./Ultimate.py --spec ../../sv-benchmarks/c/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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/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_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/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 0.1.23-5842f4b [2018-11-18 16:20:39,573 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:20:39,574 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:20:39,580 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:20:39,580 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:20:39,581 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:20:39,581 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:20:39,582 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:20:39,583 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:20:39,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:20:39,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:20:39,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:20:39,586 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:20:39,586 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:20:39,587 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:20:39,588 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:20:39,588 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:20:39,590 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:20:39,591 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:20:39,592 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:20:39,593 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:20:39,593 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:20:39,595 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:20:39,595 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:20:39,595 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:20:39,596 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:20:39,596 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:20:39,597 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:20:39,598 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:20:39,598 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:20:39,598 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:20:39,599 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:20:39,599 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:20:39,599 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:20:39,599 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:20:39,600 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:20:39,600 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-11-18 16:20:39,609 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:20:39,609 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:20:39,609 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:20:39,610 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:20:39,610 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:20:39,610 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:20:39,610 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:20:39,610 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:20:39,610 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:20:39,610 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:20:39,611 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:20:39,611 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:20:39,611 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:20:39,611 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:20:39,612 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:20:39,612 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:20:39,612 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:20:39,612 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 16:20:39,612 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:20:39,612 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:20:39,612 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:20:39,613 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 16:20:39,613 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 16:20:39,613 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 16:20:39,613 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:20:39,613 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:20:39,613 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:20:39,613 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:20:39,614 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:20:39,614 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:20:39,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:20:39,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:20:39,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:20:39,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:20:39,614 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:20:39,614 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:20:39,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:20:39,615 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_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/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 [2018-11-18 16:20:39,638 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:20:39,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:20:39,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:20:39,650 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:20:39,650 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:20:39,651 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-11-18 16:20:39,687 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/bin-2019/utaipan/data/74309f047/893d5b8acc3c489e8ec044ec7ec57c94/FLAG563ae97fe [2018-11-18 16:20:40,089 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:20:40,090 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/sv-benchmarks/c/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-11-18 16:20:40,094 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/bin-2019/utaipan/data/74309f047/893d5b8acc3c489e8ec044ec7ec57c94/FLAG563ae97fe [2018-11-18 16:20:40,103 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/bin-2019/utaipan/data/74309f047/893d5b8acc3c489e8ec044ec7ec57c94 [2018-11-18 16:20:40,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:20:40,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:20:40,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:20:40,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:20:40,108 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:20:40,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:20:40" (1/1) ... [2018-11-18 16:20:40,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c0c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40, skipping insertion in model container [2018-11-18 16:20:40,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:20:40" (1/1) ... [2018-11-18 16:20:40,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:20:40,129 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:20:40,240 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:20:40,246 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:20:40,256 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:20:40,265 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:20:40,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40 WrapperNode [2018-11-18 16:20:40,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:20:40,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:20:40,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:20:40,266 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:20:40,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40" (1/1) ... [2018-11-18 16:20:40,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40" (1/1) ... [2018-11-18 16:20:40,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:20:40,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:20:40,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:20:40,280 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:20:40,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40" (1/1) ... [2018-11-18 16:20:40,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40" (1/1) ... [2018-11-18 16:20:40,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40" (1/1) ... [2018-11-18 16:20:40,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40" (1/1) ... [2018-11-18 16:20:40,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40" (1/1) ... [2018-11-18 16:20:40,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40" (1/1) ... [2018-11-18 16:20:40,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40" (1/1) ... [2018-11-18 16:20:40,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:20:40,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:20:40,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:20:40,296 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:20:40,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/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 16:20:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 16:20:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:20:40,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:20:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2018-11-18 16:20:40,371 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2018-11-18 16:20:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:20:40,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:20:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 16:20:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:20:40,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:20:40,540 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:20:40,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:20:40 BoogieIcfgContainer [2018-11-18 16:20:40,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:20:40,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:20:40,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:20:40,544 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:20:40,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:20:40" (1/3) ... [2018-11-18 16:20:40,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68870fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:20:40, skipping insertion in model container [2018-11-18 16:20:40,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:40" (2/3) ... [2018-11-18 16:20:40,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68870fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:20:40, skipping insertion in model container [2018-11-18 16:20:40,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:20:40" (3/3) ... [2018-11-18 16:20:40,547 