./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 952278f5e85aedce23895e068e08311605efdfa8 ......................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 18:24:22,533 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 18:24:22,534 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 18:24:22,540 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 18:24:22,540 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 18:24:22,541 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 18:24:22,541 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 18:24:22,542 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 18:24:22,543 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 18:24:22,543 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 18:24:22,544 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 18:24:22,544 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 18:24:22,544 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 18:24:22,545 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 18:24:22,545 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 18:24:22,546 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 18:24:22,546 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 18:24:22,547 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 18:24:22,548 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 18:24:22,549 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 18:24:22,549 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 18:24:22,550 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 18:24:22,551 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 18:24:22,551 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 18:24:22,551 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 18:24:22,551 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 18:24:22,552 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 18:24:22,552 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 18:24:22,553 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 18:24:22,553 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 18:24:22,553 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 18:24:22,554 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 18:24:22,554 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 18:24:22,554 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 18:24:22,554 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 18:24:22,555 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 18:24:22,555 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-08 18:24:22,562 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 18:24:22,562 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 18:24:22,563 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 18:24:22,563 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 18:24:22,563 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 18:24:22,563 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 18:24:22,563 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 18:24:22,563 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 18:24:22,563 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 18:24:22,564 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 18:24:22,564 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 18:24:22,564 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 18:24:22,564 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 18:24:22,564 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 18:24:22,564 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 18:24:22,564 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 18:24:22,564 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 18:24:22,564 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 18:24:22,565 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 18:24:22,565 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 18:24:22,565 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 18:24:22,565 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-08 18:24:22,565 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-08 18:24:22,565 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-08 18:24:22,565 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 18:24:22,565 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 18:24:22,565 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 18:24:22,565 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 18:24:22,565 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 18:24:22,565 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 18:24:22,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 18:24:22,566 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 18:24:22,566 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 18:24:22,566 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 18:24:22,566 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 18:24:22,566 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 18:24:22,566 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan 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 -> Taipan 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 -> 952278f5e85aedce23895e068e08311605efdfa8 [2018-12-08 18:24:22,585 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 18:24:22,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 18:24:22,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 18:24:22,598 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 18:24:22,598 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 18:24:22,599 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-12-08 18:24:22,644 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan/data/813857e57/845f27f9f65a48ffb0a9d0729541c13d/FLAG0eab7c3f8 [2018-12-08 18:24:22,942 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 18:24:22,943 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/sv-benchmarks/c/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-12-08 18:24:22,946 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan/data/813857e57/845f27f9f65a48ffb0a9d0729541c13d/FLAG0eab7c3f8 [2018-12-08 18:24:22,955 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan/data/813857e57/845f27f9f65a48ffb0a9d0729541c13d [2018-12-08 18:24:22,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 18:24:22,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 18:24:22,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 18:24:22,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 18:24:22,961 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 18:24:22,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 06:24:22" (1/1) ... [2018-12-08 18:24:22,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59facd15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:22, skipping insertion in model container [2018-12-08 18:24:22,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 06:24:22" (1/1) ... [2018-12-08 18:24:22,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 18:24:22,977 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 18:24:23,076 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 18:24:23,084 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 18:24:23,095 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 18:24:23,105 INFO L195 MainTranslator]: Completed translation [2018-12-08 18:24:23,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:23 WrapperNode [2018-12-08 18:24:23,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 18:24:23,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 18:24:23,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 18:24:23,106 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 18:24:23,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:23" (1/1) ... [2018-12-08 18:24:23,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:23" (1/1) ... [2018-12-08 18:24:23,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 18:24:23,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 18:24:23,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 18:24:23,121 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 18:24:23,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:23" (1/1) ... [2018-12-08 18:24:23,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:23" (1/1) ... [2018-12-08 18:24:23,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:23" (1/1) ... [2018-12-08 18:24:23,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:23" (1/1) ... [2018-12-08 18:24:23,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:23" (1/1) ... [2018-12-08 18:24:23,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:23" (1/1) ... [2018-12-08 18:24:23,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:23" (1/1) ... [2018-12-08 18:24:23,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 18:24:23,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 18:24:23,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 18:24:23,169 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 18:24:23,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 18:24:23,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 18:24:23,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 18:24:23,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 18:24:23,199 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2018-12-08 18:24:23,199 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2018-12-08 18:24:23,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 