./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memset3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memset3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06914024aa49a34ce88c7dcbc25f89730c27c8e4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:26:15,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:26:15,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:26:15,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:26:15,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:26:15,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:26:15,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:26:15,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:26:15,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:26:15,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:26:15,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:26:15,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:26:15,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:26:15,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:26:15,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:26:15,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:26:15,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:26:15,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:26:15,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:26:15,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:26:15,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:26:15,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:26:15,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:26:15,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:26:15,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:26:15,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:26:15,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:26:15,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:26:15,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:26:15,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:26:15,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:26:15,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:26:15,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:26:15,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:26:15,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:26:15,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:26:15,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:26:15,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:26:15,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:26:15,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:26:15,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:26:15,703 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:26:15,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:26:15,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:26:15,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:26:15,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:26:15,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:26:15,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:26:15,732 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:26:15,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:26:15,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:26:15,733 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:26:15,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:26:15,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:26:15,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:26:15,734 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:26:15,734 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:26:15,734 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:26:15,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:26:15,734 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:26:15,735 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:26:15,735 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:26:15,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:26:15,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:26:15,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:26:15,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:26:15,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:26:15,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:26:15,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:26:15,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:26:15,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:26:15,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06914024aa49a34ce88c7dcbc25f89730c27c8e4 [2021-08-27 06:26:16,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:26:16,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:26:16,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:26:16,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:26:16,020 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:26:16,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memset3.c [2021-08-27 06:26:16,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26832746c/e49a7505234d49edaad6ba59e9e34704/FLAGa11a4c754 [2021-08-27 06:26:16,424 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:26:16,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memset3.c [2021-08-27 06:26:16,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26832746c/e49a7505234d49edaad6ba59e9e34704/FLAGa11a4c754 [2021-08-27 06:26:16,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26832746c/e49a7505234d49edaad6ba59e9e34704 [2021-08-27 06:26:16,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:26:16,443 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:26:16,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:26:16,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:26:16,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:26:16,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:26:16" (1/1) ... [2021-08-27 06:26:16,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2054d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:16, skipping insertion in model container [2021-08-27 06:26:16,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:26:16" (1/1) ... [2021-08-27 06:26:16,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:26:16,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:26:16,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:26:16,554 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:26:16,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:26:16,593 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:26:16,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:16 WrapperNode [2021-08-27 06:26:16,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:26:16,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:26:16,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:26:16,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:26:16,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:16" (1/1) ... [2021-08-27 06:26:16,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:16" (1/1) ... [2021-08-27 06:26:16,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:16" (1/1) ... [2021-08-27 06:26:16,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:16" (1/1) ... [2021-08-27 06:26:16,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:16" (1/1) ... [2021-08-27 06:26:16,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:16" (1/1) ... [2021-08-27 06:26:16,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:16" (1/1) ... [2021-08-27 06:26:16,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:26:16,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:26:16,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:26:16,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:26:16,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:16" (1/1) ... [2021-08-27 06:26:16,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:26:16,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:26:16,664 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) [2021-08-27 06:26:16,688 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 [2021-08-27 06:26:16,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:26:16,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:26:16,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:26:16,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 06:26:16,723 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 06:26:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:26:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:26:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 06:26:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:26:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:26:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:26:16,846 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:26:16,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:26:16,884 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 06:26:16,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:26:16 BoogieIcfgContainer [2021-08-27 06:26:16,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:26:16,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:26:16,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:26:16,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:26:16,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:26:16" (1/3) ... [2021-08-27 06:26:16,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789584d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:26:16, skipping insertion in model container [2021-08-27 06:26:16,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:16" (2/3) ... [2021-08-27 06:26:16,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789584d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:26:16, skipping insertion in model container [2021-08-27 06:26:16,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:26:16" (3/3) ... [2021-08-27 06:26:16,891 INFO L111 eAbstractionObserver]: Analyzing ICFG memset3.c [2021-08-27 06:26:16,894 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:26:16,894 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-27 06:26:16,926 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:26:16,930 