./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/array-memsafety/bubblesort_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/bubblesort_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/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 d947ac2f4314b6371797f06202127d0425ea9bb5 ......................................................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 10:06:21,975 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:06:21,976 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:06:21,984 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:06:21,984 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:06:21,985 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:06:21,986 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:06:21,987 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:06:21,988 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:06:21,989 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:06:21,989 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:06:21,990 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:06:21,990 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:06:21,991 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:06:21,991 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:06:21,992 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:06:21,992 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:06:21,993 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:06:21,994 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:06:21,995 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:06:21,995 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:06:21,996 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:06:21,998 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:06:21,998 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:06:21,998 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:06:21,999 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:06:21,999 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:06:22,000 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:06:22,001 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:06:22,001 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:06:22,002 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:06:22,002 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:06:22,002 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:06:22,002 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:06:22,003 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:06:22,004 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:06:22,004 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-11-18 10:06:22,014 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:06:22,015 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:06:22,015 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:06:22,016 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 10:06:22,016 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 10:06:22,016 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 10:06:22,016 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 10:06:22,016 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 10:06:22,016 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 10:06:22,017 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 10:06:22,017 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 10:06:22,017 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 10:06:22,017 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 10:06:22,017 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:06:22,018 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:06:22,018 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:06:22,018 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:06:22,018 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 10:06:22,018 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:06:22,018 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:06:22,019 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:06:22,019 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 10:06:22,019 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 10:06:22,019 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 10:06:22,019 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:06:22,019 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:06:22,019 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:06:22,020 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:06:22,020 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:06:22,020 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:06:22,020 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:06:22,020 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:06:22,020 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:06:22,020 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:06:22,021 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 10:06:22,021 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:06:22,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:06:22,021 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_5a44de64-58ad-4359-a229-59f83373df00/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 -> d947ac2f4314b6371797f06202127d0425ea9bb5 [2018-11-18 10:06:22,046 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:06:22,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:06:22,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:06:22,060 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:06:22,060 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:06:22,061 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/bubblesort_unsafe_false-valid-deref.i [2018-11-18 10:06:22,100 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/bin-2019/utaipan/data/6b34dcbd8/60d5fd700ccd466eb3cdabb485eb24dc/FLAGb0bfaad6b [2018-11-18 10:06:22,496 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:06:22,496 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/sv-benchmarks/c/array-memsafety/bubblesort_unsafe_false-valid-deref.i [2018-11-18 10:06:22,501 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/bin-2019/utaipan/data/6b34dcbd8/60d5fd700ccd466eb3cdabb485eb24dc/FLAGb0bfaad6b [2018-11-18 10:06:22,512 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/bin-2019/utaipan/data/6b34dcbd8/60d5fd700ccd466eb3cdabb485eb24dc [2018-11-18 10:06:22,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:06:22,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 10:06:22,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:06:22,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:06:22,518 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:06:22,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:06:22" (1/1) ... [2018-11-18 10:06:22,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd6722c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22, skipping insertion in model container [2018-11-18 10:06:22,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:06:22" (1/1) ... [2018-11-18 10:06:22,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:06:22,541 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:06:22,647 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:06:22,653 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:06:22,663 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:06:22,671 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:06:22,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22 WrapperNode [2018-11-18 10:06:22,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:06:22,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 10:06:22,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 10:06:22,672 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 10:06:22,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22" (1/1) ... [2018-11-18 10:06:22,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22" (1/1) ... [2018-11-18 10:06:22,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 10:06:22,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:06:22,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:06:22,692 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:06:22,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22" (1/1) ... [2018-11-18 10:06:22,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22" (1/1) ... [2018-11-18 10:06:22,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22" (1/1) ... [2018-11-18 10:06:22,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22" (1/1) ... [2018-11-18 10:06:22,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22" (1/1) ... [2018-11-18 10:06:22,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22" (1/1) ... [2018-11-18 10:06:22,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22" (1/1) ... [2018-11-18 10:06:22,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:06:22,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:06:22,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:06:22,746 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:06:22,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/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 [2018-11-18 10:06:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 10:06:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure bubbleSort [2018-11-18 10:06:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure bubbleSort [2018-11-18 10:06:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:06:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:06:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:06:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:06:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 