20:16,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:20:15" (1/3) ... [2022-10-15 16:20:16,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1354972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:20:16, skipping insertion in model container [2022-10-15 16:20:16,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:20:15" (2/3) ... [2022-10-15 16:20:16,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1354972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:20:16, skipping insertion in model container [2022-10-15 16:20:16,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:20:16" (3/3) ... [2022-10-15 16:20:16,157 INFO L112 eAbstractionObserver]: Analyzing ICFG s2lif.c [2022-10-15 16:20:16,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:20:16,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-10-15 16:20:16,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:20:16,265 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;@145e37f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:20:16,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-10-15 16:20:16,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 59 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:16,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:20:16,282 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:16,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:20:16,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 16:20:16,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:16,290 INFO L85 PathProgramCache]: Analyzing trace with hash 925708, now seen corresponding path program 1 times [2022-10-15 16:20:16,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:16,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182456577] [2022-10-15 16:20:16,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:16,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:16,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:16,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182456577] [2022-10-15 16:20:16,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182456577] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:20:16,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:20:16,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:20:16,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753371174] [2022-10-15 16:20:16,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:20:16,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:20:16,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:16,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:20:16,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:16,550 INFO L87 Difference]: Start difference. First operand has 60 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 59 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:16,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:16,632 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2022-10-15 16:20:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:20:16,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-10-15 16:20:16,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:16,646 INFO L225 Difference]: With dead ends: 61 [2022-10-15 16:20:16,647 INFO L226 Difference]: Without dead ends: 58 [2022-10-15 16:20:16,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:16,654 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:16,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 94 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:20:16,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-10-15 16:20:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-10-15 16:20:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 57 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:16,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2022-10-15 16:20:16,702 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 4 [2022-10-15 16:20:16,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:16,703 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2022-10-15 16:20:16,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2022-10-15 16:20:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:20:16,704 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:16,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:20:16,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:20:16,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 16:20:16,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:16,706 INFO L85 PathProgramCache]: Analyzing trace with hash 889571242, now seen corresponding path program 1 times [2022-10-15 16:20:16,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:16,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055828867] [2022-10-15 16:20:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:16,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:16,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:16,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055828867] [2022-10-15 16:20:16,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055828867] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:20:16,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:20:16,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:20:16,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432828305] [2022-10-15 16:20:16,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:20:16,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:20:16,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:16,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:20:16,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:16,946 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:17,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:17,042 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2022-10-15 16:20:17,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:20:17,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 16:20:17,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:17,047 INFO L225 Difference]: With dead ends: 54 [2022-10-15 16:20:17,047 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 16:20:17,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:17,056 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:17,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 36 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:20:17,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 16:20:17,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-10-15 16:20:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2022-10-15 16:20:17,077 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 6 [2022-10-15 16:20:17,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:17,079 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2022-10-15 16:20:17,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2022-10-15 16:20:17,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:20:17,080 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:17,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:20:17,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:20:17,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 16:20:17,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:17,084 INFO L85 PathProgramCache]: Analyzing trace with hash 889571243, now seen corresponding path program 1 times [2022-10-15 16:20:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:17,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120104043] [2022-10-15 16:20:17,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:17,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:17,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:17,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120104043] [2022-10-15 16:20:17,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120104043] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:20:17,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:20:17,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:20:17,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606347311] [2022-10-15 16:20:17,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:20:17,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:20:17,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:17,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:20:17,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:17,336 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:17,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:17,414 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2022-10-15 16:20:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:20:17,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 16:20:17,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:17,419 INFO L225 Difference]: With dead ends: 50 [2022-10-15 16:20:17,419 INFO L226 Difference]: Without dead ends: 50 [2022-10-15 16:20:17,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:17,429 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 46 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:17,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 37 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:20:17,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-15 16:20:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-10-15 16:20:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 49 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2022-10-15 16:20:17,447 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 6 [2022-10-15 16:20:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:17,448 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2022-10-15 16:20:17,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2022-10-15 16:20:17,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 16:20:17,449 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:17,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:17,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:20:17,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 16:20:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:17,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1268642443, now seen corresponding path program 1 times [2022-10-15 16:20:17,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:17,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584770624] [2022-10-15 16:20:17,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:17,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:17,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:17,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584770624] [2022-10-15 16:20:17,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584770624] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:20:17,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:20:17,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:20:17,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136330841] [2022-10-15 16:20:17,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:20:17,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:20:17,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:17,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:20:17,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:17,549 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:17,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:17,598 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-10-15 16:20:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:20:17,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 16:20:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:17,600 INFO