18:24:23,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 18:24:23,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 18:24:23,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 18:24:23,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 18:24:23,320 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 18:24:23,320 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-08 18:24:23,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 06:24:23 BoogieIcfgContainer [2018-12-08 18:24:23,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 18:24:23,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 18:24:23,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 18:24:23,323 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 18:24:23,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 06:24:22" (1/3) ... [2018-12-08 18:24:23,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd04fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 06:24:23, skipping insertion in model container [2018-12-08 18:24:23,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:24:23" (2/3) ... [2018-12-08 18:24:23,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd04fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 06:24:23, skipping insertion in model container [2018-12-08 18:24:23,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 06:24:23" (3/3) ... [2018-12-08 18:24:23,325 INFO L112 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-12-08 18:24:23,331 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 18:24:23,335 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-12-08 18:24:23,344 INFO L257 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2018-12-08 18:24:23,358 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 18:24:23,358 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-08 18:24:23,358 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 18:24:23,358 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 18:24:23,358 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 18:24:23,358 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 18:24:23,358 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 18:24:23,358 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 18:24:23,367 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-12-08 18:24:23,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 18:24:23,373 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:24:23,373 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:24:23,375 INFO L423 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr11REQUIRES_VIOLATION, SelectionSortErr6REQUIRES_VIOLATION, SelectionSortErr4REQUIRES_VIOLATION, SelectionSortErr7REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION, SelectionSortErr8REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr9REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr10REQUIRES_VIOLATION, SelectionSortErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 18:24:23,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:24:23,378 INFO L82 PathProgramCache]: Analyzing trace with hash 229154885, now seen corresponding path program 1 times [2018-12-08 18:24:23,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:24:23,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:24:23,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:24:23,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:24:23,406 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:24:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:24:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 18:24:23,473 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:24:23,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 18:24:23,473 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 18:24:23,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 18:24:23,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 18:24:23,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 18:24:23,485 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2018-12-08 18:24:23,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:24:23,518 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2018-12-08 18:24:23,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 18:24:23,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-08 18:24:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:24:23,524 INFO L225 Difference]: With dead ends: 41 [2018-12-08 18:24:23,524 INFO L226 Difference]: Without dead ends: 34 [2018-12-08 18:24:23,525 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 18:24:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-08 18:24:23,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-08 18:24:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-08 18:24:23,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-12-08 18:24:23,546 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 11 [2018-12-08 18:24:23,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:24:23,546 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-12-08 18:24:23,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 18:24:23,546 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-12-08 18:24:23,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 18:24:23,547 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:24:23,547 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:24:23,547 INFO L423 AbstractCegarLoop]: === Iteration 2 === [SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr11REQUIRES_VIOLATION, SelectionSortErr6REQUIRES_VIOLATION, SelectionSortErr4REQUIRES_VIOLATION, SelectionSortErr7REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION, SelectionSortErr8REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr9REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr10REQUIRES_VIOLATION, SelectionSortErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 18:24:23,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:24:23,547 INFO L82 PathProgramCache]: Analyzing trace with hash 229154931, now seen corresponding path program 1 times [2018-12-08 18:24:23,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:24:23,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:24:23,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:24:23,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:24:23,548 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:24:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 18:24:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 18:24:23,581 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 18:24:23,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 06:24:23 BoogieIcfgContainer [2018-12-08 18:24:23,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 18:24:23,596 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 18:24:23,596 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 18:24:23,596 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 18:24:23,596 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 06:24:23" (3/4) ... [2018-12-08 18:24:23,597 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 18:24:23,621 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b37c4143-d100-4b7b-b0c8-523e089445b5/bin-2019/utaipan/witness.graphml [2018-12-08 18:24:23,621 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 18:24:23,621 INFO L168 Benchmark]: Toolchain (without parser) took 663.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 950.9 MB in the beginning and 1.1 GB in the end (delta: -108.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 18:24:23,622 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 18:24:23,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.63 ms. Allocated memory is still 1.0 GB. Free memory was 950.9 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 18:24:23,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.10 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 18:24:23,623 INFO L168 Benchmark]: Boogie Preprocessor took 47.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-08 18:24:23,624 INFO L168 Benchmark]: RCFGBuilder took 152.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-12-08 18:24:23,624 INFO L168 Benchmark]: TraceAbstraction took 274.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-12-08 18:24:23,625 INFO L168 Benchmark]: Witness Printer took 25.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 18:24:23,627 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.63 ms. Allocated memory is still 1.0 GB. Free memory was 950.9 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.10 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 152.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 274.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Witness Printer took 25.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L20] int *a; [L21] int array_size = __VERIFIER_nondet_int(); [L22] CALL SelectionSort(a, array_size) VAL [\old(array_size)=2, a={4:3}] [L4] int i; [L5] i = 0 VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0] [L5] COND TRUE i < array_size - 1 [L7] int j, min, temp; [L8] min = i [L9] j = i+1 VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] [L9] COND TRUE j < array_size VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] [L11] a[j] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 41 locations, 13 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 9 SDslu, 28 SDs, 0 SdLazy, 9 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...