10:06:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:06:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:06:23,000 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:06:23,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:06:23 BoogieIcfgContainer [2018-11-18 10:06:23,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:06:23,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:06:23,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:06:23,005 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:06:23,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:06:22" (1/3) ... [2018-11-18 10:06:23,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d11c188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:06:23, skipping insertion in model container [2018-11-18 10:06:23,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:06:22" (2/3) ... [2018-11-18 10:06:23,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d11c188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:06:23, skipping insertion in model container [2018-11-18 10:06:23,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:06:23" (3/3) ... [2018-11-18 10:06:23,009 INFO L112 eAbstractionObserver]: Analyzing ICFG bubblesort_unsafe_false-valid-deref.i [2018-11-18 10:06:23,018 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:06:23,025 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-11-18 10:06:23,040 INFO L257 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2018-11-18 10:06:23,064 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:06:23,064 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 10:06:23,064 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:06:23,064 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:06:23,064 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:06:23,064 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:06:23,064 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:06:23,064 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:06:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-18 10:06:23,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 10:06:23,088 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:06:23,089 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:06:23,091 INFO L423 AbstractCegarLoop]: === Iteration 1 === [bubbleSortErr0REQUIRES_VIOLATION, bubbleSortErr5REQUIRES_VIOLATION, bubbleSortErr6REQUIRES_VIOLATION, bubbleSortErr11REQUIRES_VIOLATION, bubbleSortErr4REQUIRES_VIOLATION, bubbleSortErr9REQUIRES_VIOLATION, bubbleSortErr10REQUIRES_VIOLATION, bubbleSortErr8REQUIRES_VIOLATION, bubbleSortErr3REQUIRES_VIOLATION, bubbleSortErr1REQUIRES_VIOLATION, bubbleSortErr2REQUIRES_VIOLATION, bubbleSortErr7REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-18 10:06:23,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:06:23,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1618604079, now seen corresponding path program 1 times [2018-11-18 10:06:23,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:06:23,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:06:23,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:06:23,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:06:23,139 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:06:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:06:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:06:23,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:06:23,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:06:23,204 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:06:23,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 10:06:23,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 10:06:23,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:06:23,221 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-18 10:06:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:06:23,233 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-11-18 10:06:23,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 10:06:23,234 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-18 10:06:23,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:06:23,242 INFO L225 Difference]: With dead ends: 42 [2018-11-18 10:06:23,242 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 10:06:23,244 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:06:23,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 10:06:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 10:06:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 10:06:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-11-18 10:06:23,273 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2018-11-18 10:06:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:06:23,273 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-11-18 10:06:23,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 10:06:23,274 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-11-18 10:06:23,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 10:06:23,274 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:06:23,274 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:06:23,274 INFO L423 AbstractCegarLoop]: === Iteration 2 === [bubbleSortErr0REQUIRES_VIOLATION, bubbleSortErr5REQUIRES_VIOLATION, bubbleSortErr6REQUIRES_VIOLATION, bubbleSortErr11REQUIRES_VIOLATION, bubbleSortErr4REQUIRES_VIOLATION, bubbleSortErr9REQUIRES_VIOLATION, bubbleSortErr10REQUIRES_VIOLATION, bubbleSortErr8REQUIRES_VIOLATION, bubbleSortErr3REQUIRES_VIOLATION, bubbleSortErr1REQUIRES_VIOLATION, bubbleSortErr2REQUIRES_VIOLATION, bubbleSortErr7REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-18 10:06:23,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:06:23,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1573832596, now seen corresponding path program 1 times [2018-11-18 10:06:23,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:06:23,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:06:23,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:06:23,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:06:23,276 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:06:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:06:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:06:23,310 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:06:23,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:06:23 BoogieIcfgContainer [2018-11-18 10:06:23,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:06:23,328 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:06:23,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:06:23,329 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:06:23,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:06:23" (3/4) ... [2018-11-18 10:06:23,331 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 10:06:23,358 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5a44de64-58ad-4359-a229-59f83373df00/bin-2019/utaipan/witness.graphml [2018-11-18 10:06:23,358 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:06:23,358 INFO L168 Benchmark]: Toolchain (without parser) took 844.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 955.7 MB in the beginning and 1.1 GB in the end (delta: -143.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 11.5 GB. [2018-11-18 10:06:23,359 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:06:23,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.40 ms. Allocated memory is still 1.0 GB. Free memory was 955.7 MB in the beginning and 945.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:06:23,360 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.60 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 939.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 10:06:23,361 INFO L168 Benchmark]: Boogie Preprocessor took 53.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 939.6 MB in the beginning and 1.1 GB in the end (delta: -203.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 10:06:23,361 INFO L168 Benchmark]: RCFGBuilder took 254.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-11-18 10:06:23,362 INFO L168 Benchmark]: TraceAbstraction took 327.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2018-11-18 10:06:23,362 INFO L168 Benchmark]: Witness Printer took 29.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:06:23,364 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 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.40 ms. Allocated memory is still 1.0 GB. Free memory was 955.7 MB in the beginning and 945.0 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 19.60 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 939.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 939.6 MB in the beginning and 1.1 GB in the end (delta: -203.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 254.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 327.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. * Witness Printer took 29.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L16] int* numbers; [L17] int array_size = __VERIFIER_nondet_int(); [L18] CALL bubbleSort(numbers, array_size) VAL [\old(array_size)=2, numbers={4:3}] [L4] int i, j, temp; [L5] i = (array_size - 1) VAL [\old(array_size)=2, array_size=2, i=1, numbers={4:3}, numbers={4:3}] [L5] COND TRUE i >= 0 [L6] j = 1 VAL [\old(array_size)=2, array_size=2, i=1, j=1, numbers={4:3}, numbers={4:3}] [L6] COND TRUE j <= i VAL [\old(array_size)=2, array_size=2, i=1, j=1, numbers={4:3}, numbers={4:3}] [L7] FCALL numbers[j-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 13 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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...