L225 Difference]: With dead ends: 43 [2022-10-15 16:20:17,600 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 16:20:17,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:20:17,602 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:17,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 29 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:20:17,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 16:20:17,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-10-15 16:20:17,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 42 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-10-15 16:20:17,608 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 9 [2022-10-15 16:20:17,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:17,609 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-10-15 16:20:17,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-10-15 16:20:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 16:20:17,610 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:17,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:17,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 16:20:17,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 16:20:17,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:17,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1268642444, now seen corresponding path program 1 times [2022-10-15 16:20:17,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:17,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894701711] [2022-10-15 16:20:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:17,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:17,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:17,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894701711] [2022-10-15 16:20:17,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894701711] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:20:17,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:20:17,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:20:17,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950069646] [2022-10-15 16:20:17,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:20:17,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:20:17,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:17,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:20:17,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:20:17,768 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:17,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:17,920 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2022-10-15 16:20:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:20:17,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 16:20:17,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:17,922 INFO L225 Difference]: With dead ends: 62 [2022-10-15 16:20:17,922 INFO L226 Difference]: Without dead ends: 62 [2022-10-15 16:20:17,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:20:17,924 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 114 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:17,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 31 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:20:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-10-15 16:20:17,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2022-10-15 16:20:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:17,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-10-15 16:20:17,932 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 9 [2022-10-15 16:20:17,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:17,932 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-10-15 16:20:17,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:17,933 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-10-15 16:20:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 16:20:17,933 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:17,934 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:17,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 16:20:17,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 16:20:17,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:17,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1585184552, now seen corresponding path program 1 times [2022-10-15 16:20:17,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:17,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158291390] [2022-10-15 16:20:17,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:17,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:18,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:18,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158291390] [2022-10-15 16:20:18,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158291390] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:20:18,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247616175] [2022-10-15 16:20:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:18,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:20:18,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:20:18,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:20:18,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 16:20:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:18,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:20:18,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:20:18,439 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-15 16:20:18,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-10-15 16:20:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:18,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:20:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:18,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247616175] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:20:18,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:20:18,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-10-15 16:20:18,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578237454] [2022-10-15 16:20:18,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:20:18,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 16:20:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 16:20:18,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:20:18,869 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:19,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:19,067 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2022-10-15 16:20:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:20:19,068 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 16:20:19,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:19,069 INFO L225 Difference]: With dead ends: 55 [2022-10-15 16:20:19,069 INFO L226 Difference]: Without dead ends: 55 [2022-10-15 16:20:19,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-10-15 16:20:19,070 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 185 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:19,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 53 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:20:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-15 16:20:19,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 39. [2022-10-15 16:20:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.135135135135135) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-10-15 16:20:19,076 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 12 [2022-10-15 16:20:19,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:19,076 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-10-15 16:20:19,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:19,077 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-10-15 16:20:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 16:20:19,078 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:19,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:19,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 16:20:19,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-15 16:20:19,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 16:20:19,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:19,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1279699216, now seen corresponding path program 1 times [2022-10-15 16:20:19,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:19,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169101957] [2022-10-15 16:20:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:19,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:20,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:20,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169101957] [2022-10-15 16:20:20,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169101957] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:20:20,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328014928] [2022-10-15 16:20:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:20,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:20:20,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:20:20,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:20:20,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 16:20:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:20,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 42 conjunts are in the unsatisfiable core [2022-10-15 16:20:20,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:20:20,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-15 16:20:20,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-15 16:20:20,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-15 16:20:21,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-10-15 16:20:21,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-10-15 16:20:21,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-10-15 16:20:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:21,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:20:22,053 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:20:22,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 28 [2022-10-15 16:20:22,211 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:20:22,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-10-15 16:20:22,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2022-10-15 16:20:22,227 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:20:22,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2022-10-15 16:20:22,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-15 16:20:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:20:22,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328014928] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:20:22,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:20:22,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 45 [2022-10-15 16:20:22,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041959659] [2022-10-15 16:20:22,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:20:22,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-10-15 16:20:22,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-10-15 16:20:22,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=1646, Unknown=2, NotChecked=0, Total=1980 [2022-10-15 16:20:22,330 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 45 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 45 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:25,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:25,389 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2022-10-15 16:20:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-10-15 16:20:25,390 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 45 