INFO L112 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-11-18 16:20:40,555 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:20:40,563 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-11-18 16:20:40,574 INFO L257 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2018-11-18 16:20:40,593 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:20:40,593 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 16:20:40,594 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:20:40,594 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:20:40,594 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:20:40,594 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:20:40,594 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:20:40,594 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:20:40,607 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-18 16:20:40,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 16:20:40,614 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:20:40,614 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:20:40,616 INFO L423 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr3REQUIRES_VIOLATION, SelectionSortErr8REQUIRES_VIOLATION, SelectionSortErr7REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr11REQUIRES_VIOLATION, SelectionSortErr6REQUIRES_VIOLATION, SelectionSortErr5REQUIRES_VIOLATION, SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr10REQUIRES_VIOLATION, SelectionSortErr9REQUIRES_VIOLATION, SelectionSortErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-18 16:20:40,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:20:40,619 INFO L82 PathProgramCache]: Analyzing trace with hash 474885727, now seen corresponding path program 1 times [2018-11-18 16:20:40,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:20:40,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:20:40,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:20:40,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:20:40,656 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:20:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:20:40,713 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 16:20:40,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:20:40,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:20:40,715 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:20:40,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:20:40,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:20:40,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:20:40,728 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-18 16:20:40,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:20:40,739 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-11-18 16:20:40,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:20:40,740 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-18 16:20:40,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:20:40,745 INFO L225 Difference]: With dead ends: 42 [2018-11-18 16:20:40,745 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 16:20:40,747 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 16:20:40,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 16:20:40,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 16:20:40,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 16:20:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-11-18 16:20:40,768 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 12 [2018-11-18 16:20:40,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:20:40,769 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-11-18 16:20:40,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:20:40,769 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-11-18 16:20:40,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 16:20:40,769 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:20:40,769 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:20:40,770 INFO L423 AbstractCegarLoop]: === Iteration 2 === [SelectionSortErr3REQUIRES_VIOLATION, SelectionSortErr8REQUIRES_VIOLATION, SelectionSortErr7REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr11REQUIRES_VIOLATION, SelectionSortErr6REQUIRES_VIOLATION, SelectionSortErr5REQUIRES_VIOLATION, SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr10REQUIRES_VIOLATION, SelectionSortErr9REQUIRES_VIOLATION, SelectionSortErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-18 16:20:40,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:20:40,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1836535847, now seen corresponding path program 1 times [2018-11-18 16:20:40,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:20:40,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:20:40,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:20:40,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:20:40,774 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:20:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:20:40,812 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 16:20:40,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:20:40,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:20:40,813 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:20:40,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:20:40,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:20:40,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:20:40,814 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2018-11-18 16:20:40,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:20:40,848 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-11-18 16:20:40,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:20:40,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 16:20:40,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:20:40,849 INFO L225 Difference]: With dead ends: 37 [2018-11-18 16:20:40,849 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 16:20:40,850 INFO L604 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 [2018-11-18 16:20:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 16:20:40,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-18 16:20:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 16:20:40,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-11-18 16:20:40,854 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 13 [2018-11-18 16:20:40,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:20:40,854 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-11-18 16:20:40,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:20:40,854 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-11-18 16:20:40,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 16:20:40,854 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:20:40,855 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:20:40,855 INFO L423 AbstractCegarLoop]: === Iteration 3 === [SelectionSortErr3REQUIRES_VIOLATION, SelectionSortErr8REQUIRES_VIOLATION, SelectionSortErr7REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr11REQUIRES_VIOLATION, SelectionSortErr6REQUIRES_VIOLATION, SelectionSortErr5REQUIRES_VIOLATION, SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr10REQUIRES_VIOLATION, SelectionSortErr9REQUIRES_VIOLATION, SelectionSortErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-18 16:20:40,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:20:40,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1836535893, now seen corresponding path program 1 times [2018-11-18 16:20:40,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:20:40,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:20:40,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:20:40,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:20:40,856 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:20:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:20:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:20:40,881 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:20:40,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:20:40 BoogieIcfgContainer [2018-11-18 16:20:40,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:20:40,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:20:40,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:20:40,897 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:20:40,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:20:40" (3/4) ... [2018-11-18 16:20:40,899 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 16:20:40,924 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c1e7e6dc-5195-4d88-b2a6-851e337fcd29/bin-2019/utaipan/witness.graphml [2018-11-18 16:20:40,924 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:20:40,925 INFO L168 Benchmark]: Toolchain (without parser) took 819.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 959.3 MB in the beginning and 1.1 GB in the end (delta: -116.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:20:40,925 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:20:40,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.17 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:20:40,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.24 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:20:40,926 INFO L168 Benchmark]: Boogie Preprocessor took 15.38 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:20:40,926 INFO L168 Benchmark]: RCFGBuilder took 245.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -167.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:20:40,927 INFO L168 Benchmark]: TraceAbstraction took 355.05 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: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. [2018-11-18 16:20:40,927 INFO L168 Benchmark]: Witness Printer took 27.23 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:20:40,929 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 159.17 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 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 14.24 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.38 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 245.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -167.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 355.05 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: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. * Witness Printer took 27.23 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: 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] FCALL a[j] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 13 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 9 SDslu, 24 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...