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 06:26:16,931 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-27 06:26:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:26:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 06:26:16,945 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:26:16,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:26:16,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 06:26:16,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:26:16,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2021-08-27 06:26:16,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:26:16,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341828515] [2021-08-27 06:26:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:26:16,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:26:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:26:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:26:17,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:26:17,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341828515] [2021-08-27 06:26:17,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341828515] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:26:17,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:26:17,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:26:17,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014291729] [2021-08-27 06:26:17,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:26:17,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:26:17,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:26:17,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:26:17,132 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:26:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:26:17,217 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-08-27 06:26:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:26:17,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 06:26:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:26:17,227 INFO L225 Difference]: With dead ends: 19 [2021-08-27 06:26:17,227 INFO L226 Difference]: Without dead ends: 16 [2021-08-27 06:26:17,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:26:17,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-27 06:26:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-27 06:26:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:26:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-08-27 06:26:17,247 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-08-27 06:26:17,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:26:17,248 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-08-27 06:26:17,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:26:17,248 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-08-27 06:26:17,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 06:26:17,248 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:26:17,249 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:26:17,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 06:26:17,249 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 06:26:17,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:26:17,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2021-08-27 06:26:17,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:26:17,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789678822] [2021-08-27 06:26:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:26:17,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:26:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:26:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:26:17,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:26:17,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789678822] [2021-08-27 06:26:17,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789678822] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:26:17,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:26:17,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:26:17,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943120737] [2021-08-27 06:26:17,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:26:17,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:26:17,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:26:17,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:26:17,295 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:26:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:26:17,313 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-08-27 06:26:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:26:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 06:26:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:26:17,314 INFO L225 Difference]: With dead ends: 15 [2021-08-27 06:26:17,314 INFO L226 Difference]: Without dead ends: 15 [2021-08-27 06:26:17,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:26:17,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-27 06:26:17,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-27 06:26:17,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:26:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-08-27 06:26:17,316 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2021-08-27 06:26:17,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:26:17,317 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-08-27 06:26:17,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:26:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-08-27 06:26:17,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 06:26:17,317 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:26:17,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:26:17,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 06:26:17,318 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 06:26:17,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:26:17,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1462327129, now seen corresponding path program 1 times [2021-08-27 06:26:17,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:26:17,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639218271] [2021-08-27 06:26:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:26:17,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:26:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:26:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 06:26:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:26:17,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:26:17,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639218271] [2021-08-27 06:26:17,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639218271] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:26:17,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:26:17,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 06:26:17,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588322402] [2021-08-27 06:26:17,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:26:17,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:26:17,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:26:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:26:17,383 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:26:17,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:26:17,442 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-08-27 06:26:17,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:26:17,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-08-27 06:26:17,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:26:17,443 INFO L225 Difference]: With dead ends: 18 [2021-08-27 06:26:17,443 INFO L226 Difference]: Without dead ends: 16 [2021-08-27 06:26:17,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:26:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-27 06:26:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-27 06:26:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:26:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-08-27 06:26:17,446 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-08-27 06:26:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:26:17,446 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-08-27 06:26:17,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:26:17,446 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-08-27 06:26:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 06:26:17,446 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:26:17,447 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:26:17,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 06:26:17,447 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 06:26:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:26:17,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1971150090, now seen corresponding path program 1 times [2021-08-27 06:26:17,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:26:17,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441696557] [2021-08-27 06:26:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:26:17,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:26:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:26:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 06:26:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:26:17,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:26:17,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441696557] [2021-08-27 06:26:17,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441696557] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 06:26:17,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896164481] [2021-08-27 06:26:17,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:26:17,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:26:17,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:26:17,508 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) [2021-08-27 06:26:17,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 06:26:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:26:17,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:26:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:26:17,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896164481] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 