states have internal predecessors, (79), 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 32 [2022-10-15 16:20:25,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:25,393 INFO L225 Difference]: With dead ends: 115 [2022-10-15 16:20:25,393 INFO L226 Difference]: Without dead ends: 114 [2022-10-15 16:20:25,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=902, Invalid=3926, Unknown=2, NotChecked=0, Total=4830 [2022-10-15 16:20:25,396 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 235 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:25,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 241 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 637 Invalid, 0 Unknown, 173 Unchecked, 0.8s Time] [2022-10-15 16:20:25,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-10-15 16:20:25,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 74. [2022-10-15 16:20:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2022-10-15 16:20:25,405 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 32 [2022-10-15 16:20:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:25,405 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2022-10-15 16:20:25,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 45 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2022-10-15 16:20:25,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 16:20:25,407 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:25,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:25,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-15 16:20:25,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-15 16:20:25,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 16:20:25,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash 574092112, now seen corresponding path program 1 times [2022-10-15 16:20:25,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:25,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921422365] [2022-10-15 16:20:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:25,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:20:25,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:20:25,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921422365] [2022-10-15 16:20:25,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921422365] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:20:25,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564079654] [2022-10-15 16:20:25,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:25,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:20:25,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:20:25,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:20:25,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 16:20:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:20:26,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 16:20:26,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:20:26,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-15 16:20:26,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-15 16:20:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:20:26,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:20:26,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-10-15 16:20:26,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-10-15 16:20:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:20:26,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564079654] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:20:26,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:20:26,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-10-15 16:20:26,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940023547] [2022-10-15 16:20:26,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:20:26,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 16:20:26,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:20:26,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 16:20:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:20:26,176 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:20:26,328 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-10-15 16:20:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:20:26,330 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-10-15 16:20:26,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:20:26,331 INFO L225 Difference]: With dead ends: 73 [2022-10-15 16:20:26,331 INFO L226 Difference]: Without dead ends: 73 [2022-10-15 16:20:26,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:20:26,338 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:20:26,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 151 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:20:26,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-10-15 16:20:26,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2022-10-15 16:20:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 63 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2022-10-15 16:20:26,351 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 32 [2022-10-15 16:20:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:20:26,351 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2022-10-15 16:20:26,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:20:26,354 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2022-10-15 16:20:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-15 16:20:26,355 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:20:26,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:26,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:20:26,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:20:26,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 16:20:26,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:20:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1015975102, now seen corresponding path program 1 times [2022-10-15 16:20:26,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:20:26,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196805847] [2022-10-15 16:20:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:20:26,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:20:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:20:26,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-15 16:20:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:20:26,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-15 16:20:26,640 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-15 16:20:26,642 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (23 of 24 remaining) [2022-10-15 16:20:26,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 24 remaining) [2022-10-15 16:20:26,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2022-10-15 16:20:26,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2022-10-15 16:20:26,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2022-10-15 16:20:26,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2022-10-15 16:20:26,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2022-10-15 16:20:26,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2022-10-15 16:20:26,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2022-10-15 16:20:26,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2022-10-15 16:20:26,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2022-10-15 16:20:26,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2022-10-15 16:20:26,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2022-10-15 16:20:26,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2022-10-15 16:20:26,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2022-10-15 16:20:26,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2022-10-15 16:20:26,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2022-10-15 16:20:26,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 24 remaining) [2022-10-15 16:20:26,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 24 remaining) [2022-10-15 16:20:26,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 24 remaining) [2022-10-15 16:20:26,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 24 remaining) [2022-10-15 16:20:26,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 24 remaining) [2022-10-15 16:20:26,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 24 remaining) [2022-10-15 16:20:26,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2022-10-15 16:20:26,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 16:20:26,653 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:20:26,658 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 16:20:26,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 04:20:26 BoogieIcfgContainer [2022-10-15 16:20:26,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 16:20:26,699 INFO L158 Benchmark]: Toolchain (without parser) took 11614.67ms. Allocated memory was 168.8MB in the beginning and 251.7MB in the end (delta: 82.8MB). Free memory was 142.4MB in the beginning and 172.7MB in the end (delta: -30.3MB). Peak memory consumption was 54.1MB. Max. memory is 8.0GB. [2022-10-15 16:20:26,700 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 168.8MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 16:20:26,700 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.60ms. Allocated memory is still 168.8MB. Free memory was 142.2MB in the beginning and 132.0MB in the end (delta: 10.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-15 16:20:26,700 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.89ms. Allocated memory is still 168.8MB. Free memory was 132.0MB in the beginning and 130.3MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 16:20:26,701 INFO L158 Benchmark]: Boogie Preprocessor took 33.79ms. Allocated memory is still 168.8MB. Free memory was 130.3MB in the beginning and 128.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 16:20:26,701 INFO L158 Benchmark]: RCFGBuilder took 584.01ms. Allocated memory is still 168.8MB. Free memory was 128.8MB in the beginning and 149.5MB in the end (delta: -20.6MB). Peak memory consumption was 19.2MB. Max. memory is 8.0GB. [2022-10-15 16:20:26,701 INFO L158 Benchmark]: TraceAbstraction took 10549.91ms. Allocated memory was 168.8MB in the beginning and 251.7MB in the end (delta: 82.8MB). Free memory was 148.9MB in the beginning and 172.7MB in the end (delta: -23.8MB). Peak memory consumption was 59.0MB. Max. memory is 8.0GB. [2022-10-15 16:20:26,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 168.8MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 375.60ms. Allocated memory is still 168.8MB. Free memory was 142.2MB in the beginning and 132.0MB in the end (delta: 10.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.89ms. Allocated memory is still 168.8MB. Free memory was 132.0MB in the beginning and 130.3MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.79ms. Allocated memory is still 168.8MB. Free memory was 130.3MB in the beginning and 128.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 584.01ms. Allocated memory is still 168.8MB. Free memory was 128.8MB in the beginning and 149.5MB in the end (delta: -20.6MB). Peak memory consumption was 19.2MB. Max. memory is 8.0GB. * TraceAbstraction took 10549.91ms. Allocated memory was 168.8MB in the beginning and 251.7MB in the end (delta: 82.8MB). Free memory was 148.9MB in the beginning and 172.7MB in the end (delta: -23.8MB). Peak memory consumption was 59.0MB. 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: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 21. Possible FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 VAL [a={-1:0}, N=1, sum={5:0}] [L32] i=0 VAL [a={-1:0}, i=0, N=1, sum={5:0}] [L32] COND TRUE i