06:26:17,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:26:17,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2021-08-27 06:26:17,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138495818] [2021-08-27 06:26:17,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:26:17,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:26:17,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:26:17,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:26:17,644 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:26:17,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:26:17,702 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-08-27 06:26:17,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:26:17,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-08-27 06:26:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:26:17,703 INFO L225 Difference]: With dead ends: 19 [2021-08-27 06:26:17,703 INFO L226 Difference]: Without dead ends: 17 [2021-08-27 06:26:17,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-27 06:26:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-27 06:26:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-27 06:26:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:26:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-08-27 06:26:17,705 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2021-08-27 06:26:17,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:26:17,705 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-08-27 06:26:17,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:26:17,706 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-08-27 06:26:17,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:26:17,706 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:26:17,706 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:26:17,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-27 06:26:17,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:26:17,923 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 06:26:17,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:26:17,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1034761479, now seen corresponding path program 2 times [2021-08-27 06:26:17,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:26:17,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003487498] [2021-08-27 06:26:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:26:17,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:26:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:26:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 06:26:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:26:17,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:26:17,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003487498] [2021-08-27 06:26:17,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003487498] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 06:26:17,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556756993] [2021-08-27 06:26:17,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:26:17,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:26:17,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:26:17,994 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) [2021-08-27 06:26:18,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 06:26:18,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 06:26:18,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:26:18,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 06:26:18,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:26:18,118 INFO L388 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-08-27 06:26:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 06:26:18,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556756993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:26:18,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 06:26:18,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2021-08-27 06:26:18,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388416905] [2021-08-27 06:26:18,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 06:26:18,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:26:18,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 06:26:18,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-27 06:26:18,274 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:26:18,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:26:18,321 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-08-27 06:26:18,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:26:18,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-08-27 06:26:18,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:26:18,321 INFO L225 Difference]: With dead ends: 16 [2021-08-27 06:26:18,321 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 06:26:18,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 91.2ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-27 06:26:18,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 06:26:18,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 06:26:18,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 06:26:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 06:26:18,326 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-08-27 06:26:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:26:18,326 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 06:26:18,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:26:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 06:26:18,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 06:26:18,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-08-27 06:26:18,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-08-27 06:26:18,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:26:18,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 06:26:18,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:26:18,532 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:26:18,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:26:18 BoogieIcfgContainer [2021-08-27 06:26:18,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:26:18,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:26:18,534 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:26:18,534 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:26:18,534 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:26:16" (3/4) ... [2021-08-27 06:26:18,536 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 06:26:18,543 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-27 06:26:18,544 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset [2021-08-27 06:26:18,545 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-27 06:26:18,548 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-08-27 06:26:18,549 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-08-27 06:26:18,549 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 06:26:18,549 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 06:26:18,578 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 06:26:18,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:26:18,580 INFO L168 Benchmark]: Toolchain (without parser) took 2135.60 ms. Allocated memory was 54.5 MB in the beginning and 88.1 MB in the end (delta: 33.6 MB). Free memory was 33.5 MB in the beginning and 38.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-08-27 06:26:18,581 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:26:18,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.50 ms. Allocated memory is still 54.5 MB. Free memory was 33.4 MB in the beginning and 38.9 MB in the end (delta: -5.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:26:18,582 INFO L168 Benchmark]: Boogie Preprocessor took 25.05 ms. Allocated memory is still 54.5 MB. Free memory was 38.9 MB in the beginning and 37.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:26:18,582 INFO L168 Benchmark]: RCFGBuilder took 263.00 ms. Allocated memory is still 54.5 MB. Free memory was 37.5 MB in the beginning and 26.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 06:26:18,582 INFO L168 Benchmark]: TraceAbstraction took 1646.89 ms. Allocated memory was 54.5 MB in the beginning and 88.1 MB in the end (delta: 33.6 MB). Free memory was 25.6 MB in the beginning and 41.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:26:18,583 INFO L168 Benchmark]: Witness Printer took 44.87 ms. Allocated memory is still 88.1 MB. Free memory was 40.5 MB in the beginning and 38.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:26:18,585 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 150.50 ms. Allocated memory is still 54.5 MB. Free memory was 33.4 MB in the beginning and 38.9 MB in the end (delta: -5.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.05 ms. Allocated memory is still 54.5 MB. Free memory was 38.9 MB in the beginning and 37.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 263.00 ms. Allocated memory is still 54.5 MB. Free memory was 37.5 MB in the beginning and 26.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1646.89 ms. Allocated memory was 54.5 MB in the beginning and 88.1 MB in the end (delta: 33.6 MB). Free memory was 25.6 MB in the beginning and 41.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. * Witness Printer took 44.87 ms. Allocated memory is still 88.1 MB. Free memory was 40.5 MB in the beginning and 38.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1607.4ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 8.9ms, AutomataDifference: 295.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 36 SDslu, 66 SDs, 0 SdLazy, 131 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 125.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 237.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.2ms SsaConstructionTime, 68.7ms SatisfiabilityAnalysisTime, 614.3ms InterpolantComputationTime, 90 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 83 ConstructedInterpolants, 8 QuantifiedInterpolants, 246 SizeOfPredicates, 2 NumberOfNonLiveVariables, 137 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-27 06:26:18,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...